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Energy optimisation is a cornerstone of a smart cement plant, as it helps in lowering costs and cutting carbon. ICR delves into the different aspects that make a cement plant more energy efficient, accountable and sustainable.

The cement industry is among the most energy-intensive sectors globally, representing a critical frontier for energy efficiency gains. According to the International Energy Agency, global cement production today consumes roughly 100 kWh of electricity per tonne of cement, alongside thermal energy intensity of about 3.6 GJ per tonne of clinker. This energy intensity must fall to below 90 kWh and 3.4 GJ respectively by 2030 to align with Net-Zero trajectories.
India’s cement sector already stands out as relatively energy efficient. According to the OECD, the national average thermal energy consumption hovers at 725 kcal per kg of clinker (˜3.04 GJ/t), and electrical energy usage averages about 80 kWh per tonne of cement, both notably lower than the global averages of approximately 934 kcal/kg clinker and 107 kWh/t cement.
Still, there’s significant room for improvement. The Confederation of Indian Industry’s latest benchmarking shows that while average electrical energy consumption in the Indian cement sector has fallen from 88 kWh/tonne in 2014 to 73.75 kWh/tonne in 2023, the best-performing plants have pushed that down even further—to about 56 kWh/tonne of cement, and 675 kcal/kg of clinker in thermal terms. These figures spotlight the potential—and the urgency—for the rest of the industry to accelerate its energy efficiency trajectory.

Need for Energy Efficiency
Global energy efficiency is rightly dubbed the ‘first fuel’ in the clean-energy transition. According to the International Energy Agency, enhancing energy efficiency is the single most cost-effective and fastest route to cut CO2 emissions while lowering operational costs and strengthening energy security. Efficiency gains alone could fulfil up to 40 per cent of the greenhouse-gas reductions needed to meet Paris Agreement goals, making them indispensable for sectors like cement that are poised for long-term infrastructure growth.
Speaking about the need for cement manufacturers to invest in energy efficiency solutions, MM Rathi, Joint President, Power Management, Shree Cement, says, “Because it directly reduces operating costs, ensures compliance with tightening regulations, and strengthens carbon credentials at a time when financing and markets reward low-carbon players. With mature technologies and strong incentives available, delaying only increases both cost and risk.”
Uma Suryam, SVP and Head Manufacturing – Northern Region, Nuvoco Vistas, explains, “We adopt a comprehensive approach to measure and benchmark energy performance across our plants. Key metrics include Specific Heat Consumption (kCal/kg of clinker) and Specific Power Consumption (kWh/tonne of cement), which are continuously tracked against Best Available Technology (BAT) benchmarks, industry peers and global standards such as the WBCSD-CSI and CII benchmarks.
To ensure consistency and drive improvements, we conduct regular internal energy audits, leverage real-time dashboards and implement robust KPI tracking systems. These tools enable us to compare performance across plants effectively, identify optimisation opportunities and set actionable targets for energy efficiency and sustainability.”
Alex Nazareth, Whole-time Director and CEO, Innomotics India, expounds, “In the cement industry, the primary high-power applications are fans and mills. Among these, fans have the greatest potential for energy savings. Examples, the pre-heater fan, bag house fan, and cooler fans. When there are variations in airflow or the need to maintain a constant pressure in a process, using a variable speed drive (VSD) system is a more effective option for starting and controlling these fans. This adaptive approach can lead to significant energy savings. For instance, vanes and dampers can remain open while the variable frequency drive and motor system manage airflow regulation efficiently.”
In cement manufacturing, energy footprint looms large: production of this indispensable material accounts for 7–8 per cent of global CO2 emissions due to energy-intensive processes and raw-material calcination. A recent report by Reuters confirms that over half of cement’s emissions stem from clinker production, highlighting how inefficient
thermal operations translate directly into climate and cost concerns. In this context, every percentage
point of energy saved not only cuts fuel and electricity costs but also contributes meaningfully to decarbonisation efforts.
With regards to innovations in energy efficiency, Dr Avijit Mondal, Deputy General Manager (DGM), NTPC Energy Technology Research Alliance (NETRA), NTPC, exemplifies, “Cement manufacturing is among the most energy-intensive industrial processes, with continuous high loads from kilns, grinding mills, crushers and conveyors. Integrating a hybrid behind-the-meter microgrid offers a powerful solution to improve energy efficiency, reduce power costs and enhance operational resilience. A typical integrated cement plant can deploy a hybrid system comprising 8-15 MWp of rooftop and ground-mounted solar PV, 8-25 MW of waste heat recovery (WHR) capacity, and a Battery Energy Storage System (BESS) sized for 15-30 minutes of peak plant load. In this configuration, solar PV supplies the daytime base load for processes like grinding and material transport, WHR delivers steady baseload power for kiln and cooler exhaust, and BESS handles ramping and flicker control.”

Barriers to Adoption
Rathi points out that the single biggest barrier is the high upfront capital cost and longer payback periods. According to a study published in PubMed Central, capital limitations are the third most significant barrier to sustainability transformation in the sector—particularly given the hefty investment and slow payback associated with energy projects such as waste-heat recovery systems (WHR) and captive power plants. The report highlights costs of approximately US$2.4 million per MW for WHR systems and US$1 million per MW for captive
power, making rapid returns challenging for many manufacturers.
Suryam shares, “Adopting energy-efficient technologies in brownfield cement plants presents a unique set of challenges due to the constraints of working within existing infrastructure. Another major challenge is minimising production disruptions during installation. Since brownfield plants are already operational, upgrades must be planned meticulously to avoid affecting output.”
Raman Bhatia, Founder and Managing Director, Servotech Renewable Power System, states, “Deploying large-scale solar solutions, comes with unique challenges that require careful planning and execution. One of the primary hurdles in such projects is the structural readiness of industrial rooftops, as they must be able to support the weight and scale of the installation while ensuring long-term safety and durability.”
Beyond financial constraints, there remains a glaring awareness and information gap across the industry. A 2017 report by the International Finance Corporation (IFC) identifies several non-financial barriers, including regulatory uncertainty, lack of project-level knowledge, limited access to sustainable energy financing and internal misalignment of priority between expansion projects and energy efficiency initiatives. Despite the strong long-term returns, energy-saving measures are often overshadowed due to lack of clarity, understanding or management focus within cement organisations.
Finally, the skills deficit stands is a major drag on energy efficiency deployment—not just in renewables but across industrial sectors including cement. According to Reuters, India’s clean energy ambitions are being undermined by an acute shortage of skilled professionals. In the solar industry alone, there’s a shortfall of around 1.2 million trained workers, a gap expected to grow by 2027. Without robust technical know-how—whether for installation, operations, digital monitoring or maintenance—cement plants struggle to implement and sustain efficiency technologies effectively.

Digital Transformation of Energy
Digital transformation is reshaping the cement industry, turning traditional analogue plants into data-driven operations. Internet of Things (IoT) and Industrial IoT (IIoT) systems are being deployed across operations to capture real-time data from kilns, mills, conveyors, and control systems. This information integrates into Energy Management Systems (EMS) that monitor consumption, optimise equipment use and quickly flag inefficiencies. Automation tools like VFDs, smart MCCs and sensors enable not just monitoring, but also proactive control of power-intensive assets—unlocking substantial energy savings through real-time adjustments.
Artificial Intelligence (AI) is adding another layer of sophistication. According to industry estimates, AI in cement manufacturing can reduce energy consumption by up to 15 per cent and cut electricity usage by approximately 28 per cent, thanks to real-time monitoring and feedback loops. Moreover, smart cement plant research indicates that AI implementation can lower overall energy use by 22.7 per cent, reduce downtime by 75 per cent and improve clinker consistency by nearly 12 per cent. These gains underline how machine learning and process-optimisation algorithms can deliver both cost and carbon dividends in one go.
Referring to energy-efficient technologies as vital, Rathi states, “They will lower operating costs, enable decarbonisation and accelerate the shift toward digital, circular and low-carbon manufacturing, making energy efficiency the backbone of competitiveness and sustainability.”
Beyond AI, the rise of digital twins and advanced modelling is giving plant managers unprecedented foresight. Simulated virtual replicas of cement lines let operators test energy-saving scenarios without risking real-world performance. According to a report by Ramco, predictive quality analytics and kiln-fuel blending driven by machine learning enable optimal resource utilisation, lowering both energy consumption and emissions. These systems are especially promising where alternative fuels or clinker substitutes are used—helping ensure consistency and efficiency in challenging process conditions.
Citing the example of modern mineral processing with digital technology, Karen Thompson, President, Haver & Boecker Niagara’s North American and Australian Operations, referred to Artificial intelligence (AI) as a practical tool that’s reshaping how quarries operate. “One of the most impactful applications is in predictive analytics. Unplanned downtime not only disrupts production but also leads to increased energy use, emergency repairs and premature equipment disposal — all of which have environmental consequences. Predictive maintenance technologies help mitigate these risks. Tools like condition monitoring and vibration analysis use wireless sensors to continuously assess equipment health,” she states.
Smart energy management tools powered by IIoT are bridging operations, maintenance, and strategic dashboards. ABB’s Ability™ Knowledge Manager, for instance, allows integration of production, downtime, quality, energy, and emissions data into a unified platform—and deliver insights even via mobile access. A leading Indian cement producer implemented the suite across multiple plants, achieving ROI in just eight months, cutting costs by 3-5 per cent and extending asset lifecycles—demonstrating how digital tools are central to modernising
energy management.

The Green Route
In an industry where energy constitutes up to 40 per cent of production costs, unlocking free sources of power can be a game-changer. Waste Heat Recovery Systems (WHRS) tap into high-temperature exhaust—like kiln preheater gases—and convert up to 30 per cent of a plant’s electricity needs into usable power, using steam turbines or Rankine cycles. A report by the Ministry of New and Renewable Energy mentions that the Indian cement sector possesses a WHRS potential of nearly 1.3 GW, which could annually reduce coal use by approximately 8.6 million tonnes and cut 12.8 million tonnes of CO2 emissions.
Commenting about viable renewable energy solutions, Ghosh says, “Cement industry is a continuous process industry with high power intensity. It requires green, reliable and cost-effective power solutions. Historically, cement plants have preferred the group captive model given the scale of power requirement. From a green power solutions perspective, round-the-clock solutions with a mix of solar, wind and battery storage (or PSP storage) are best suited to meet the power needs of the cement industry. With reduction in battery CAPEX and further learning curves, we see the cost effectiveness of RTC solutions continues to improve in the near term. An important element to make this competitive is to size the configuration based on very granular analytics, such as optimisation of the battery cycling rate through the life of the plant.”
“Most energy efficiency measures are also value accretive. In fact, if you were to draw the marginal abatement cost curve – you will find that >50 per cent of measures to reduce carbon footprint also being in cost reduction, which is a win-win. This is true not just for cement plant operations but across the value chain including logistics. For example, reducing the per tonne per kilometre (PTPK) costs also help in significant carbon footprint reduction which can be achieved by improving packing efficiencies, route optimisation, etc. Hence, energy efficiency helps improve the cost competitiveness in heavy industries and is not contrarian in nature,” he added.
Narrowing down on solar energy, Bhatia shares, “Our patented peak-shaving technology is designed to optimise energy usage efficiency by reducing costly demand spikes that are common in energy-intensive operations. In industries like cement manufacturing, where power consumption can suddenly surge due to heavy machinery, these peaks often translate into higher demand charges on electricity bills. By intelligently managing when and how energy is drawn from the grid and dispatching battery energy storage (BESS) during peak grid usage, we ensure smoother load profiles, lower costs and mitigate tariff exposure.”
Despite its promise, WHRS adoption isn’t universal. A report by ICRA indicates that Indian cement producers plan to invest around Rs.1,400–1,700 crore by FY2022 to add 175 MW of WHRS capacity, which brings the cumulative installed base to 520 MW—covering only about 16 per cent of their power needs. However, the low marginal power cost from WHRS—at just around Rs.1-1.5 per kWh compared to Rs.4.5–5 for captive thermal power—delivers an estimated 14-18 per cent reduction in power expenses, boosting operating margins by 1.1-1.4 percentage points.
Parallel to WHRS, alternative fuels and raw materials are creating dual efficiencies by cutting both energy demand and raw-material inputs. According to CMA, India’s sector-wide Thermal Substitution Rate (TSR) has grown from 0.6 per cent in 2010 to 4 per cent in 2017, with some plants achieving TSR levels of 25-35 per cent using Refuse-Derived Fuel (RDF), agro-waste, sludge and other residues. These co-processing strategies lower dependence on fossil fuels and reduce environmental impacts — moving both raw materials and energy into a more circular usage cycle.
Looking ahead, the synergy between efficiency gains and circular economy gains positions cement firms for long-term competitiveness. WHRS delivers an immediate reduction in operational cost and carbon footprint, while alternative fuel and raw-material integration opens pathways for regulatory resilience, lower input costs and brand differentiation in a sustainability-conscious market. Yet realising their full potential requires overcoming technical challenges, scaling effective logistics and embracing policy frameworks that support both waste valorisation and energy innovation.

Energy Audits
Energy audits serve as foundational tools in the pursuit of operational efficiency within the cement sector, spotlighting precisely where energy is being wasted and where savings can be unlocked. A detailed study by the National Council for Cement and Building Materials (NCB) revealed that kilns are sometimes operated with heat consumption as high as 850 kcal/kg clinker, whereas the industry’s best-performing plants function around 675-685 kcal/kg clinker. Energy audits helped bridge this gap by pinpointing inefficiencies like cooler losses and false air entry—in one case, a reduction of just five kcal/kg clinker yielded annual cost savings of approximately Rs.45-50 lakh for a 1 Mtpa plant. A report by NCB underscores this: energy audits can deliver substantial returns by diagnosing hidden inefficiencies and guiding corrective actions.
Complementing audits, benchmarking empowers cement producers to realistically gauge their energy performance against industry leaders. According to the latest CII benchmarking manual, while
average electrical consumption stands at 73.75 kWh/MT cement, the top 10 plants operate at an impressively efficient 56.14 kWh/MT. Similarly, thermal benchmarks show a gap—from the sector average of 726 kcal/kg clinker to best-in-class levels around 675 kcal/kg. These metrics allow companies to set ambitious yet achievable targets, fostering continuous improvement and motivating strategic investments in efficiency technologies.
Data plays a crucial role in this process.
Debabrata Ghosh, Head of India, Aurora Energy Research, states, “Advanced analytics has several use cases to enhance cement plant performance in improving quality, increasing throughput and reducing cost thereby improving margins/ realisations. Use cases differ by part of the process. Availability of granular and high-quality data captured real time through effective information systems is the primary requisite. Typically, use cases with low effort and high impact should be prioritised to capture low hanging fruits. Structural, big-ticket solutions typically bring about medium term impact on either/ all the three metrics.”

Skill Development for Efficiency
India’s hammering of energy efficiency in manufacturing hinges critically on skilled manpower—a resource that remains alarmingly sparse. According to a Reuters report titled ‘Skills shortage hobbles India’s clean energy aspirations,’ the renewable sector faces a skill gap of approximately 1.2 million workers, projected to rise to 1.7 million by 2027, severely impacting deployment and operational effectiveness of technologies like solar, wind and energy-efficient systems. As clean-energy integration grows, this shortage threatens to stall progress across sectors—including cement—where specialised knowledge in automation, digital monitoring and system optimisation is increasingly indispensable.
Within the cement industry itself, the urgency for upskilling is clear. A recent industry snapshot by ZIPDO Education reveals that 48 per cent of workers feel unprepared for the digital transformation of their plants, while 53 per cent lack basic digital literacy, and 58 per cent report shortages in AI and data analytics skills. However, the same report also signals momentum: 72 per cent of cement firms anticipate expanding digital training programs by 2025, and 80 per cent deem reskilling essential to meet sustainability goals. These figures underscore both the magnitude of the gap and the growing recognition that skill development is no longer optional—but foundational to staying energy-competitive.

OEMs, EPCs and Cement Producers Collaboration
Strategic collaboration between Original Equipment Manufacturers (OEMs), Engineering-Procurement-Construction (EPC) firms and cement producers is proving to be a game-changer in operational efficiency. For instance, a case highlighted in Indian Cement Review recounts how JK Cement’s switch to Mobil SHC™ 632 premium lubricants—not just designed but optimised in coordination with OEM partners—enhanced gearbox efficiency by about 0.8 per cent, saved 263 litres of oil, and delivered cost savings of US$18,764 (Rs.13.1 lakh) annually. This partnership model underscores how nuanced inputs from technical suppliers, paired with operational insights from plant engineers, can translate directly into energy and cost gains.
Similarly, EPC collaborations are demonstrating real traction in energy optimisation. At a leading cement producer’s site in Rajasthan, EPC partner Thermax implemented a blend of operational and capital interventions—like Variable Frequency Drives (VFDs) and auto-control flow logics—for both captive power and WHRS. The results were tangible: cost savings of Rs.7.24 million from capex and Rs.1.88 million from opex in the captive plant, plus Rs.870,000 and Rs.190,000 respectively in the WHR facility. This affirms how EPC-led evaluation and targeted upgrades can yield substantial efficiency returns.

Long Term ROI
In the long run, energy-efficient systems are not merely cost-saving tools—they are strategic investments with powerful paybacks. According to an ICRA report, Indian cement companies planned to deploy 175 MW of Waste Heat Recovery Systems (WHRS) by FY 2021–22, involving a total investment of Rs.1,400–1,700 crore. This investment is expected to widen operating margins by 1.10-1.40 per cent, as WHRS-powered electricity costs just Rs.1.3-Rs.1.5 per kWh, compared to Rs.4.5-Rs.5 per kWh for conventional captive thermal power. Furthermore, Global Cement’s market analysis reveals that WHRS-generated power typically comes in at just US$0.02/kWh, significantly lower than the ~US$0.70/kWh from coal-based captive plants, which allows for around 15 per cent savings in power costs when covering 25 per cent of capacity.
Beyond direct savings, integrating energy-efficient technologies like WHRS or advanced refractories contributes materially to carbon footprint reduction, bolstering ESG performance and potentially unlocking regulatory or market advantages. A detailed case study published by Indian Cement Review in 2024 notes that upgrading kiln burning zones with high-insulation refractories can reduce fuel consumption by 6 per cent, translating into annual savings of roughly `3.5 crore for a 6,000 TPD kiln. The switch also results in an estimated 0.1 tonne of CO2 reduction per tonne of clinker, highlighting how operational efficiencies can create both cost and carbon dividends.

Conclusion
Energy efficiency in cement manufacturing is no longer just a choice—it is an imperative for competitiveness, compliance, and climate responsibility. From waste heat recovery systems to digital transformation and advanced refractories, the sector has already demonstrated that operational savings and carbon reductions can go hand in hand. According to ICRA, WHRS investments alone can expand operating margins by 1.10-1.40 per cent for Indian cement players, showing that the financial case for efficiency is robust. These tangible benefits are proving that efficiency measures are not incremental improvements but transformative enablers for long-term resilience.
At the same time, the industry must overcome barriers such as high upfront costs, limited awareness and skill gaps. Energy audits, benchmarking practices and collaborations between OEMs, EPC contractors and cement producers are emerging as essential tools to bridge these gaps. As noted in multiple case studies, even relatively modest upgrades—such as switching to high-performance refractories—can yield significant savings in fuel costs and emissions reductions. These wins create a strong foundation upon which deeper decarbonisation strategies can be built.
Looking ahead, the integration of emerging technologies—AI, IoT and smart energy management—will further optimise cement operations. Combined with alternative fuels, raw materials and large-scale carbon capture, these innovations are positioning the industry to drastically lower its energy intensity and carbon footprint. The pace of adoption will determine how quickly the sector transitions from incremental efficiency gains to systemic decarbonisation. With India expected to double its cement demand by 2030, scaling these solutions is both a necessity and an opportunity.
The future of cement lies in aligning energy efficiency with the global net-zero agenda. By 2050, achieving net-zero cement production will require a mix of aggressive efficiency measures, deep electrification, large-scale use of alternative fuels and breakthrough technologies such as CCUS. The journey is complex, but the direction is clear: energy efficiency is not only the first step but also the cornerstone of a sustainable cement industry. Those who act decisively today will not only cut costs and carbon but also secure their place as leaders in a net-zero future.– Kanika Mathur

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Indian Railways Plans Green Fly Ash Transport Network

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Specialised rail logistics will move fly ash from power plants to infrastructure industries.

New Delhi

Indian Railways is planning a large-scale green logistics initiative to transport fly ash from thermal power plants to industries where it can be reused in infrastructure and construction activities.

The initiative was discussed during a review meeting chaired by Union Minister for Railways Ashwini Vaishnaw. Union Ministers of State for Railways V Somanna and Ravneet Singh Bittu were also present.

India generates nearly 340 million tonnes of fly ash every year from thermal power plants. The proposed initiative aims to create an efficient rail-based transport system using specialised containers and dedicated logistics arrangements to move fly ash safely from power plants to end-use industries.

Fly ash is widely used in road construction, cement manufacturing, brick production, concrete, blocks and boards. By improving its movement through the railway network, the initiative is expected to support better utilisation of this industrial by-product while reducing environmental concerns linked to storage and disposal.

The move also aligns with India’s circular economy goals by converting waste from thermal power generation into a useful raw material for the construction and infrastructure sectors. Wider availability of fly ash can help reduce material costs in areas such as bricks and cement, supporting more affordable infrastructure and housing development.

Through this initiative, Indian Railways aims to provide a cleaner, safer and more organised transport solution for fly ash, turning an environmental challenge into an infrastructure resource.

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Powering Cement Through Intelligent Motion

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Gears, drives, and motors have evolved from essential mechanical components into strategic enablers of reliability, efficiency, and sustainability in modern cement plants. ICR explores how advanced motion technologies, predictive maintenance, digitalisation, and intelligent drive systems are helping cement manufacturers reduce downtime, optimise energy use, and build future-ready operations.

As the Indian cement industry prepares for another phase of capacity expansion, the focus is shifting from merely increasing production volumes to improving operational efficiency, reliability, and sustainability. According to industry estimates, India is expected to add nearly 160–170 million tonnes of cement capacity between FY26 and FY28, driven by infrastructure investments, urbanisation, and housing demand. In this environment, gears, drives, and motors have emerged as critical enablers of productivity, forming the backbone of every major process from raw material extraction and grinding to clinker production and cement dispatch.
Motors alone account for nearly 60 per cent to 70 per cent of industrial electricity consumption globally, according to the International Energy Agency (IEA), while rotating equipment failures remain among the leading causes of unplanned downtime across heavy industries. In cement plants, where equipment operates under high loads, extreme dust conditions, elevated temperatures, and continuous-duty cycles, the performance of gears, drives, and motors directly influences energy consumption, maintenance costs, plant availability, and overall profitability. As digitalisation and Industry
4.0 technologies gain momentum, these systems are evolving from passive mechanical components into intelligent assets capable of delivering real-time operational insights.

Why gears, drives, and motors are the backbone of cement plant operations
Every major process in a cement plant depends on the seamless operation of gears, drives, and motors. Raw mills, vertical roller mills, crushers, kiln drives, conveyor systems, fans, and clinker coolers all rely on rotating equipment to maintain continuous production. A failure in any one of these systems can disrupt entire process chains, highlighting their strategic importance.
Modern cement plants process thousands of tonnes of material daily, requiring equipment capable of transmitting enormous torque while maintaining precision and reliability. Kiln drives and grinding systems, in particular, operate under some of the highest mechanical loads found in industrial manufacturing. The ability of gears and motors to withstand these conditions directly impacts plant throughput and production stability.
Satish Maheshwari, Chief Manufacturing Officer, Shree Cement says, “Effective lubrication management remains one of the most critical factors in extending the lifespan of cement plant drive systems. Proper lubrication, supported by regular oil analysis, vibration diagnostics, and condition monitoring, helps minimise wear, prevent unexpected failures, and maintain the integrity of critical components such as gearboxes, motors, and drive assemblies. By identifying potential issues at an early stage, plants can move from reactive maintenance to a more proactive and reliability-focused approach.”
“Smart motors, intelligent drives, and next-generation gearboxes are set to redefine cement plant maintenance and performance. Equipped with embedded sensors, IoT connectivity, digital twins, and AI-driven diagnostics, these technologies enable real-time condition monitoring, predictive maintenance, and seamless digital integration. As the industry embraces Industry 4.0, smart drive systems will play a pivotal role in improving energy efficiency, reducing downtime, and optimising asset performance across the cement manufacturing value chain” he adds.
Industry studies suggest that rotating equipment accounts for a significant proportion of maintenance expenditure in process industries. Effective design, selection, and maintenance of gears, drives, and motors therefore have a direct influence on asset utilisation, operational efficiency, and total cost of ownership.

The cost of downtime: reliability challenges in rotating equipment
Unplanned downtime remains one of the most expensive challenges facing cement manufacturers. Industry estimates indicate that a major failure involving a critical gearbox, kiln drive, or grinding mill can result in production losses running into lakhs of rupees per hour, depending on plant capacity and operating conditions.
Sanjeev Arora, President – Motion Business & IEC LV Motors Division, ABB India says, “One of the most significant shifts taking place in industrial decision-making today is moving away from evaluating equipment based solely on upfront capital cost toward understanding total cost of ownership (TCO). In a typical motor system, the purchase price often represents only a small fraction of the total lifecycle cost however energy consumption, maintenance requirements, downtime and operating efficiency account for the vast majority of long-term operational expenses. For cement manufacturers operating in highly competitive markets, this distinction is critical.”
“A high efficiency motor paired with an appropriately configured variable speed drive may require a higher initial investment, but the long-term benefits are substantial. Reduced electricity consumption, lower maintenance needs, longer service intervals and improved process stability can deliver faster payback and stronger profitability over time” he adds.
Cement plants present a particularly challenging environment for rotating equipment. Dust ingress, thermal fluctuations, shock loads, vibration, shaft misalignment, and lubrication contamination contribute significantly to equipment degradation. Studies by SKF indicate that nearly 50 per cent of bearing failures are linked to lubrication issues and contamination, while improper alignment and vibration-related problems remain leading causes of gearbox and motor failures.

Energy-efficient motors and drives: unlocking operational savings
Energy is one of the largest operating expenses for cement manufacturers, often accounting for 25 per cent to 35 per cent of total production costs. Grinding operations alone can consume nearly 60 per cent to 70 per cent of a plant’s electrical energy, making energy-efficient motors and drives a strategic investment.
According to the International Energy Agency, high-efficiency motors combined with Variable Frequency Drives (VFDs) can reduce energy consumption by 20 per cent to 30 per cent in suitable applications. By matching motor speed and torque to actual process requirements, VFDs minimise unnecessary power consumption while reducing mechanical stress on equipment, improving both efficiency and reliability.

Advances in gearbox design and power transmission technologies
Modern gearbox technology has evolved significantly in response to the increasing demands of cement manufacturing. Advanced materials, case-hardened gears, optimised tooth profiles, improved surface finishing, and enhanced lubrication systems are helping reduce friction, wear, and thermal loading.
Girish Hanchate, Director – Industrial Market, India SKF India (Industrial) says, “Smart diagnostics are significantly improving the lifecycle of gears, motors, and other rotating equipment by enabling a shift from reactive maintenance to condition-based asset management. Hidden issues such as vibration anomalies, bearing defects, misalignment, and temperature fluctuations can quietly reduce plant throughput by 10 per cent to 20 per cent while increasing energy consumption long before a breakdown occurs. By leveraging advanced sensors, predictive analytics, machine learning, and real-time monitoring of vibration, temperature, and motor current, cement manufacturers can detect developing faults early, optimise maintenance schedules, and prevent costly secondary damage. This not only improves reliability but also supports energy efficiency and sustainability objectives.”
“The next major evolution in drive and bearing technology lies in the development of fully integrated smart mechanical ecosystems that combine high-performance bearings, advanced lubrication management, and digital intelligence. Sensor-enabled condition monitoring embedded directly within bearings and drive systems allows operators to capture critical operational data at the source, enabling predictive maintenance and real-time performance optimisation. Innovations such as SKF’s VA9A1 Spherical Roller Bearing series, engineered specifically for demanding cement applications such as crushers and kilns, demonstrate this trend. By increasing internal bearing space and optimising lubricant flow, these designs improve grease retention, reduce wear, minimise downtime, and create more resilient, energy-efficient rotating equipment systems for the future of cement manufacturing” he adds.
Manufacturers are increasingly focusing on compact, high-torque gearbox designs capable of delivering higher power density while maintaining service life. Innovations such as condition-monitored gear systems, improved sealing technologies, and modular gearbox architectures are simplifying maintenance while enhancing operational reliability.

Predictive maintenance, condition monitoring, and asset health management
The shift from reactive to predictive maintenance is transforming asset management across the cement industry. Technologies such as vibration monitoring, thermography, oil analysis, ultrasound testing, and motor current signature analysis are enabling operators to identify potential failures before they occur.
Research by Deloitte suggests that predictive maintenance can reduce breakdowns by up to 70 per cent and lower maintenance costs by 25 per cent. In cement plants, where shutdown windows are limited and equipment operates continuously, predictive maintenance offers a powerful tool for improving reliability and extending asset life.
Digitalisation, industry 4.0, and the rise of intelligent drive systems
Industry 4.0 technologies are redefining the role of gears, drives, and motors. Smart sensors embedded within motors, bearings, and gear systems can continuously monitor temperature, vibration, load, lubrication condition, and energy consumption.
Girish Hanchate says, “As the industry embraces automation, sustainability, and digital transformation, the importance of intelligent motion technologies will continue to grow. The convergence of advanced engineering, predictive maintenance, and Industry 4.0 solutions is creating a new generation of cement plants where reliability, efficiency, and sustainability work together to deliver long-term value. For cement manufacturers navigating increasing production demands and environmental expectations, investing in smarter gears, drives, and motors is no longer optional—it is a business imperative.”
Cloud-based monitoring platforms and Industrial Internet of Things (IIoT) architectures enable maintenance teams to access equipment health data remotely, improving visibility across geographically dispersed operations. Advanced analytics and
artificial intelligence are further enhancing fault detection capabilities, enabling more accurate maintenance planning.
The emergence of digital twins represents another significant development. By creating virtual replicas of physical assets, operators can simulate operating conditions, predict failures, optimise maintenance schedules, and improve lifecycle management decisions. These technologies are helping transform rotating equipment into intelligent assets that actively contribute to operational decision-making.

Building future-ready cement plants through smart motion technologies
The future of cement manufacturing will depend heavily on the ability to integrate mechanical reliability with digital intelligence. Smart motion technologies combine high-efficiency motors,
intelligent drives, condition monitoring systems, and automation platforms to create more responsive and efficient operations.
Sustainability goals are also accelerating investment in advanced motion technologies. Reduced energy consumption, improved equipment efficiency, and extended asset life contribute directly to lower carbon emissions and reduced resource consumption.
These benefits align closely with the industry’s decarbonisation objectives.
As capacity expansions continue across India, future-ready cement plants will increasingly prioritise reliability, flexibility, and data-driven decision-making. Organisations that successfully integrate smart motion technologies into their operations will be better positioned to reduce costs, improve productivity, and maintain a competitive advantage in a rapidly evolving market.

Conclusion
Gears, drives, and motors are no longer viewed solely as mechanical components; they have become strategic assets that influence every aspect of cement plant performance. Their reliability affects production continuity, their efficiency impacts operating costs, and their digital capabilities increasingly shape maintenance and operational strategies.

  • Kanika Mathur

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Liquid Intelligence

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Lubrication has evolved from a routine maintenance activity into a critical driver of reliability, energy efficiency, and sustainability in cement manufacturing. ICR explores how advanced lubricants, predictive maintenance, and Total Lubrication Management are helping cement plants reduce downtime, optimise performance, and achieve long-term operational excellence.

In the cement industry, discussions around operational excellence often focus on kiln efficiency, alternative fuels, digitalisation, and process optimisation. Yet one of the most influential factors affecting equipment reliability, energy consumption, maintenance costs, and sustainability often receives far less strategic attention: lubrication. From vertical roller mills and kiln drives to crushers, conveyors, clinker coolers, and large industrial gearboxes, every critical asset depends on effective lubrication to minimise friction, reduce wear, and ensure uninterrupted operation.
The importance of lubrication extends far beyond routine maintenance. According to tribology research, nearly 23 per cent of global energy consumption is associated with overcoming friction and replacing worn components. Researchers have estimated that implementing advanced tribological practices could reduce global energy consumption by as much as 8.7 per cent in the long term. For cement manufacturers operating in highly demanding environments characterised by abrasive dust, heavy loads, high temperatures, vibration, and continuous operations exceeding 8,000 hours annually, lubrication has evolved from a maintenance function into a strategic lever for reliability, sustainability, and profitability.
The significance of this opportunity becomes even clearer when viewed against the backdrop of the cement industry’s environmental challenges. According to the International Energy Agency (IEA), cement manufacturing accounts for approximately 7–8 per cent of global CO2 emissions and consumes nearly 5 per cent of industrial energy worldwide. While much attention is rightly directed toward alternative fuels, clinker factor reduction, and carbon capture technologies, maintenance practices such as lubrication remain one of the most practical and immediately deployable avenues for improving efficiency and reducing emissions.

Why lubrication is critical to cement plant reliability
Cement manufacturing relies on some of the most heavily loaded rotating equipment found in industrial production. Kiln support rollers, girth gears, vertical roller mills, crushers, conveyors, ID fans, and large gearboxes operate under extreme conditions where temperatures, loads, and contamination levels routinely challenge equipment integrity. Under such circumstances, lubricants serve not merely as friction-reducing agents but as essential protective barriers that prevent metal-to-metal contact, dissipate heat, minimise wear, and extend component life.
A modern integrated cement plant may contain thousands of lubrication points distributed across critical and auxiliary equipment. Even a minor lubrication-related issue can escalate rapidly when equipment operates continuously around the clock. Unlike batch manufacturing operations, cement plants often have limited opportunities for shutdowns, making asset reliability a key business priority. Effective lubrication directly contributes to machine availability, process stability, and production continuity.
Industry studies consistently demonstrate the relationship between lubrication and reliability. Research published by SKF indicates that approximately 36 per cent of premature bearing failures are caused by poor lubrication practices, while bearing damage accounts for nearly 50 per cent of rotating equipment failures globally. Similarly, studies by Machinery Lubrication have found that improper lubrication contributes to roughly 43 per cent of mechanical failures and more than half of bearing-related breakdowns. These statistics highlight a critical reality: lubrication is not simply a maintenance task but a reliability strategy.
The consequences of lubricant failure extend well beyond replacement parts. A failed bearing in a vertical roller mill, kiln drive, or critical conveyor system can trigger extended downtime, emergency maintenance costs, production losses, and supply chain disruptions. In large integrated cement plants, even a few hours of unplanned downtime can result in significant financial losses, making lubrication one of the most cost-effective reliability investments available.

Hidden cost of poor lubrication management
Many organisations continue to treat lubrication as a consumable expense rather than a strategic asset management function. This mindset often results in inconsistent lubrication schedules, incorrect lubricant selection, contamination issues, over-lubrication, under-lubrication, and inadequate monitoring practices. The resulting impact is often far greater than the actual cost of the lubricant itself.
Professor Procyon Mukhejee says “Lubricant purchasing often followed a conventional sourcing model: negotiate annual contracts, standardise product grades and optimise price. That logic is still relevant but no longer sufficient. In a cement plant, a lower-cost lubricant that reduces purchase spend may increase oil replacement frequency, raise wear rates or contribute to avoidable downtime. That trade-off is forcing procurement teams to think differently.”
According to industry research, up to 70 per cent of mechanical failures can be linked to contamination, improper lubricant selection, or inadequate lubrication practices. Noria Corporation estimates that world-class lubrication programmes can reduce maintenance costs by 20–40 per cent and extend equipment life by as much as 50 per cent. Conversely, reactive lubrication practices increase spare-part consumption, raise labour requirements, accelerate equipment wear, and elevate operational risk.
The hidden costs are particularly severe in cement plants because contaminants such as dust, moisture, and wear particles are ever-present. Even microscopic contaminants can damage bearing surfaces and gear teeth, leading to premature failure. Poor lubrication management also increases energy consumption because higher friction levels require greater power input to maintain production rates. As a result, the true cost of poor lubrication extends far beyond maintenance budgets and directly impacts overall plant profitability.

Lubricants and energy efficiency
Energy represents one of the largest operating expenses in cement manufacturing. Grinding operations alone account for approximately 60–70 per cent of total electrical energy consumption within a typical cement plant. Consequently, any improvement in equipment efficiency can generate substantial cost savings over time.
Lubricants contribute directly to energy efficiency by reducing friction between moving surfaces. Lower friction means less resistance, lower operating temperatures, and reduced power requirements. Advanced lubricant formulations are specifically designed to optimise film strength while minimising energy losses across gears, bearings, and hydraulic systems.
Dr SB Hegde, Global Cement Industry Expert says, “One of the most overlooked aspects of lubrication in cement plant operations is effective contamination control combined with disciplined greasing practices. Cement dust, which is often harder than bearing steel, can mix with lubricants and create an abrasive grinding paste that accelerates wear and is responsible for a significant share of bearing failures. Despite this, many plants still rely on manual, time-based greasing and outdated sealing systems, resulting in higher energy consumption, premature component wear, and frequent unplanned shutdowns. Automatic lubrication systems, coupled with robust dust exclusion measures, remain one of the most underutilised yet effective reliability solutions in the industry.”
“Smart lubrication practices can have a direct and measurable impact on both profitability and sustainability. The use of high-performance synthetic lubricants, combined with predictive oil condition monitoring, can typically deliver energy savings of 3–4 per cent, translating into substantial annual cost reductions for cement manufacturers. In one notable case, a large cement producer implemented wireless condition monitoring alongside advanced lubrication practices on critical assets and achieved a 57-times return on investment within six months. The initiative generated savings exceeding `8.4 crore and prevented a major bearing failure that could have caused more than 160 hours of downtime, highlighting the significant financial value of proactive lubrication management” he adds.
Research by ExxonMobil and other lubricant manufacturers has demonstrated that synthetic lubricants can reduce energy consumption in industrial gear systems by 2–6 per cent under appropriate operating conditions. While these savings may appear modest on an individual machine basis, the cumulative impact across multiple mills, fans, conveyors, and drive systems can be considerable. For large cement manufacturers operating energy-intensive facilities, even a 2 per cent reduction in power consumption can translate into significant annual cost savings.
Furthermore, reduced friction contributes to improved equipment performance and lower heat generation, enabling machinery to operate more consistently under demanding conditions. In an industry where energy efficiency and carbon reduction targets are becoming increasingly important, lubrication represents a practical pathway for achieving measurable improvements.

Advances in synthetic and high-performance lubricants
The lubricant industry has undergone significant transformation over the past decade. Traditional mineral oils are increasingly being supplemented or replaced by synthetic and semi-synthetic formulations engineered specifically for demanding industrial applications.
Modern synthetic lubricants provide superior oxidation resistance, thermal stability, viscosity retention, load-carrying capacity, and wear protection compared to conventional products. These characteristics are particularly valuable in cement applications where equipment is exposed to extreme temperatures, heavy loads, and continuous operation.
Many premium synthetic lubricants now deliver service lives two to five times longer than traditional mineral oils. This not only reduces lubricant consumption but also minimises maintenance interventions and associated downtime. For cement manufacturers, extended oil drain intervals can significantly improve equipment availability and reduce lifecycle costs.
Synthetic gear oils have gained widespread acceptance in applications such as kiln drives, vertical roller mills, and high-load gearboxes. Field studies have reported gearbox temperature reductions of up to 10°C following conversion from conventional lubricants to advanced synthetic alternatives. Lower operating temperatures contribute directly to improved component life, reduced oxidation, and enhanced overall reliability.

Predictive maintenance, oil analysis, and condition monitoring
The emergence of predictive maintenance has transformed lubrication from a reactive maintenance activity into a proactive asset management discipline. Rather than relying solely on time-based maintenance schedules, cement plants increasingly use oil analysis and condition monitoring technologies to assess equipment health continuously.
Oil analysis provides a wealth of information about both lubricant condition and machine health. Parameters such as viscosity, oxidation, contamination levels, moisture content, additive depletion, and wear particle concentrations can reveal developing problems long before equipment failure occurs. In many cases, lubrication-related abnormalities represent the earliest warning signs of impending mechanical issues.
Gaurav K Mathur says “Dust contamination remains the single biggest lubrication-related challenge affecting cement plant productivity today. Airborne silica and clinker dust penetrate bearings, gear housings, and lubrication systems, transforming lubricants from protective agents into abrasive mediums. These contaminants are often as hard as bearing steel and create a three-body abrasion mechanism that rapidly accelerates wear, especially under the high temperatures, shock loads, vibration, and continuous-duty operating conditions typical of cement plants. Poor sealing systems can increase wear rates by three to five times, leading to premature failures, rising maintenance costs, and reduced equipment life. Compounding the issue is a growing industry-wide shortage of experienced lubrication professionals, resulting in a loss of critical maintenance expertise and an increasing reliance on reactive rather than predictive maintenance.”
Reliability experts frequently describe oil analysis as a “blood test” for machinery because it provides valuable insights into internal equipment conditions without requiring disassembly. Studies suggest that every dollar invested in predictive maintenance can generate returns of five to ten dollars through avoided failures and reduced downtime.
Leading cement producers increasingly combine oil analysis with vibration monitoring, thermography, ultrasonic inspection, and digital condition monitoring platforms. This integrated approach enables maintenance teams to move from reactive maintenance to predictive asset management, reducing downtime while improving equipment lifespan and operational reliability.

Total lubrication management: a strategic approach to asset health
As reliability expectations continue to increase, many cement manufacturers are adopting Total Lubrication Management (TLM) programmes.
TLM extends beyond lubricant selection and incorporates every aspect of lubrication management, including storage, handling, contamination control, application methods, oil analysis, training, and continuous improvement.
Gaurav K Mathur, Director & Chief Executive, Global Technical Services says, “Smarter lubrication practices can significantly reduce both energy consumption and maintenance expenditure. The implementation of Total Lubrication Management (TLM), supported by careful lubricant selection, customised lubrication strategies, and robust contamination control, helps reduce friction across critical equipment and improve operational efficiency by up to 3 per cent. In energy-intensive cement plants, even marginal efficiency gains can translate into substantial cost savings. Improved lubrication practices also reduce wear, minimise overheating, extend equipment life, and lower the frequency of maintenance interventions, directly contributing to higher plant availability and lower total operating costs.”
“The most impactful innovation for the cement sector will not be a single lubricant product but the widespread adoption of Total Lubrication Management as a structured reliability framework. TLM integrates contamination control, oil analysis, condition-based maintenance, online filtration, lubricant regeneration, digital tracking, and condition monitoring into a unified system. This approach transforms lubrication from a routine maintenance activity into a strategic asset management function. The result is improved equipment reliability, reduced lubricant consumption, lower waste generation, enhanced energy efficiency, and a smaller carbon footprint. In an industry characterised by harsh operating environments and growing sustainability expectations, TLM offers a practical pathway to achieving higher reliability, improved profitability, and long-term operational sustainability” he adds.
One of the primary objectives of TLM is contamination control. Dust, moisture, and wear particles are widely recognised as the leading causes of lubricant degradation and equipment failure. Given the inherently dusty environment of cement plants, effective contamination control becomes essential for maintaining lubricant quality and equipment health. Another important component of TLM is lubricant consolidation. Many plants operate with dozens of lubricant grades, increasing inventory complexity and the risk of cross-contamination. Best-in-class lubrication programmes often reduce lubricant inventories by more than 30 per cent while simultaneously improving operational reliability.
Training also plays a critical role. Industry surveys suggest that fewer than half of lubrication technicians receive formal lubrication training. Yet organisations that invest in lubrication education consistently report lower failure rates, improved maintenance performance, and better asset utilisation. One widely cited industrial case study documented a reduction in bearing failures from nearly 400 per month to just 12 after implementing comprehensive lubrication excellence initiatives.

Supporting sustainability
Sustainability has become a central priority across the cement industry. While alternative fuels and carbon capture technologies often dominate discussions, lubrication also contributes significantly to environmental performance.
Longer-lasting lubricants reduce waste oil generation and disposal requirements. Large integrated cement plants may consume tens of thousands of litres of lubricants annually, making lubricant lifecycle management an important sustainability consideration. Extending drain intervals by even 50 per cent can substantially reduce lubricant consumption and associated environmental impacts. Improved lubrication also extends equipment life, reducing demand for replacement components and lowering the environmental footprint associated with manufacturing, transportation, and installation activities. By reducing friction and wear, lubricants enable machinery to operate more efficiently while consuming less energy.
Tribology researchers Holmberg and Erdemir estimate that advanced friction-reduction technologies could potentially reduce global carbon emissions by up to 1,460 million tonnes annually. Although this figure spans multiple industrial sectors, it
highlights the enormous sustainability potential of improved lubrication practices. For cement manufacturers pursuing net-zero ambitions, lubrication represents one of the most accessible and cost-effective tools available.

Digitalisation, automation, and smart monitoring
The future of lubrication management is increasingly digital. Smart sensors, Industrial IoT platforms, automated lubrication systems, and artificial intelligence are changing how maintenance teams manage equipment health.
Modern lubrication monitoring systems can continuously track temperature, viscosity, moisture levels, contamination levels, and lubricant condition in real time. This enables maintenance personnel to identify emerging issues before they affect production, allowing interventions to be planned rather than forced by equipment failures.
“The future of lubrication management will be defined by the integration of smart, data-driven, and automated systems powered by IoT sensors, artificial intelligence, and real-time oil condition monitoring. These technologies are enabling a shift from traditional schedule-based lubrication to predictive and prescriptive maintenance, where lubricant quantity, frequency, and selection are optimised based on actual equipment condition. The result will be near-zero unplanned downtime, lower lubricant consumption, higher equipment reliability, and improved Overall Equipment Effectiveness (OEE). As India continues to add significant cement manufacturing capacity, early adopters of intelligent lubrication technologies will gain a competitive advantage through lower operating costs, greater reliability, and stronger sustainability performance” says Dr Hegde.
Automated lubrication systems are also becoming more prevalent throughout the cement industry. By delivering precise lubricant quantities at predetermined intervals, these systems eliminate many of the inconsistencies associated with manual lubrication practices. The result is improved equipment protection, lower lubricant consumption, and enhanced reliability.
Market analysts forecast the global predictive maintenance market to exceed $50 billion by 2030, reflecting the growing importance of data-driven maintenance strategies. As digital technologies continue to mature, lubrication will become an increasingly integrated component of broader asset performance management systems.

Conclusion
As cement manufacturers pursue greater productivity, higher sustainability standards, and improved operational resilience, lubrication must be recognised as a strategic business function rather than a routine maintenance activity. The evidence is overwhelming: effective lubrication improves reliability, reduces energy consumption, extends equipment life, lowers maintenance costs, and supports sustainability objectives simultaneously.
The next frontier of cement plant optimisation will not be driven solely by larger kilns, more efficient mills, or alternative fuels. It will also be shaped by how effectively operators manage the health of their critical assets. Through advanced lubricants, predictive maintenance, oil analysis, contamination control, and Total Lubrication Management programmes, cement manufacturers can unlock substantial gains in operational performance while supporting long-term environmental and business goals.
In an increasingly competitive industry, lubrication is no longer merely about reducing friction. It is about enabling reliability, protecting profitability, and creating a foundation for sustainable growth. The plants that recognise this shift and invest in lubrication excellence today will be best positioned to meet the performance demands of tomorrow.

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