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There is renewed focus on making the cement industry cleaner and greener by optimizing various processes of manufacturing, storage and distribution that will help reduce the carbon footprint and make the industry far more profitable and sustainable.
Though Indian cement industry is one of the most efficient in the world, it still produced 137 tonne of CO2 in 2010 – approximately 7 per cent of India?s total manmade CO2 emission. The Indian cement industry has made strong efforts to reduce its carbon footprint. It has successfully reduced CO2 emission from 1.12 kg CO2 per tonne cement in 1996 to 0.719 kg CO2/tonne cement in 2010. Today, awareness of sustainability in cement industry has picked up momentum and several efforts are on integrating the sustainability issues (essentially in energy conservation, resource optimisation and environment) with business planning and reviews. Cement industry needs to focus on five broad categories of carbon emission reduction levers, viz., thermal and electrical energy efficiency, co-processing of alternate fuels and raw materials, clinker substitution, waste heat recovery for power generation and adoption of new technologies like CCS (Carbon Capture and Storage), algal growth promotion and use of bio fuels.

Technological improvement is a key pillar in the cement industry?s drive to reduce emissions levels and energy consumption. Research and development investments have enabled cement producers worldwide to install modern, energy-efficient technology in new, and to some extent, in existing, cement plants. New technologies have enabled increased use of clinker substitutes and alternative fuels in cement production, leading to significant direct (eg, from limestone decarbonisation and fuel burning) CO2 emissions reductions. Technology developments have also enabled significant indirect emissions reductions (eg, from electricity use). Indian cement industry have comparatively better technology as most of the plants are new and they are equipped with latest technologies.

Says JC Toshniwal, Executive Director, Wonder Cement, ?Almost all cement plants are today working on improving their fuel efficiency, power efficiency, renewable energy, waste heat recovery (WHR), etc. So all these are now focus points towards sustainability in the industry. Cement industry in India is one of the most efficient globally, may be better than global level, in terms of power and fuel consumption.? He adds, ?Now the focus has gradually shifted towards renewable energy, WHR, and blended cement which also help in reducing CO2 generation. The industry is also working on reduction of SOx and NOx, which are adverse to the environment. For this purpose, cement manufacturers are setting up different types of calciners like two-stage calciners where NOx generation is reduced. In the next 3-4 years, you can see some drastic changes in the industry on these parameters.?

Anil Kumar Pillai, Chief Executive Officer, JSW Cement, throws light on some of the possible ways to increase sustainability in cement production. According to Pillai, use of the latest technology equipment/technology up-gradation for older plants is a must. Waste heat recovery boilers should be installed to generate power from waste hot gases; use of alternative raw materials; use of fluxes to lower the burning temperature in cement kiln to lower the energy consumption; use of chemical gypsum to the optimum level so that mineral gypsum may be conserved; use of grinding aids to reduce electrical energy consumption; and production of blended cements such as PPC, PSC, limestone blended cement etc are some other areas. He adds, ?However, judging from the possibilities to improve sustainability by optimizing the raw material supply, adopting latest energy efficient technologies, optimizing the production process, substituting alternative fuels and raw materials, and finally blending the final product with suitable admixtures, it seems that the emphasis of most cement producers is still focused on selected parts of these different possibilities, especially the final substitution of cement by various mineral admixtures. It is therefore imperative for the cement producers to adapt fast enough and to a sufficient degree to exploiting all the possible options to reduce their environmental footprint.?

Key levers to reduce emission in the Indian cement industry are increased rates of blending leading to a reduction in clinker to cement ratio, increased use of AFR, widespread implementation of WHR, transportation of raw materials through conveyor belt instead of road transport, installation of various VFD/high energy efficient equipment to reduce SPC. Cement manufacturing process from surface mining/quarrying, locating main acclimatisation unit near limestone deposits, transporting clinker through rail, transporting fly ash through pipeline are few measures which will help in achieving and sustaining this targets.

?Blended cement proportion in total Indian cement industry is approximately 70 per cent. Manufacturing of PPC results in approximately 20-30 per cent reduction in CO2 against 1 MT of OPC production also manufacturing of PSC results in 30-35 per cent reduction in CO2 mitigation,? says VP Sharma, Managing Director & CEO, ABG Cement. ?We at ABGCL will be producing 100 per cent blended cement. The target goal for ABGCL to reduce carbon footprint by 2020 is 30 per cent for its equivalent of OPC production by employing different methods like waste heat recovery, alternate fuel firing, installing solar panels on major building roofs and producing blended cement,? he points out. According to Sharma, Indian cement industry has huge potential in reduction of usage of fossil fuel by using alternative fuels – hazardous AFR like slag and non-hazardous AFRs like pet coke, shredded tyres, rice husk, bio masses, municipal waste etc. Present thermal substitution rate by usage of AFR is as low as 1-1.2 per cent against 40 per cent achieved by developed countries. He adds, ?The cement industry has shown great enthusiasm for installation of waste heat recovery system but we still have way to go for achieving its full potential. Installation of waste heat recovery system shall be made compulsory for all new cement projects and proper studies shall be made to make it highly efficient by 6/5 stage pre-heater systems. We are already in discussion with various vendors for installation of WHR system of 8-10 MW power generations with our six-stage pre-heater.?

Says Prabir Ray, Head RMC, Building Products Division and Key Accounts, UltraTech Cement, ?UltraTech is committed towards improving its sustainable footprint through constant innovation. We focus on producing quality products that meet the needs of our customers, while ensuring that we reduce our environmental footprint, take care of our employees? health and safety, and contribute to wider initiatives for our communities. We are a member of Cement Sustainability Initiative (CSI), and we aim to improve our sustainable footprint in waste management, energy reduction, water conservation, biodiversity management, afforestation and emission reduction.? He further adds, ?We are strategically focusing on development of products and services that help customers build sustainable structures – structures which are more durable, more resource-efficient, more cost effective and more conducive to the human lifestyle. Innovation is the tool we have adopted to spearhead scientifically engineered products that complement future-ready construction practices.?

PAT impact
According to Pillai, Perform – Achieve – Trade (PAT) compliance could be treated as an important milestone in the journey towards energy excellence. With ever-rising cost of input energy, companies aspiring for such excellence are bound to gain sustainable strategic advantage and earn handsome dividends. By achieving PAT target, not only compliance is met but also organizations can move toward triple bottom line reporting. In spite of many benefits of the PAT scheme, the underlying principles of National Mission for Enhanced Energy Efficiency (NMEEE) can only be realized if PAT is seen as milestone and not a destination in the long journey toward energy excellence. PAT scheme rewards the over achiever and penalise the underperformer.

Says Kamal Kumar, Chief General Manager, Holtec Consulting, ?Introduction of PAT scheme for energy intensive industries improve energy efficiency and facilitates cost effectiveness by certifying energy saving measures that could be traded through its market-based mechanism. It is a good scheme to achieve the target, but the parameters which have been fixed by the BEE are quite stringent, specifically for the old vintage plants. Largely, the PAT scheme will facilitate in reducing the energy consumption levels of the system.?

Reducing energy consumption will not only benefit the DC but would also have a lasting impact on the planet. One tonne (tonnes of oil equivalent) reduction in energy consumption can potentially reduce carbon dioxide emissions by 3.18 tonne. In addition to the above, the BEE conducts conferences and workshops on energy efficiency and advanced technologies. Companies could use such programs to train their employees for sustainable energy management. These employees could be further empowered by management to achieve higher performance through suitably designed key performance indicators (KPI).

?The PAT scheme has generated a lot of ripples in the energy intensive process industries and is perceived as a source of capital outflows in tough economic times. The PAT scheme aims at reducing the energy consumption per unit of output product. In the current situation, when increasing competition is already putting pressure on margins, reduction in energy cost will help boost the bottomline. For example, energy cost accounts for 35-40 per cent of total manufacturing expenses for Designated Consumers? (DCs) in the cement sector. So, reduction of 10 per cent in the energy cost could potentially boost operating profit margins by around 20 per cent,? says Pillai. He adds, ?With the new Companies Act mandating CSR spend, increased profit margins would also allow companies to contribute some portion of their profits to strengthening the community. Hence, the PAT scheme hits the sweet spot between the three pillars of the triple bottom line.?

The way ahead
The Indian cement industry is probably one of the most energy-efficient in the world today. Some of the plants have thermal and electrical specific energy consumption (SECs) comparable to the best cement plants in the world resulting in low emission intensities. The industry which is on the top in the Certified Emission Reductions Projects list registered with the Clean Development Mechanism (CDM) of the Kyoto Protocol has contributed significantly to the eco-friendly use of industrial wastes and thereby has succeeded in reducing its carbon footprint. However, the opportunity for improvement does exist, particularly in the area of five key levers that can contribute to emissions reductions such as alternative fuel and raw materials; energy efficiency; clinker substitution; waste heat recovery and newer technologies. This roadmap sets out a pathway by which the Indian cement industry can reach its targets to improve energy efficiency and reduce CO2 emissions by 2050, thereby laying the foundation for low-carbon growth in the years beyond.

MAJOR CHALLENGES

  • Selection of plant location – proximity sources of raw material, additive (gypsum, slag, fly ash, AFR etc)
  • Highly energy-intensive industry using non-renewable raw materials and thus emits large amount of CO2 especially from limestone and coal burning
  • Older cement plants have to invest heavily for technological up-gradation Marginal grade of limestone has to be compensated with low ash coal imported from South Africa, Indonesia etc.
  • Many limestone reserves are located in ecologically sensitive areas
  • About 90 per cent of limestone in India is extracted by blasting and less than 10 per cent by surface miner. Blasting has much higher environmental impact ? dust, noise, vibration, fly rock generation etc. Most of the limestone is quite hard and thus not suitable for extraction with surface miner
  • Solid waste generation and its proper management in mines (low grade limestone, clay etc)
  • Product is not recyclable
  • Challenges in maintaining stringent dust emission levels while material storage and handling
  • Challenges in maintaining NOx levels
  • Scarcity of water in most areas
  • Lack of railway siding at many plants
  • Availability of wagons from railways
  • Market pressure for high compressive strength
  • Lack of awareness among customers towards the environmental benefits of using blended cement (PSC, PPC etc)
  • Lack of captive power generation at most plants – high transmission losses have to be incurred while sourcing power from long distances

PERFORM – ACHIEVE – TRANSFER
Perform – Achieve-Trade (PAT) is the Energy Conservation drive launched by BEE (Bureau of Energy Efficiency) under National Mission for Enhanced Energy Efficiency. Base line figures are average of past three years (2007-08, 2008-09 & 2009-10). Target has been given by BEE to reduce from baseline figures in a span of three years, starting April, 2012 and ending March 2015. PAT is applicable for energy intensive industries. It covers 563 designated consumers in eight sectors. The energy specific improvement target would have to be almost ?Unit Specific?. Each Designated Consumers (DC) is mandated to reduce its Special Energy Consumption (SEC) by a fixed percentage based on its current SEC (or baseline SEC) within the sectorial bandwidth. In Indian scenario, if we look at percentage wise, on an average 40 per cent energy consumed by industry, 7 per cent by Agriculture and Fisheries, 43 per cent commercial and services, 10 per cent household and others. This PAT scheme is participated by ?Designated Consumers? of energy intensive sectors – thermal power plant/iron and steel/cement/fertiliser/textile/pulp and paper/chloro-alkali. At the end of third year, Energy Saving Certificate will be issued to a DC, who will achieve target reduction from baseline. DC who will fail to achieve the target, penalty linked with value of non-compliance will be imposed. This ES Certificate can be traded to others who will fail to meet their target. This trading can be carried out between any two DCs. The exchange will also maintain data on traded prices, traded volume and trend. Special trading platform will be created in the two Power Exchanges (IEX and PXIL). This scheme has to come out very effective across industry. It is directly linked with profitability in long term. It will help in reducing cost and improve profitability.

GREENCO RATING
The first of its kind in the world the GreenCo Rating System by CII Godrej GBC, provides a much needed holistic framework to evaluate industries on their environmental performance. CII, through an extensive stakeholder consultation and interaction with experts, have developed the guidelines of GreenCo. This rating will act as a milestone for companies pursuing green to assess where they stand and help them in defining the path forward. Vasavadatta Cement, Sedam was awarded GreenCo Gold by the Confederation of Indian Industry (CII) for the year 2012-15. It is the first cement plant to be certified under GreenCo, Green Company Rating System. Under the leadership of CK Jain, Unit Head, Vasavadatta Cement, Sedam has been able to achieve GreenCo Gold due to tremendous amounts of hard work taken by the plant for years together on various aspects of sustainability. Another major cement company that has bagged the GreenCo Certification is ACC, Thondebhavi Cement Works which has been rated GreenCo Silver.

Says Jain, ?The Green Company Rating System has helped us in effectively communicating to our stake holders about our commitment to sustainable growth, to reduce consumption of natural resources without jeopardising growth of the company. According to him one of the most important reasons behind applying for the rating system was to understand the company?s environmental performance on various aspects of environmental sustainability. This includes areas such as energy efficiency, water conservation, greenhouse gas emission, waste management, material conservation, recycling and recyclability, green supply chain, product stewardship, life cycle analysis, other areas like ventilation, biodiversity preservation, innovation, etc.

Jain further adds, ?GreenCo gives energy efficiency 20 per cent weightage. Energy costs also account for approximately 45 per cent of our expenditure. The system emphasises the need to have an energy policy, formation of cross-functional energy management cell, energy metering and monitoring systems, setting internal, national and international benchmarks and equipment wise efficiency monitoring. All these initiatives have a direct impact on the energy consumption of the plant as well as energy costs. The rating system has helped us in achieving our objectives of understanding our environmental performance on various aspects of environmental sustainability and in framing a long term roadmap on how to be greener.?

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Economy & Market

Fornnax Names Lukas Baur as Authorised Service Partner to Bolster EU Operations

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Strapline: Fornnax Technology has appointed NOBA Maschinenservice’s Lukas Baur as its authorised service partner for the European Union, strengthening its commitment to delivering fast, reliable, and localised after-sales support across the region.

Fornnax Technology, a leading manufacturer of industrial shredding solutions, has announced the appointment of Mr. Lukas Baur of NOBA Maschinenservice as its authorised service partner for the European Union. The partnership, formalised under the authorisation of Fornnax CEO Mr. Jignesh Kundaria, reinforces the company’s commitment to providing dependable, localised service support to its expanding customer base across Europe.

Strengthening Service Through Proven Expertise

With over two decades of experience in servicing, maintaining, and overhauling industrial shredders, Mr. Baur brings extensive technical expertise to the partnership. His capabilities span welding, hardfacing, shaft and knife rebuilding, complex assembly, hydraulics, and complete electrical engineering services, delivered in collaboration with a trusted partner company based in Halle/Saale.

Operating from Worbis, Germany, Mr. Baur is strategically positioned to provide emergency support across the European Union within 24 hours, covering an operational radius of approximately 1,000 kilometres.

Supporting this capability is a well-equipped service infrastructure comprising 12 Mercedes Sprinter service vans, a team of 24 skilled technicians, specialised bearing-change tools, a fully equipped hydraulic workshop, and a 1,000-square-metre facility with a five-ton crane track. Together, these resources position his team to manage the complete spectrum of Fornnax’s European service requirements efficiently and reliably.

Partnership Driven by Industry Insight

Having spent years servicing Eldan, Lindner, and Vecoplan shredders across the European recycling industry, Mr. Baur’s decision to collaborate with Fornnax is rooted in his understanding of market needs and customer expectations. His experience has provided valuable insight into what recycling plant operators require—not only from their machinery but also from the service teams supporting them.

According to Mr. Baur, Fornnax’s reputation for robust machine construction, superior wear protection, and maintenance-friendly design made the partnership a natural fit.

The collaboration comes at a time when Europe’s tyre recycling industry is facing mounting challenges, including rising cost pressures, shrinking margins, delayed investments, and a shortage of skilled labour. Mr. Baur believes these conditions reinforce the need for technically strong service partners capable of delivering rapid, dependable support.

Commenting on the partnership, he said, “Fornnax, with its exceptional price-performance ratio and superior quality, has the potential to become a market leader in Europe. We would like to be their service partner in this journey.”

Comprehensive Support Across the Equipment Lifecycle

As Fornnax’s authorised service partner, Mr. Baur will oversee the complete lifecycle support of the company’s equipment throughout the European Union. His responsibilities will include installation, commissioning, preventive maintenance, emergency repairs, and spare parts support across mechanical, hydraulic, and electrical systems.

Looking ahead, he also plans to develop a centralised spare parts distribution hub for European customers, particularly if Fornnax establishes a warehouse facility in Worbis to facilitate faster deliveries. To further strengthen service coverage, Mr. Baur intends to expand operations by adding two to three additional service teams and vehicles each year, progressively increasing capacity across the continent.

A Shared Commitment to Customer Excellence

Highlighting the strategic importance of the partnership, Mr. Jignesh Kundaria, Director and CEO of Fornnax, said:

“We strongly believe that by continuously improving our service quality and customer satisfaction index, we can build long-term relationships with our customers. Higher customer satisfaction leads to greater trust, which significantly increases repeat orders and ultimately drives sustained growth in our sales revenue.”

This customer-first philosophy underpins Fornnax’s strategy of building a dedicated European service partner network instead of relying solely on remote support. With Mr. Baur joining this network, customers across the European Union will benefit from faster response times, expert technical assistance, and dedicated on-ground support from a partner with extensive experience in high-throughput shredding operations.

Mr. Baur’s appointment also reflects Fornnax’s broader ambition to establish itself as the preferred shredding solutions provider for the European recycling industry, marking another important milestone in the company’s international growth strategy.

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Concrete

Nuvoco Vistas launches Limla cement plant, expands Gujarat footprint

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Nuvoco Vistas opens a 2 MMTPA grinding unit at Limla, entering Gujarat and advancing its target of 35 MMTPA capacity by FY 2028.

Surat (Gujarat)

Nuvoco Vistas Corporation Ltd, a part of Nirma Group and one of India’s leading building materials company, has inaugurated the Limla Cement Plant in Surat (Gujarat), one of Vadraj Cement Limited’s (VCL) principal manufacturing facilities. The commissioning represents a key milestone in Nuvoco’s acquisition and restoration of VCL, while supporting the company’s expansion across the Western Indian cement market.

Vadraj Cement Limited is a subsidiary of Nuvoco Vistas Corporation Limited and has installed cement capacity of 6 MMTPA across its assets. The Limla inauguration therefore represents the first operational step in the acquired platform’s wider revival, while the Kutch facilities provide clinker supply, mineral security and coastal logistics support for the western business.

Nuvoco completed its acquisition of Vadraj Cement Limited, then under the Corporate Insolvency Resolution Process, after paying a consideration of Rs 1,800 crore in June 2025. VCL’s asset portfolio comprises a clinker unit at Kutch and a grinding unit at Limla in Surat. It also includes high-quality captive limestone reserves and a captive jetty at Kutch, supporting more efficient logistics. Following the takeover, Nuvoco began an extensive programme of restoration, refurbishment and expansion at both locations, leading to the commissioning of the Limla plant.

The Limla Cement Plant is expected to support a phased increase in sales volumes across Gujarat. It will also help Nuvoco supply neighbouring markets in Western Maharashtra and release cement capacity from its northern plants, which can consequently be redirected towards markets in North India. The plant will manufacture a full portfolio comprising Ordinary Portland Cement, Portland Slag Cement, Portland Pozzolana Cement and Portland Composite Cement. It will additionally produce the complete Nuvoco Duraguard range, including the premium Nuvoco Duraguard Microfibre product. The acquisition is also expected to generate operational synergies with Nuvoco’s existing plants at Nimbol and Chittorgarh in Rajasthan, improving logistics optimisation and market reach across important regional markets.

The grinding unit at the Limla Cement Plant was completed ahead of schedule, with 2 MMTPA of capacity now inaugurated to expand Nuvoco’s operating scale and customer reach. After Vadraj Cement’s assets become fully operational, plants in North and West India are expected to account for nearly 40 per cent of Nuvoco’s total cement capacity. This will broaden the company’s manufacturing network, strengthen access to high-growth markets and support its plan to increase consolidated cement capacity to 35 MMTPA by FY 2028, reinforcing its longer-term growth strategy.

Commenting on the development, Jayakumar Krishnaswamy, Managing Director, Nuvoco Vistas Corp Ltd, said: “The inauguration of the Limla Grinding Unit in Surat is an important milestone in Nuvoco’s growth journey and demonstrates our commitment to disciplined, value-accretive expansion. Gujarat is strategically significant for Nuvoco, with substantial opportunities arising from infrastructure investment, industrial growth, rapid urbanisation and continuing demand from the housing and construction sectors. The facility strengthens our regional footprint, improves operational flexibility and increases our ability to serve customers across northern and western markets with greater reliability and efficiency.”

He added: “Through the Vadraj acquisition, we have refurbished and restarted a strategically important asset, returning it to operations in record time through strong execution and collaboration between teams. The achievement demonstrates our ability to create value from acquired assets, fulfil our commitments and retain the confidence of stakeholders. It also highlights the strength of our project delivery capabilities and our continued focus on building sustainable, profitable growth over the long term.”

Nuvoco Vistas Corporation Limited is a building materials company whose vision is to build a safer, smarter and more sustainable world. It is among the leading players in East India and has a significant presence across North and West India. Nuvoco began operations in 2014 with a greenfield cement plant at Nimbol, Rajasthan. It later acquired Lafarge India Limited, which had entered India in 1999, followed by Emami Cement Limited in 2020 and Vadraj Cement Limited in April 2025. The company has also announced an expansion in eastern India through a new grinding mill at the Arasmeta Cement Plant, supported by several debottlenecking programmes involving equipment upgrades, process improvements and internal capacity initiatives. These developments place Nuvoco on track to achieve total cement capacity of approximately 35 MMTPA. The company reported total income of Rs 11,362 crore in FY 2025-26, reflecting its continuing growth trajectory.

Nuvoco operates a diversified portfolio across three segments: Cement, Ready-Mix Concrete and Modern Building Materials. Its cement portfolio includes Concreto, Duraguard, Double Bull, PSC, Nirmax and Infracem, covering Ordinary Portland Cement, Portland Slag Cement, Portland Pozzolana Cement and Portland Composite Cement. Its pan-India RMX business provides value-added products under Concreto for performance concrete, Artiste for decorative concrete, InstaMix for ready-to-use bagged concrete, X-Con covering M20 to M60 grades, and Ecodure for specialised green concrete. Nuvoco has supplied materials to projects including the Mumbai-Ahmedabad Bullet Train, Birsa Munda Hockey Stadium in Rourkela, Aquatic Gallery at Science City in Ahmedabad, and metro railway projects in Delhi, Jaipur, Noida and Mumbai.

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Concrete

Green Construction Through Cement Innovation

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Indian Cement Review (ICR) and Fuller Technologies brought industry, policy and technology leaders together to discuss how cement innovation can drive green construction at scale, writes Rakesh Rao.

India is building at a pace few countries can match. Highways, airports, housing, logistics parks, industrial corridors and urban infrastructure are reshaping the country’s economic geography. But beneath this growth story lies a difficult question: can India continue to build at scale without locking itself into a high-carbon future?

That question formed the core of an online panel discussion titled “Driving Green Construction Through Cement Innovation”, organised by Indian Cement Review (ICR) in association with Fuller Technologies as the Presenting Partner on June 25, 2026. The webinar brought together experts from cement technology, R&D, global industry platforms, building performance policy and international development cooperation to examine how low-carbon cement and material innovation can accelerate India’s green construction transition.

The discussion came at a crucial time. India has committed to achieving net-zero emissions by 2070 and reducing the carbon intensity of its economy by 45 per cent by 2030. At the same time, the country’s construction sector is expanding rapidly, driven by urbanisation, infrastructure development, housing demand and industrial growth. Cement, as one of the most widely used construction materials, sits at the heart of this transition. It is indispensable to development, but also central to the challenge of reducing embodied carbon in buildings and infrastructure.

Moderated by Nitika Krishan, Senior Urban Infrastructure and Sustainable Policy Consultant, the panel featured:

  • Kiranmai Sanagavarapu, Director, Low Carbon Solutions, Fuller Technologies;
  • Dr Hemantkumar Aiyer, VP and Head R&D, Nuvoco Vistas Corp Ltd;
  • Devika Wattal, Innovation Lead, Global Cement and Concrete Association (GCCA);
  • Dr Sunita Purushottam, MD, GBPN India (Global Buildings Performance Network); and
  • Vaibhav Rathi, Senior Technical Advisor, GIZ (the German Agency for International Cooperation)

Setting the tone for the discussion, Nitika Krishan underlined the scale of the challenge before the sector. “The question before us is no longer whether we build, but how we build sustainably,” she said. She pointed out that construction accounts for nearly 40 per cent of global energy-related carbon emissions when both operational and embodied carbon are considered. Cement production, she added, remains one of the hardest industrial processes to decarbonise.

For India, this is not merely an environmental issue. It is a development issue, a competitiveness issue and increasingly, a market issue. As one of the world’s largest cement producers and among the fastest-growing construction markets, India’s material choices will influence the carbon trajectory of its built environment for decades. As Krishan observed, sustainability solutions in economies such as India must not remain limited to laboratory success. They must be scalable, commercially viable and practical at national level.

The innovation gap: From technology to market

Experts believe that there is a need to bridge the innovation gaps for making decarbonisation in cement and concrete scalable. Devika Wattal of GCCA, explained, “The starting point must be the core cement manufacturing process itself. The first and foremost is the heart of our process, the heart of cement manufacturing. How do we reduce clinker? That is always a topic where industry is working very intrinsically.”

Clinker reduction remains one of the most important pathways for lowering emissions in cement. Since clinker production is energy-intensive and chemically emits carbon dioxide, reducing the clinker factor through supplementary cementitious materials (SCMs), blended cements and new chemistries can have a significant impact. Wattal also noted that carbon capture, utilisation and storage (CCUS) will have a role, though it may not be the first lever for all markets.

However, she stressed that innovation cannot stop at technology development. A solution that works in the lab must also be adaptable to industry, scalable in production and acceptable in construction practice. “It is important for that innovation to be adaptable, to be scalable, and so that it can be executed in real time,” she said.

Wattal also called for stronger enabling systems around innovation. These include performance-based standards, product-level embodied carbon databases and clearer frameworks for evaluating green materials. Without these, low-carbon cement products may struggle to compete with conventional materials in procurement and design.

R&D must balance carbon, cost and performance

Bringing in the R&D perspective into the discussion, Dr Hemantkumar Aiyer of Nuvoco Vistas emphasised that low-carbon cement development cannot be treated as a single-variable exercise. Cement must perform in real construction conditions. It must deliver strength, durability, consistency and cost competitiveness, while also reducing carbon.

“The root of understanding and balancing all these aspects lies in materials, and knowing the materials,” he said.

According to Dr Aiyer, R&D teams must understand the variability of raw materials such as fly ash, slag and clinker. Different sources produce different material behaviours. This makes mix optimisation, material characterisation and processing-property relationships critical. When performance is affected, cement manufacturers must understand how strength enhancers, admixtures and other performance chemicals interact with the material system.

He also linked material science with process efficiency. Clinkerisation takes place at extremely high temperatures, around 1,400 to 1,450 degrees Celsius. Any improvement in raw mix design, process control or energy optimisation can, therefore, help reduce emissions and cost. Dr Aiyer pointed to artificial intelligence-based optimisation, Cement 4.0 tools and advanced software as important enablers for real-time process and material control.

“The more you understand the materials, the more you can control it,” he said.

LC3: The promise is proven, the sequencing is not

Limestone calcined clay cement, commonly referred to as LC3, has attracted global attention because it can reduce clinker content significantly by using calcined clay and limestone while maintaining performance in many applications. Kiranmai Sanagavarapu of Fuller Technologies said the technology itself has already moved beyond proof of concept. Fuller Technologies has worked with calcined clay technology for nearly two decades and has seen plants running in France and Ghana. These plants, she said, are meeting local and national specifications, while the economics are beginning to make sense.

“The calciner is performing, the economics is stacking up, it is making business sense to produce,” she said.

But if the technology is viable, why has adoption not scaled faster? For Sanagavarapu, the answer lies in project sequencing. Too often, clay characterisation happens after equipment is specified. This, she warned, is a backward approach because calciner design depends on clay mineralogy, kaolinite content, iron levels, reactivity, moisture and other variables.

“If you don’t know what your deposit looks like before you commit for the equipment, you are, in a way, going blind into designing,” she said.

She also identified permitting and plant integration as major bottlenecks. Environmental clearances, mining permissions and local regulatory approvals must begin early. Similarly, calcined clay must be integrated into existing grinding, blending and logistics systems from the design stage, not treated as an afterthought during commissioning.

India already has IS 18189:2023 standard for LC3, but Sanagavarapu pointed out that the standard is not yet visible enough in procurement documents. “The gap between what is technically being permitted and what the procurement is asking is the single biggest bottleneck,” she said.

In her view, successful scale-up depends on getting the sequence right: clay characterisation first, permitting in parallel, standards aligned with construction, and integration built into plant design.

India’s LC3 journey: Progress, but demand remains thin

Providing details of India’s LC3 commercialisation experience, Vaibhav Rathi of GIZ noted that JK Cement carried out the first commercial production of LC3 at its Rajasthan plant, followed by JK Lakshmi Cement three months later. These initiatives were supported by the International Climate Initiative of the Government of Germany, with IIT Delhi contributing deep institutional knowledge on LC3 research and BIS certification.

Rathi said India’s early experience has produced clear lessons. One of the biggest was the need to build capacity among regulators. While BIS certification existed, State Pollution Control Boards were unfamiliar with the technology and unsure about the approval pathway.

“The capacity building is not just needed amongst the producer and the users of the cement, but also the regulators who are working with this technology for the first time,” he said.

He also highlighted the need for better information on China clay deposits. Since China clay is currently classified as a minor mineral, centralised data on availability, quality and location is limited. If cement manufacturers are to adopt LC3 at scale, stronger mineral intelligence will be important.

The third issue is demand. LC3 has already been used in projects such as Palava City in Mumbai and Noida International Airport, but these remain limited examples. “It is in a chicken and egg situation,” Rathi said. “Cement companies are saying we need more demand, and users are saying there is not enough cement available.”

Public procurement, he suggested, could help break this cycle. If agencies such as CPWD and other public bodies begin testing, accepting and specifying LC3, it could create the market confidence needed for cement companies to invest in production and storage.

Building codes must catch up with innovation

Dr Sunita Purushottam of GBPN India argued that material choices will determine built environment emissions over the long term, but India’s current policy signals remain fragmented. Although LC3 has received BIS recognition, she pointed out that building codes, municipal bylaws, schedules of rates and sustainability codes do not yet provide uniform guidance on low-carbon cement.

“The current cement regulations are largely prescriptive and favouring traditional materials,” she said. This limits the ability of alternative materials to compete on performance, durability and emissions.

Dr Purushottam also raised the issue of taxation. Cement, including LC3, currently falls under the same GST bracket as conventional cement. A differentiated tax structure, she argued, could help accelerate market adoption. “In order for the market to demand LC3, that differentiation in the GST could go a long way,” she said.

She noted that green building certifications such as IGBC and GRIHA are already creating demand for low-carbon materials by assigning points for embodied carbon and sustainable material use. However, she said large-scale adoption will require regulatory mandates, particularly through building codes and state-level notifications.

She also cautioned that low-carbon cement alone does not solve the entire building performance problem. A material may reduce embodied carbon, but the operational carbon of a building depends on thermal performance, design, insulation and energy use. “The energy part has two elements,” she said. “One is the embodied carbon of the material itself, and the other is the operational carbon.”

Collaboration is the bridge between invention and impact

Wattal said GCCA sees innovation as a strategic priority and works through platforms that connect industry with academia and start-ups. “There is no way we will decarbonise our sector without innovation,” she said.

However, she stressed that research must be connected to actual industry challenges. Innovations developed in isolation may fail when they encounter real-world barriers such as raw material variability, plant integration, cost, standards and finance. Start-ups, too, need industry mentorship and scale-up pathways.

Wattal also flagged the importance of finance. Even strong technologies may struggle to attract investment if there is no common understanding of bankability. “We have always put projects into, is this a bankable project? But the definition of a bankable project has never been defined,” she said.

For India, she saw strong potential in its academic and start-up ecosystem, but said the challenge lies in alignment and prioritisation. The country has the research base, industrial capacity and market size. What it now needs is a coordinated route from innovation to deployment.

There is a practical concern for cement manufacturers: how can existing plants be adapted for lower emissions without compromising reliability or commercial viability?

Kiranmai Sanagavarapu addressed, “The reliability risk in calcined clay retrofit is definitely real, but it is almost always self-inflicted. The risk arises when a new process is added to an existing circuit without properly redesigning grinding and blending configurations.”

Existing cement plants, she explained, can take two broad routes. The first is external sourcing of calcined clay combined with mill optimisation. This requires lower capital investment and can potentially move in 12 to 18 months if other conditions are in place. It may reduce emissions by around 20 to 30 per cent. The second route is integrated calcination on site, which requires higher capital expenditure and longer lead times, but provides greater control over quality, supply and emissions reduction potential.

For Sanagavarapu, the principle is simple: low-carbon retrofits must be designed with intent. “Design it with an intent properly from the start. Start in the market conditions where the economics are already working,” she said.

Circularity: The overlooked advantage

According to Vaibhav Rathi, fly ash and slag are already well established in cement and construction (C&D), but construction and demolition waste remains underutilised. “C&D waste is a growing business opportunity which not many have taken up,” he said. India’s continuous construction and demolition activity creates huge volumes of waste, much of which contributes to air pollution, land degradation and material inefficiency. With the right processing and standards, this waste can be converted into useful construction products.

Rathi also pointed out that LC3 has a circular economy dimension that is often overlooked. It can use low-grade kaolin-rich clay left behind after high-grade clay is extracted for other applications. “LC3 is not only a low-carbon solution, but also a circular economy solution,” he said.

At the same time, he cautioned that LC3 in India is not yet cheap because it has not reached scale. Site-specific techno-commercial feasibility studies, supported jointly by development agencies and industry, could help companies assess whether LC3 production makes technical and financial sense at a given location.

Dr Purushottam added that India must address both low-carbon cement and construction waste together. “Both low-carbon cement and C&D waste go hand in hand. India does not have an option but to work on both,” she said.

Dr Aiyer called for policy shifts from both government and industry, including preferential purchasing of sustainable materials, minimum supplementary cementitious material requirements in public and public-private projects, and faster regulatory implementation. “If we can fast-track the regulatory standards and their implementation on the ground, that is the way to go,” he said.

From green ambition to green construction

Cement innovation is no longer only about chemistry. It is about systems. Low-carbon cement will scale only when technology, standards, procurement, finance, regulation, education and construction practice move together.

LC3 and other low-carbon technologies have shown promise. India has early commercial examples, strong research capability and growing market interest. But mainstream adoption will depend on whether demand can be created, regulators can be capacitated, standards can be embedded in procurement, and manufacturers can see a clear business case.

For a country building at India’s scale, the opportunity is enormous. Cement will continue to be central to infrastructure and urban development. The challenge now is to ensure that the cement used in India’s growth story carries a lower carbon burden.

  • Rakesh Rao

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