CEMENT & LIME

Decarbonising the process,not just the energy.

Cement and lime face one of industry's hardest transition challenges. Deep emissions reductions require action across process chemistry, thermal energy, materials and carbon capture — while protecting the economics and reliability of production.

Discuss your transition

Strategy, technology and investment planning for cement and lime producers.

Large cement production facility representing cement and lime decarbonisation

THE CHALLENGE

Some emissions cannotbe solved by switching fuels.

Unlike many industries, cement and lime generate substantial emissions directly from the chemical transformation of raw materials.

Even a plant powered entirely by low-carbon energy would still produce process emissions from calcination.

That changes the transition problem fundamentally.

Process emissions

CO₂ is released as limestone is converted into clinker or lime, creating emissions inherent to production chemistry.

High-temperature heat

Kilns operate continuously at extreme temperatures and demand large quantities of reliable thermal energy.

Long-lived assets

Major production assets operate for decades, making replacement cycles critical transition windows.

Competitive economics

Cement and lime are cost-sensitive commodities. Decarbonisation investments must work within demanding operating margins.

UNDERSTANDING THE BASELINE

The emissions profileshapes the pathway.

A credible strategy starts by separating the emissions that can be addressed through energy interventions from those requiring changes to materials, processes or carbon management.

The exact profile varies by plant, product mix, fuel system and clinker ratio — but process emissions typically remain the defining challenge.

~60%

Process emissions

Calcination of limestone during clinker production.

~30–35%

Thermal energy

Fuels used to generate kiln heat.

~5–10%

Electricity & operations

Grinding, material handling and other electrical loads.

DECARBONISATION PATHWAYS

No single technologysolves the sector.

Deep decarbonisation requires a portfolio of interventions deployed across different parts of the production system.

01

Efficiency

Use less energy.

Improve kiln performance, heat recovery, grinding efficiency and wider plant operations to reduce energy demand.

TYPICAL MEASURES

  • Waste heat recovery
  • Kiln optimisation
  • Efficient grinding
  • Process control
  • Electrical efficiency
02

Alternative Fuels

Reduce fossil thermal energy.

Increase the use of lower-carbon fuels while managing availability, process requirements and product-quality constraints.

TYPICAL MEASURES

  • Biomass
  • Waste-derived fuels
  • Alternative fuel systems
  • Fuel preparation infrastructure
03

Clinker & Materials

Reduce the carbon intensity of cement.

Lower clinker requirements and evaluate alternative materials that reduce process emissions per tonne of finished product.

TYPICAL MEASURES

  • Clinker factor reduction
  • Supplementary cementitious materials
  • Calcined clay
  • Alternative binders
  • Product optimisation
04

Electrification

Electrify where it makes sense.

Deploy electrical technologies across suitable auxiliary and thermal processes while evaluating future options for deeper kiln electrification.

TYPICAL MEASURES

  • Electrical auxiliaries
  • Material processing
  • Grinding
  • Selected heat applications
  • Emerging electric kiln technologies
05

Carbon Capture

Address residual process emissions.

For deep decarbonisation, carbon capture may be required to manage emissions that cannot be eliminated through energy or material interventions.

TYPICAL MEASURES

  • Post-combustion capture
  • Oxyfuel concepts
  • CO₂ conditioning
  • Transport infrastructure
  • Geological storage

BUILDING THE PATHWAY

Different levers solvedifferent parts of the problem.

The strategic question is not which technology wins. It is how multiple interventions combine into a credible pathway over time.

ILLUSTRATIVE PATHWAY
Transition LeverNear TermMedium TermLong TermPrimary Impact
Energy efficiencyHighHighHighEnergy
Alternative fuelsHighHighHighThermal emissions
Clinker reductionHighHighHighProcess emissions
ElectrificationSelectiveGrowingPotentially significantEnergy
Carbon capturePrepareDeployScaleProcess emissions

Different interventions address different sources of emissions and must be combined over time.

PATHWAY LOGIC

  1. Reduce

    Lower energy and material requirements.

  2. Substitute

    Replace fossil fuels and carbon-intensive materials.

  3. Transform

    Introduce new production and energy technologies.

  4. Capture

    Manage the residual emissions that remain.

HOW WE HELP

From the kilnto the investment plan.

  1. 01

    BASELINE

    Understand the plant.

    Map emissions, energy flows, production processes, assets and existing capital plans.

    • Emissions baseline
    • Asset map
    • Energy profile
  2. 02

    IDENTIFY

    Build the opportunity portfolio.

    Identify credible interventions across efficiency, fuels, materials, electrification and carbon management.

    • Abatement opportunities
    • Technology shortlist
    • Indicative impact
  3. 03

    EVALUATE

    Test the pathways.

    Compare technical feasibility, economics, infrastructure requirements and implementation risk.

    • Techno-economic analysis
    • Scenario modelling
    • Pathway comparison
  4. 04

    SEQUENCE

    Build the transition roadmap.

    Align investments with kiln lifecycles, shutdowns, infrastructure and technology readiness.

    • Priority initiatives
    • Investment roadmap
    • Decision gates

CAPITAL & TIMING

The kiln cyclesets the clock.

Major cement and lime assets can operate for decades. Rebuilds and replacements create rare opportunities to introduce fundamentally different technologies.

Missing one of those windows can lock an asset — and its emissions — into another investment cycle.

  1. 2027

    Major kiln maintenance

    ACTION

    • Efficiency upgrades
    • Instrumentation
    • Alternative-fuel preparation
  2. 2030

    Grid reinforcement available

    ACTION

    • Electrify suitable plant loads
    • Prepare future electrical infrastructure
  3. 2034

    Kiln rebuild window

    ACTION

    • Major technology decision
    • Integrate capture-ready modifications
  4. 2036

    Regional CO₂ infrastructure operational

    ACTION

    • Deploy carbon capture
  5. 2040

    Deep-decarbonisation configuration

    OUTCOME

    • Integrated low-carbon production pathway

The roadmap should preserve flexibility while ensuring that today's capital decisions do not close tomorrow's options.

DELIVERABLES

Evidence for the decisionsthat shape the plant.

01

Plant Emissions Baseline

A process-level view of energy and emissions across production.

02

Abatement Opportunity Portfolio

A structured assessment spanning efficiency, fuels, materials, electrification and carbon capture.

03

Technology & Economic Models

Comparable analysis of technical performance, capital requirements and operating economics.

04

Transition Pathways

Alternative routes showing how technologies and interventions combine over time.

05

Asset & Infrastructure Plan

Critical kiln, electrical, fuel, CO₂ and site dependencies required for deployment.

06

Investment Roadmap

A phased programme connecting opportunities, asset cycles, capital and major decision points.

Integrated cement production facility representing a 2040 transition project

CEMENT & LIME IN PRACTICE

Building a 2040 transition roadmapfor an integrated cement producer.

Terravia assessed four production sites to develop a portfolio-wide decarbonisation pathway spanning efficiency, alternative fuels, clinker reduction, electrification and carbon capture.

The work aligned emissions opportunities with kiln lifecycles, infrastructure requirements and future capital decisions.

Production sites
4
Technology pathways
5
Reduction potential mapped
72%
Transition horizon
2040

WORK DELIVERED

  • Plant emissions baselines
  • Abatement opportunity assessment
  • Alternative-fuel scenarios
  • Clinker and material pathways
  • Electrification assessment
  • Carbon-capture readiness
  • Portfolio investment roadmap
View project

HOW WE SUPPORT THE SECTOR

Strategy throughto investment.

Decarbonisation Strategy

Define the portfolio of interventions and long-term pathway required to reach deep emissions reductions.

Explore Decarbonisation Strategy

Technology & Economics

Compare alternative fuels, electrification, carbon capture and other technologies on a consistent technical and economic basis.

Explore Technology & Economics

Investment Roadmaps

Align major interventions with kiln cycles, infrastructure availability and capital priorities.

Explore Investment Roadmaps

OTHER INDUSTRIES

Explore our work acrosshard-to-abate sectors.

Glass & Ceramics

High-temperature production and the transition toward electric, hybrid and alternative-fuel systems.

Explore Glass & Ceramics

Chemicals

Complex transitions spanning process energy, hydrogen, feedstocks and carbon management.

Explore Chemicals

Metals

Major production-route, energy-system and asset transformations across capital-intensive operations.

Explore Metals

START A CONVERSATION

Build a credible pathway beyond the kiln.

Whether you are defining a plant strategy, comparing technologies or preparing for the next major asset cycle, Terravia can help turn the complexity of cement and lime decarbonisation into a sequence of investable decisions.

Talk to our team