Industrial CO2 reduction

The transition to a low-carbon industry is well underway. Rising energy prices and stricter climate targets are driving companies to structurally reduce their CO2 emissions.

The challenge is choosing the right technologies without compromising the continuity of your production process. Callens Group supports industrial companies throughout the full decarbonization of their heat and energy supply, with technically feasible solutions that already deliver returns today and are ready for industry’s next developments.

Industrial CO2 reduction

When is investing in CO2 reduction the right move?

The energy transition gives industrial companies opportunities to make production more efficient, more sustainable, and more future-proof. But not every production process requires the same approach. The right investment choices depend on the available energy carriers, heat demand, residual heat potential, the age of the installations, and your company’s long-term strategy.

That is why the Callens Group does not start from one technology, but from an integrated analysis of your energy management. We identify where the greatest energy gains and CO2 reductions are to be made and create a roadmap with solutions that to your business goals and to a profitable energy transition to the maximum extent.

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Applications for CO2 reduction technologies

  • Structurally reducing CO2 emissions from industrial production processes.
  • Lower energy consumption and energy costs through more efficient heat generation.
  • Recovering and making maximum use of residual heat and other energy flows.
  • Replacing or modernizing outdated heat installations in line with the energy transition.
  • Reducing dependence on natural gas and other fossil fuels.
  • Preparing production processes for future climate targets and stricter CO2 regulations.
  • Investing in a future-proof energy supply with a focus on return, flexibility, and sustainability.
Vynova Tessenderlo ST waterstofbrander 30 T PRJ12171 2
Vynova Tessenderlo ST waterstofbrander 30 T PRJ12171 4
Katoen Natie Antwerpen ST 25 T Containerverwarming PRJ12707 24
Dardico Portugal 4 T 8bargeconomiser propaan 2
IMG 0039
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Konings Zonhoven Hybride voorzien 4 T 13 barg PRJ250153 4
Callens Vyncke EON Willebroek 2
Callens Evonik hijswerken stoomketel 13
Vynova Tessenderlo ST waterstofbrander 30 T PRJ12171 2
Vynova Tessenderlo ST waterstofbrander 30 T PRJ12171 4
Katoen Natie Antwerpen ST 25 T Containerverwarming PRJ12707 24
Dardico Portugal 4 T 8bargeconomiser propaan 2
IMG 0039
20230214 141732
Konings Zonhoven Hybride voorzien 4 T 13 barg PRJ250153 4
Callens Vyncke EON Willebroek 2
Callens Evonik hijswerken stoomketel 13
Vynova Tessenderlo ST waterstofbrander 30 T PRJ12171 2
Vynova Tessenderlo ST waterstofbrander 30 T PRJ12171 4
Katoen Natie Antwerpen ST 25 T Containerverwarming PRJ12707 24
Dardico Portugal 4 T 8bargeconomiser propaan 2
IMG 0039
20230214 141732
Konings Zonhoven Hybride voorzien 4 T 13 barg PRJ250153 4
Callens Vyncke EON Willebroek 2
Callens Evonik hijswerken stoomketel 13

Which type of CO2 reduction is the best-fit solution?

Your challenge

Possible solution

Electrification of production processes with industrial heat pumps, e-boilers, or hybrid systems.

Possible solution

Energy recovery for heat technologies to reuse residual heat within your process.

Possible solution

Energy recovery for air technologies to recover heat from extracted air.

Possible solution

Combined heat and power (CHP) for maximum energy efficiency.

Possible solution

Valorization of residual streams by reusing them as an energy source.

Possible solution

An integrated decarbonization strategy that combines different technologies for maximum CO₂ reduction.

There is no standard solution for lowering the CO2 emissions of an industrial production process. The most suitable technology will depend on your energy consumption, heat demand, existing installations, available energy carriers, and target CO2 reduction.

What’s more, the largest CO2 savings are rarely achieved with one single technology. In many industrial processes, the greatest added value comes from smartly combining several solutions. For example, a heat pump can be linked with heat recovery, CHP with residual heat utilization, or electrification with the valorization of residual streams.

That is why the Callens Group engineers always analyze your full production process. Based on that analysis, we determine which technology or combination of technologies delivers the greatest technical, environmental, and economic added value.

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SOLUTIONS

Callens Group offers multiple options for CO2 reduction

Industriele stoomketel elektrodeboiler

Electrification of production processes

Electrification is one of the most powerful ways to reduce industrial CO2 emissions. We integrate e-boilers, electric steam boilers, hybrid boilers, industrial heat pumps, and MVR systems, among other technologies.

More about electrification of production processes
Callens stoom vloeibare reststromen mixed fatty acids 3

Valorization of residual streams

Residual streams often still contain valuable energy. By using hydrogen, biogas, syngas, or other gaseous and liquid residual streams in a smart way, you can reduce both your energy consumption and your CO₂ emissions.

Valorization of residual streams
Warmtekrachtkoppeling WKK

Combined heat and power (CHP)

By generating heat and electricity at the same time, combined heat and power systems increase the overall efficiency of your energy supply and significantly reduce primary energy consumption.

Combined heat and power (CHP)
Callens stoomketel gasgestookt

Energy recovery for heat technologies

Residual heat from flue gases, steam, or process heat is reused within your production process. This allows you to get more efficiency out of every kilowatt consumed.

Energy recovery for heat technologies
Callens Lucht Extractie Mydibel Fresh Moeskroen PRJ240216 2

Energy recovery for air technologies

Ventilation and extraction systems often still contain usable energy as well. With tailored heat recovery, you can reduce both your energy consumption and your operating costs.

Energy recovery for air technologies
Mockup Magazine N1

Less CO2. More efficiency.
Discover which combination of technologies can make the biggest difference to your production.

Discuss your CO2 challenge

European legislation is accelerating industrial decarbonization

New directives and initiatives are encouraging companies to lower their CO2 emissions, use energy more efficiently, and prepare their production for a climate-neutral future.

For industrial companies, this means decarbonization is increasingly becoming a strategic choice to remain competitive and be ready for future obligations.

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European Green Deal

The European Green Deal sets out the European Union’s long-term vision for becoming climate-neutral by 2050. To reach that goal, industrial companies need to make their energy consumption more sustainable, gradually replace fossil fuels, and invest in more efficient production processes. As a result, CO2 reduction is becoming an essential part of a future-proof business strategy.

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Fit for 55

With the Fit for 55 package, Europe aims to reduce greenhouse gas emissions by at least 55 % by 2030 relative to the 1990 levels. The package includes several measures that encourage companies to invest faster in electrification, energy recovery, and other decarbonization technologies. Companies that invest today are better prepared for tomorrow’s climate targets.

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EU ETS evolves

Under the EU ETS, energy-intensive companies must surrender emission allowances for their CO2 emissions. As the number of free allowances continues to decrease and the CO2 price rises, the financial impact of emissions increases as well. Investing in energy efficiency and CO2 reduction helps companies limit these costs and strengthen their competitive position.

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Climate neutrality by 2050

The Clean Industrial Deal supports the modernization of European industry and encourages investment in low-carbon technologies. Electrification, heat recovery, the valorization of residual streams, and innovative emission reduction technologies are therefore becoming increasingly important in industrial investment projects. For companies, this creates opportunities to combine sustainability with higher energy efficiency and more resilient production.

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Stronger focus on industrial decarbonization

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Prepare your production process

Why choose industrial CO2 reduction from Callens Group?

Industrial CO2 reduction is not about one technology. It is about the right combination of solutions, which is why the Callens Group always starts with a thorough analysis of your production process. We combine industrial process expertise, engineering, and sustainability consulting into an integrated decarbonization strategy that lowers your CO2 emissions, increases your energy efficiency, and prepares your production for the challenges ahead.

Lower energy costs

Prepared for stricter regulations

Tailored to your installation

Working with the Callens Group means choosing a well-thought-out decarbonization strategy

The transition to a low-carbon industry requires choices that will affect your energy consumption, CO2 emissions, and competitiveness for years to come. That is why it is best to choose a partner that looks beyond one single technology. The Callens Group combines strategic consulting, industrial process expertise, engineering, and project execution in one integrated approach. This gives you a decarbonization strategy that is technically feasible and economically sound.

At the Callens Group, you have one point of contact for your entire CO2 reduction project: from the initial analysis through installation, including service and maintenance. This keeps the process clear and reduces the need to coordinate separately between different parties.

The Callens Group is not tied to one brand, manufacturer, or technology. This allows us to select, for each project, the combination of technologies that offers the greatest technical and economic added value. Our engineers take energy prices, grid capacity, emission targets, residual heat potential, available energy carriers, and total cost of ownership into account. The result is a solution that suits your production environment and your sustainability ambitions to perfection.

With more than 120 service and maintenance specialists, the Callens Group has one of the largest service teams on the market. Preventive maintenance, interventions, remote monitoring, and an extensive spare parts inventory help keep your CO2 reduction technologies available to the maximum and reduce unplanned downtime to a minimum.

The Department of Technology is the Callens Group’s innovation center. This is where new developments in CO2 reduction are assessed for their technical feasibility and added value in industrial applications. Only proven technologies ultimately make their way to our customers.

With 13 locations across Belgium, the Netherlands, and France, we combine the advantages of an international group with the proximity of local teams. This allows us to respond quickly, stay close to the project, and support our customers over the long term.

Ready to structurally reduce your CO₂ emissions?

Do you want to electrify the heat supply for your production process, make better use of residual heat, or develop a complete decarbonization strategy? Our specialists will be happy to help you determine the most suitable approach.

Contact us
Bekijk productie-energie niet als een vervelende kost. Ze brengt gouden kansen om uw ecologische voetafdruk naar beneden te brengen.
Kris Stappers
CSO van de Callens Group
The greatest opportunities for growth lie outside your comfort zone. That’s why we’ve moved away from the idea of ‘this is your role, and these are the boundaries you need to stay within.’
“A high-performing industrial heating installation starts with understanding how heat moves through your building: from airflows and ceiling heights to process heat, work zones, and recovery opportunities. Only then can you choose the best combination of technologies.”

CO2 reduction projects

Callens warmte transport 2
Thermal technology Steam boilers Energy recovery for thermal technology +1

Heated transport from A to B

Net capacity1300 kW
Work rate steam boiler1.7 tons/hour
Design pressure pipes10 bars
Recovered capacity83 kW
La Lorraine CV 850 k W PRJ210133 10
Thermal technology Hot water & industrial central heating boilers Gas-fired +1

Heat excites taste buds in industrial bakery

Capacity850 kW
Efficiency95,5%
Poppies Bakeries CV Restwarmte Warmtewisselaar Buffervat PRJ250188 10
Thermal technology CO2 reduction Energy recovery for thermal technology

Waste heat from baking ovens keeps buffer tank temperature stable

Capacity per condenser43 kW
Exhaust airflow1,200 m³/h

Questions?
We have the answers.

Several technologies can be used to decarbonize industrial processes. The best-fit solution depends on your installations, energy consumption, and business objectives. The Callens Group combines technologies such as electrification, combined heat and power systems, energy recovery, and valorization of residual streams into one integrated solution.

A successful decarbonization strategy starts with an analysis of the entire production process. Based on that analysis, our specialists determine which combination of technologies will have the greatest impact on CO2 emissions, energy consumption, and business performance. This way, you invest first in the solutions that are both technically feasible and economically sound.
Curious about the CO2 reduction opportunities for your company? Our experts will be happy to think along with you.

Not necessarily. Electrification is an interesting technology for many applications, but it is not suitable for every production process. Depending on your situation, combined heat and power, energy recovery, or valorization of residual streams may offer a better solution. That is why the Callens Group always takes a technology-independent approach. Talk to our experts about it.

That depends on several factors, such as energy consumption, the chosen technology, investment cost, energy prices, and any available subsidies. That is why we develop a technical and economic business case for every project, so that you can make a well-founded investment decision.

National and European support measures are available for several decarbonization technologies. Which subsidies apply will depend on your project and the selected technology. During the analysis, our specialists assess which opportunities may be relevant to your investment.

To meet the 2030 and 2050 European climate targets, it is important to take action now. Transitioning takes time, especially if you want to invest in a targeted way and also expect a return. Start now with a CO2 roadmap to compare your options with your needs, so you know which direction to take, and which phased investments to make.

That will depend on the condition of your boiler room and on the sustainability path you still need to complete. Sometimes, small interventions are enough to lower your CO2 emissions, but we also need to assess whether they will be sufficient in the future. In other cases, a new boiler room will deliver a better return, both economically and environmentally.
Contact our experts for a thorough analysis of your boiler room.