Two engineers surveying a Combined Heat and Power CHP unit
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Combined Heat and Power (CHP)

Amid volatile power prices, many organisations are saving up to 40% on their energy costs with Combined Heat and Power (CHP), also known as cogeneration.

Do you have a Combined Heat and Power project in mind?

Are you a large organisation that consumes over 500,000 kWh of electricity and is planning to start a new energy project in the next 12 months?

As a leading Combined Heat and Power supplier and operator, we can help you reach your cost and carbon-saving goals. Tell us about your project by completing our simple form to get the conversation started.

up to

energy cost savings vs traditional heating and supply, with a 1-3 year typical payback period


efficiency ratings vs conventional heating and energy supply

more than
35 YRS

Combined Heat and Power experience across sectors such as Healthcare and Manufacturing


of CHP units installed by us worldwide

Get ready for a low carbon future with hydrogen-ready CHP units

We offer CHP units capable of running on up to 100% hydrogen - helping you to get ready for a low carbon future. Our expert CHP technicians can help you switch whenever you're ready - so you can adapt your setup to align with the changing needs of your business.

Why choose Centrica Business Solutions for your CHP unit?

  • Harness renewable energy and low carbon with up to 100% hydrogen fuel available for your CHP
  • Be supported with UK's largest fleet of CHP technicians and next-day delivery of spare parts worth over £2.5m
  • No upfront capital needed with our range of financing options, including a Flexible Term Agreement for CHP
  • Identify ways to accelerate to net zero when combined with our 7-step pathway
  • Visualise your CHP unit for planning and designing stages with our 3D laser scanning - watch video

Save energy by creating your own with Combined Heat and Power

Watch our video to see how CHP units can produce electricity and heat for your business at the same time

Understand how you can drive energy efficiency and benefit from reduced costs and carbon emissions.

Available CHP engines
We offer CHP units fuelled by hydrogen, natural gas, biogas, or liquefied petroleum gas (LPG). Our units can be built around a range of different small, medium and large-scale engines, including these options:
Agenitor CHP unit

We can provide agenitor engines from 2G, helping you to integrate hydrogen, biogas or natural gas CHP into your energy estate.

Avus CHP unit

We can offer avus engines from 2G, giving your business flexibility across biogas and natural gas – with engines reaching up to 4,500kW.

G-box CHP unit

We can utilise g-box engines from 2G, with overall efficiency of over 100% – giving you a strong return on investment with LPG or natural gas.

Download our CHP guides
Cover of CHP brochure
CHP brochure
Register your details to download our brochure to learn how CHP can support your energy cost goals.
Cover of CHP design guide
CHP design guide
Complete the form to download our CHP Design Guide to learn more about designing and deploying Combined Heat and Power.
Cover of Economics of CHP
Economics of CHP guide
Complete our simple form to learn about the long-term savings you could make by investing in a CHP unit.

Combined Heat and Power benefits for your organisation

  • Lower your electricity costs by up to 40% and reduce reliance on the grid
  • Achieve a potential payback period of 1-2 years in some circumstances, or a typical payback of 2-3 years
  • Future-proof your energy with hydrogen-ready CHP engines
  • Reach efficiency rates in excess of 80% by using waste heat on-site
  • Gain budget stability through predictable electricity costs and accurate forecasting of operating expenses
  • Enhance site resilience and minimise the risk of operational failures
  • Stay compliant with assessment such as BREEAM and Part L regulations
Learn how our 35+ years of Operations & Maintenance (O&M) experience can keep your CHP unit running optimally
How does CHP work?

Combined Heat and Power systems convert a single fuel into both electricity and heat in a single process at the point of use.

Single fuel for power and heat

Providing almost continuous operation, a CHP engine requires only a single fuel to function, simplifying your infrastructure requirements.

Electricity production

The engine (coupled to an alternator) generates power, which is then converted into usable electricity to meet on-site energy demands.

Heat recovery

Simultaneously, heat is recovered from the engine exhaust, jacket and water/oil cooling circuit. The heat is then made available for redistribution on-site.

Next steps for your CHP system

We're with you every step of the way to ensure you get the most from Combined Heat and Power, from initial consultation to operating and maintaining your CHP plant.

Four stages to deploying and maintaining CHP

Speak to our Combined Heat and Power experts

Do you have a Combined Heat and Power project in mind? Contact our team of experts today to find out how you could save up to 40% on electricity with low-carbon heat and power.

Frequently asked questions about Combined Heat and Power

CHP, or Combined Heat and Power, is a solution which produces heat and power (electricity) onsite from a single fuel. This is also known as cogeneration, and can be part-powered by hydrogen as a low carbon solution. Some CHP units also generate chilled water, known as trigeneration.

CHP stands for Combined Heat and Power, an efficient method of generating heat and power onsite simultaneously.

CHP can reduce energy spend and reliance on the grid through onsite generation.

Some CHP units use natural gas, but many use other fuels. The Digest of UK Energy Statistics states that renewable fuels power around 15% of CHP capacity in the UK, and some are powered with green gas certifications. CHP is also already available with 20% blended hydrogen - and further tests are ongoing. This ranges from a 20-40% blend to 100% hydrogen engines, future-proofing CHP.

CHP captures heat produced in electricity production, such as from water cooling circuits. This can then be redistributed onsite, providing simultaneous heat and power production.

The advantages of Combined Heat and Power include up to 40% cost savings vs traditional heating and supply, an efficiency rating of over 80% by utilising heat onsite, and a range of available fuel options to drive your pathway to net zero. The disadvantages of Combined Heat and Power can include noise and space requirements, but our team can work with you to mitigate these based on your site’s unique needs.

To size a Combined Heat and Power (CHP) unit, our team will survey the unique needs of your site. We’ll use your gas and electricity usage data, as well as the physical requirements of your site, to identify the best possible unit size for your business.

In 2017, Centrica Business Solutions acquired ENER-G Cogen International Limited, also known as Energ or ENER-G Cogen. Ener-G’s CHP business now forms a part of Centrica Business Solutions and complements our existing capability in installing and managing sustainable energy solutions. As part of Centrica Business Solutions, customers can benefit from over 35 years’ experience as a global pioneer of modern CHP technology, across a range of sectors such as manufacturing and public sector organisations.

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