• Commercial Combined Heat and Power (CHP)

    and Combined Cooling Heat and Power (CCHP)

    Amid volatile energy prices, many commercial organisations are saving increasingly higher amounts on their energy costs

    with Combined Heat and Power (CHP cogeneration) and Combined Cooling Heat and Power (CCHP trigeneration) systems.

  • Combined Heat and Power Systems (CHP) can play a valuable role in supporting businesses deliver a sustainable, secure, and flexible energy solution.

    When commercial scale operations are planning the building of new facilities or improvements to existing, they should consider cogeneration CHP or trigeneration CCHP. For some industries quadgeneration CHP may be more applicable. Read below for an overview which should address some frequently asked questions.




    Combined Heat and Power (CHP) or Cogeneration (Cogen) is a well-established technology that generates simultaneous electricity and heat from a fuel input.


    Cogeneration can save up to 30% on primary energy costs when compared to the separate purchase of electricity from the electricity grid and gas for use in on-site boilers.


    CHP has been used for many years all over the globe across different industries in several forms (steam boilers and steam turbines, gas turbines, steam boilers and steam turbines, reciprocating engines and heat recovery systems). The systems used are generally determined by the available fuel source, market sector and scale.


    In the UK following the privatisation of British Gas in 1986 and the dash for gas in the 1990s, CHP in industry grew rapidly with the installation of gas turbines and steam boiler plants, and within the commercial sector and hospitals with the installation of gas engine plant. Today, due to the reduction in plant size and the requirements for greater operational flexibility gas engines CHP has become the leading technology of choice.


    With the drive towards a sustainability zero carbon economy all the major manufactures have biogas and biomethane green gas engine variants and are future proofing their technology to use hydrogen (mixed or pure).


    As a proven technology CHP can deliver generation efficiencies up to 95% utilising low carbon natural gas as a fuel source. As the gas grids become green, the carbon footprint of CHP will reduce. CHP can use zero-carbon fuels directly to deliver zero or a negative carbon output.




    Trigeneration, or combined cooling, heat and power (CCHP), is the simultaneous production of electricity, heat and cooling all from a single source. The heat and electricity are produced by the normal operation of the Combined Heat and Power (CHP) unit, and an absorption chiller is also added as a way of producing energy-efficient cooling from the heat output of the CHP.


    An absorption chiller is a refrigerator that uses a heat source to provide the energy needed to drive the cooling process. Absorption chillers do not have moving parts, as such there is little to no wear and tear on the technology and Operation and Maintenance costs are very low. In addition to this when considering it as part of a wider solution due to the technology the overall lifecycle costs are low. This makes it attractive on solutions whereby part or all the heat may not be required from the engine. Absorption chilling whilst beneficial should only be considered on applications whereby the hot water or steam demand is little or none and the cooling demand is consistent and high.





    A Quadgeneration plant is an advanced gas engine power configuration which, produces electricity, heat, and cooling, but also recovers carbon dioxide from engine exhaust gas. The carbon dioxide can be segregated to reduce emissions, or used in certain horticultural or manufacturing processes. Under the right conditions, a Quadgeneration system can help an organisation reduce its carbon footprint, cut utility costs, and ensure onsite power resilience.

  • Efficiency Benefits of Commercial Combined Heat and Power (CHP) systems

    CHP is a proven technology and can deliver generation efficiencies up to 95% due to the high energy utilisation of a single fuel input. The electricity produced can be used for on-site use and heat recovered from the process is used for steam and hot water. If there is an on-site requirement for cooling and CO2 utilisation, then Trigeneration or Quadgeneration application should be considered. More on these applications ...  

    Cooling Recovery

    Where sites have low demand for heat but require cooling, an absorption chiller alongside the CHP known as Combined Cooling, Heat and Power (CCHP) or Trigeneration can produce temperatures as low as -5 degrees Celsius to deliver air conditioning cooling and refrigeration. 

    Improved Energy-Efficiency

    Further power efficiencies are achieved because the cogenerated electricity and heat is produced and consumed on-site, avoiding the transmission and distribution losses of around 7.5% that occur in transporting electricity from remote generators to consumers.

    CO2 Recovery

    Quadgeneration is a highly advanced gas engine configuration by which the CO2 is captured from the generation process and cleaned via selective catalytic reduction technology to provide high grade CO2. In application, Quadgeneration can promote crop yield in horticultural greenhouses and put the fizz in carbonated drinks.

    Energy Resilience

    CHP systems provide additional energy resilience by operating in parallel or entirely independently from the grid in Island Mode operation in the event of a power cut or mains failure. Also, where grid connections are constrained, CHP can support Commercial and Industrial users to generate their own power on-site thus ensuring security of power supply.

  • Other benefits of a commercial CHP system investment

    Financial and Environmental Benefits of a Commercial Combined Heat and Power system (CHP) investment

  • Do contact us to arrange an informed discussion about a combined heat and power system for your commercial premises.

    Our qualified engineers have a wide knowledge of all types of heating installations. Our engineering project management team can assist with everything ranging from consultation to scoping, design and development, testing and deployment as well as servicing, maintenance and compliance agreement.