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Micro Cogeneration

Opportunities enabled:

CHP (Combined Heat and Power) units produce simultaneously heat and power from fuel gas, resulting in higher efficiency compared with separate provision of heat and power.
Micro Cogeneration CHP units in a wide range of small-scale applications both in public and private sectors, including schools, restaurants, nursing homes, health centers, offices, hotels and leisure centers, with a typical electrical power demand below 35 kW.
Efficiency is especially high in colder regions due to high demand for waste heat for heating or hot water supply.
In warmer regions, waste heat can be used as heat source for absorption type water cooler/heater, or desiccant regeneration.

Organisation providing the technology:
Ministry of Economy, Trade and Industry
Endorsing entity:

Ministry of Economy, Trade and Industry.


Energy saving: approx. 870 GJ/yr (LHV)
CO2 reduction: approx. 50 tCO2/yr
(25kW CHP plant, 70% capacity factor)
(compared to electricity generation by single gas turbine through grid, and heat by gas boiler)


Low calorific gas, such as biogas can be used.
Micro Cogeneration also can be installed to off-grid areas, resulting in increased accessibillity to energy.


High overall efficiency: approx. 85%
Generation efficiency: around 33.5%
Heat efficiency: around 51.5%

Succes factors and requirements:

Information on environmental regulation (e.g. air pollutants, GHG emission)

Investments required:



5 - 10 months to deliver

Countries where implemented:
United Kingdom

Ministry of Economy,Trade and Industry,JAPAN

Technology owners:

Ministry of Economy, Trade and Industry.