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Less CO2 from homes

If Denmark's 700,000 natural gas and oil-fired boilers were replaced with micro combined heat and power units, CO2 emissions could be reduced by more than 700,000 tonnes per year.

This corresponds to 8 per cent of Denmark's declared aim of reducing the CO2 emissions by 20 per cent by 2020.

Denmark is world-renowned for its district heating system, which ensures efficient domestic energy for more than half of the Danish population. The district heating plants co-generate both electricity and heat, which uses approximately 30% less fuel than the separate production of heat and energy. However, district heating does not reach all consumers.

About 700,000 Danish households are heated on an individual basis. A large number of households are heated by district heating often generated as a result of cogeneration. Abroad homes are often heated by power plants where the heat generated by electricity production goes to waste instead of being reused to heat homes and businesses.

In contrast to natural gas and oil-fired boilers and foreign power plants, micro combined heat and power units in fuel cells produce both power and heat. These units therefore utilise fuel more efficiently, which leads to lower CO2 emissions.

And in the future, when the units are run on hydrogen produced via sustainable energy such as wind power, micro power and heat will become fully CO2 neutral.