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Greater possibilities in the electricity grid

The consumption on the Danish electricity grid varies considerably. The same applies to the production of power and thereby the electricity prices. However, by using groups of micro combined heat and power units, energy and construction companies could compensate for the considerable fluctuation.

Power can be converted into hydrogen for use in micro combined heat and power units with hydrogen-driven fuel cells. This means, for example, that power from wind turbines could be converted into hydrogen so that the power is stored. In this way, Denmark could store power for use r when the electricity prices are high.

This effect would be reinforced because individual home owners could sell any surplus power to other consumers over the electricity grid. The stored hydrogen means that the micro combined heat and power units could produce extra power during periods where electricity prices are high, which could be sent on to consumers who do not have micro combined heat and power.

In the Danish Micro Combined Heat and Power project, micro combined heat and power units will be demonstrated at the homes of actual consumers, and the possibility of sending electricity from the units out into the electricity grid will also be tested in this way.

If significant numbers of micro combined heat and power units are installed after the end of the Danish Micro Combined Heat and Power project, the effect of the units may be sufficiently great to prevent the need to expand the capacity of the major central power plants.

And if households themselves produced heat and electricity individually using micro combined heat and power units, the energy supply would become less dependent upon the expensive oil and thereby less vulnerable.

The sale of power and joint production with wind turbines will be coordinated via the Virtual Power Plant project, which is currently being developed in cooperation with DTU and is sponsored by Energinet.dk.