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Fuel sources

Power stations in Ireland are either
hydro-electric or peat fired with one burning fossil. UK power stations mostly run on fossil fuels, with some using biomass such as wood or rubbish (waste materials).
Biomass is biological material from living or recently living things. It is a renewable energy source, which means that once it is used up it can be replaced, unlike fossil fuels which take millions of years to create.

Some fuels are easier to use in a power station than others. Fossil-fuels (such as coal, gas and oil) are popular power station fuels as they burn reliably and more can be added to boilers when extra energy is required. They can quickly generate more electricity to put into the national grid when there is a sudden increase in demand. The same is true of biomass.

 See inside a power station