Water management in a closed hydropower system
Is the number of AA batteries that would be needed to store all the energy in Landsvirkjun’s reservoirs.
Landsvirkjun generates all its electricity from renewable energy resources such as water, geothermal energy and wind energy. The natural water cycle is utilised for energy generation and production is therefore dependent on weather conditions at any given time.
The hydropower system is set up in such a way that it accumulates glacial meltwater in the reservoirs during the summer period and the water is then utilised over the winter period. Weather conditions in Iceland are unpredictable, whereas electricity usage remains stable throughout the year. The potential supply capability of the electricity network is based on water availability during ‘dry’ years which means that there is substantial spillover in an ‘average’ year.
Utilised catchment areas within Landsvirkjun’s operations
Landsvirkjun operates 13 hydropower stations within 5 operational areas all over the country. The figure shows the percentage of hydro energy according to water catchment areas.