The world of electricity is changing, driven by climate and energy policy as well as geopolitics. All changes in the electricity market emphasise the importance of flexible, renewable and domestic electricity production, well packed with the storage system technology.
Today, hydropower is superior in generating frequency-controlled reserves, and by combining the strengths of two different technologies, the whole is greater than the sum of its parts. The current focus is on improvements of the hydropower plant efficiency by using supercapacitors on short-time and high-power output storages.