Pumped hydro storage, in contrast, could provide electricity only for several hours. Moreover, synthetic production of natural gas allows countries that do not have mountainous- enough regions for large pumped hydro storage to build their own storage capacities domestically.
Germany, halimbawa, maaaring iimbak ang katumbas ng demand na koryente sa buong bansa sa loob ng ilang linggo . Pumped hydro imbakan, sa kabilang banda, ay maaaring magbigay ng koryente para lamang sa ilang oras.