Harvard study questions widespread support for bulk energy storage
Marchlyn Mawr Reservoir (Pic by Hefin Owen, Flickr)
The high cost and technical immaturity of bulk electricity storage systems (BES), such as pumped hydro storage (PHS), batteries, liquid air, flywheels and hydrogen, have often been mentioned as major challenges to the increased penetration of renewable energy technologies, such as wind power and solar energy. However, is deployment of these technologies really necessary at the current stage of worldwide renewable energy deployment? A new study conducted by scientists at Harvard University has found this assumption to be seriously flawed and that a large amount of energy storage capacity is not necessarily a pre-requisite for deployment of renewables in order to achieve reductions in greenhouse gas emissions.