Energy storage is all the rage, as costs fall and the use of variable renewables expands. The boom started back in 2016, when grid linked battery storage grew by 50% to 1.7GW globally, according to IRENA. By then there was 1.6 GW of electro-mechanical storage, 3.1GW of heat storage, but all of this dwarfed by the 150GW of pumped hydro. The boom has continued since, for Lithium Ion batteries especially, with Tesla making much of the running, and some see that as continuing, with 55% growth per annum expected up to 2022. However, while the field is full of innovation at present, pumped hydro storage continues to dominate, although that has limits and there are few other major options as yet for large scale grid balancing, especially for longer-term energy storage.
Renew Extra 1st Sept 2018 read more »