Long duration energy storage (LDES) technologies may have a difficult time competing with lithium-ion over the next decade as the latter’s cost-competitiveness at longer durations increases, possibly even to 24 hours, according to Haresh Kamath, Electric Power Research Institute (EPRI).

California’s government has issued a roadmap for the US state to achieve its long-term goal of 100% clean energy, while an immediate State of Emergency has been declared over concerns the electric system will struggle under heat waves this summer.