Long-duration energy storage (LDES) may be in something of a ‘dot com’ moment, but grid operators cannot afford the ‘hiccup’ of any bubble bursting, a senior ISO manager said at Energy Storage Summit USA.

Developer Spearmint Energy has acquired a portfolio of battery energy storage system (BESS) projects totalling 900MW in the ERCOT, Texas market, set to come online in 2025.

A solar-plus-storage project has been commissioned in Saxony, Germany, the first in the state from the recent ‘innovation tenders’ to do so.

UK utility SSE has put £100 million (US$123 million) into its Coire Glas pumped hydro project in Scotland for pre-construction activities, but said that new policy is needed for it go to final investment decision (FID).

The first phase of a residential battery storage program in the US state of New Hampshire has met all its conditions and saved the utility “more than expected” after an initial 100 units were deployed.

Connecticut utilities Eversource, and UI and a quasi-state bank have together launched the next 100MW tranche of a programme aimed at incentivising 580MW of customer-sited energy storage projects.

The UAE should deploy 300MW/300MWh of battery energy storage system (BESS) capacity in the next three years, according to one of its main utilities EWEC. 

A solar-plus-storage project combining 300kW of PV and a 2MWh battery energy storage system (BESS) has been installed in the Polynesian archipelago nation of Tonga.

The Netherlands needs 10GW of battery storage by 2030 and, while the market is being held back by onerous grid fees, developers like Lion Storage are working on deploying multi-hundred megawatt systems.

Inverter supplier Sungrow and developer Constantine Energy Storage are partnering on 825MWh of BESS projects in the UK, including two with discharge durations of nearly three hours.