Ben Lincoln, energy expert at intellectual property law firm Potter Clarkson, looks at patent filing activity in energy storage technologies outside the world of electrochemical batteries.

Closed-loop pumped hydro energy storage (PHES) has fewer emissions associated with its development, construction and use than other leading options for large-scale energy storage.

Iron-air battery firm Form Energy has received a US$12 million grant from the state of New York for a 1GWh long-duration energy storage project, whilst Ecolectro Inc, PolyJoule Inc and Urban Electric Power received smaller amounts.

The domestic manufacturing capabilities of US flow battery providers ESS Inc and Stryten Energy have been celebrated by senior state politicians in Oregon and Georgia respectively.

The four most high-profile energy storage system (ESS) companies that listed via SPAC mergers – Eos, Energy Vault, ESS Inc and Stem – have seen their share prices fall by an average of 80% since going public.

Startup Kyoto Group has begun operational testing of a 4MW molten salt-based power-to-heat system in Denmark.

Kraftblock, a thermal energy storage startup based in Germany, and Australia’s MGA Thermal have secured funding to accelerate their technologies’ scale-up and commercialisation.

ESS Inc has improved ability to recognise revenues and reduced direct costs of production of its flagship product by 30% in Q2 2023.

US DOE Loan Programs Office has invited Nostromo into due diligence and terms sheet negotiations for a loan worth up to US$176 million.

Zinc battery firm Eos Energy Enterprises has responded to a short seller note which saw its share price nearly halve on Thursday last week.