Arizona Public Service (APS) announced Wednesday that rather than rebuild miles of electricity transmission lines, it will install two battery storage systems totalling 8MWh in rural Punkin Center, Arizona — making it one of the first electricity companies in the US to utilise batteries instead of traditional infrastructure.

Founder and CEO Paul Nahi last night announced his resignation from Enphase, the PV microinverter maker and energy management specialist, which also makes its own AC Battery for energy storage.

Powin Energy will provide 2.4MWh of energy storage systems across seven sites in Hawaii.

Developer Deepwater Wind has applied to build a 144MW offshore wind farm, coupled with 40MWh of battery-based energy storage from Tesla, off the coast of Massachusetts.

Tesla’s senior director of battery technology since 2006 has quit the company seeking pastures new, a company spokeswoman confirmed this morning.

Ideal Power, the US company best known for its power conversion systems for energy storage, has announced two recent project orders totalling 1.6MW in northern Texas and in California.

Energy storage manufacturer Go Electric has won a contract worth US$1.7 million to provide a 1MW/1MWh battery storage system for the US Army.

The amount of energy storage investment that came from VC (venture capital) funding more than doubled in the first half of 2017 compared to last year, a new report has found.

Aquion Energy, maker of energy storage batteries and whole systems based on a novel electrolyte with a chemical composition similar to saltwater, is back in business.

Despite a bill to create a rebate programme for energy storage systems purchased in California being dropped from a recent round of legislative decision-making, the state’s industry still has a “bright future”, commentators have said.