Britain could be the best “scale-up” market in the world when it comes to deploying energy storage batteries, leaning on years of experience in solar PV, the chief of one manufacturer has said.

A dozen San Diego schools in the Poway district of San Diego, California, have taken energy storage systems from Green Charge, with 6.3MWh cumulative capacity.

German firm talks up its flywheel energy storage system as a solution for wind farms and public transport.

German manufacturer Siemens has been recruited by Italian energy utility Enel to provide battery storage to the small Mediterranean island of Ventotene.

New York City expands its target for solar power capacity, and sets new goal for energy storage, as mayor Bill de Blasio claims capacity from renewables has quadrupled on his watch.

US state of Massachusetts recommends large-scale energy storage installations, sweeping policy changes, and wide-ranging pilot programme, a month after it proposes storage procurement targets for local utilities.

SolarCity purchase under threat as Tesla shareholders file four lawsuits in two weeks, alleging the company’s board breached fiduciary duties

US government to fund 16 research projects into how new technology, specifically solid ion conductors, can overcome the limitations of current battery and fuel cell products.

Renewable Energy Systems ranks alongside US firm AES at the top of a new leader-board of energy storage systems integrators; its two new National Grid contracts will see it top the table, it says.

Car marker General Motors says it will underpin its 2015 drive for 100% reliance on renewable energy sources with its expertise in energy storage, and its expansion of solar and wind installations.