US utility Duke Energy has teamed up with battery provider LG Chem and storage software provider Greensmith to build a 2MW lithium-ion battery-based energy storage system in Ohio.

The International Renewable Energy Agency (IRENA) is set to launch a technology roadmap for electricity storage at the solar industry conference and exhibition Intersolar Europe next month. IRENA technology roadmap analyst Ruud Kempener spoke to Andy Colthorpe about the project.

Invenergy has brought a 31.5MW energy storage facility online to provide frequency regulation for the grid, near to 230MW of renewable energy generation assets.

France’s government has launched a tender for 50MW of projects combining solar power with energy storage systems on Corsica and its overseas islands territories.

Tesla’s grand entrance to the stationary storage market has been (largely) welcomed but question marks remain over the company’s business model. Andy Colthorpe gauges the latest reaction and explores the options facing Elon Musk.

Tesla reported losses of around US$0.36 per share in its quarterly earnings announcement yesterday, despite a flurry of activity around its stationary storage launch last week – yet the company still outperformed the expectations of the investment community.

Tesla’s Powerwall home energy storage system will join the US market at a “remarkably low price”, according to one analyst PV Tech has spoken to following the announcement from Silicon Valley last night.

AES Energy Storage has revealed details of its current project pipeline including its first deployments in Europe and expansions in Chile and California.

One firm exploring the possibilities of contributing to grid stability by installing energy storage at solar farms is German PV plant technology provider Belectric. The company will install two large-scale energy storage projects in the UK and connected an energy storage system at a large-scale solar power plant in Germany late last year. The system at Alt Daber is the first such installation in Europe to operate on the primary operating reserve market. Andy Colthorpe interviewed Belectric’s UK managing director Duncan Bott and Tim Mueller, chief executive of Belectric’s solar research and innovation subsidiary, Adensis, about the Alt Daber project earlier this year.

Energy storage start-up Stem says it sees “strong opportunity” for expansion of its business in Australia, Japan and the EU, in the week when the company closed a US$12 million funding round led by Japanese trading company Mitsui & Co.