One analyst has predicted that 12,500 residential PV storage systems could be installed in Germany in 2015, more than the total number of systems installed with support from a government scheme in its first two years.

A large-scale storage system co-located at a German solar farm by the PV plant’s developer Belectric, has been given the green light to operate in the grid-balancing frequency response market.

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.

More details have emerged on inverters for Tesla’s new home battery system, to be made by Fronius and SolarEdge, while the EV-maker’s energy storage will be installed at demonstration and commercial projects for US utility Edison International.

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.

A Japanese utility which last year temporarily suspended new grid applications for large-scale solar, sparking a wave of similar suspensions by other utilities, will install a huge battery project aimed at integrating a higher capacity of renewable energy generation.

An academic based in north east England has called on the UK government to give energy storage “its own asset class with accompanying rules for appropriate regulatory treatment” as well as investing in the technology in order to enable future energy bill savings.

Con Edison Development has purchased an 8MWh battery system from GE for installation in Central Valley, California.

PV Tech Storage interviews John Jung of Greensmith, an energy storage system and software provider which claims to have been involved with one third of all storage deployed in the US last year. Jung discusses ‘killer apps’, opening up new business models in new markets, software and battery agnosticism.

The use of energy storage to increase renewables integration and provide stability to the grid requires the removal of regulatory barriers, rather than increased direct funding, according to one expert on the German market.