Senators in Maine are considering legislation to accelerate energy storage development, including a focus on who is allowed to own resources placed on transmission and distribution grids.

Battery OEM Rept Battero, part of metals firm Tsingshan Industry, has tied up with Energy Vault a few weeks after it agreed a smaller deal with Powin.

Sungrow has received a Certificate of Approval (COA) in New York City for its Powertitan battery storage solution, joining just a handful of other approved products on a list produced by the city’s fire department.

Developer BlueWave talked Energy-Storage.news through the opportunities for energy storage in ISO New England (ISO-NE), one of only a few markets where ancillary services are not part of the long-term value stack.

BMW has partnered with a California utility to test out vehicle-to-X technologies, while fellow carmaker Volvo has invested in a bi-directional charging solutions provider.

UK energy storage investor Gresham House and the clean energy arm of utility NextEra have moved forward with battery storage projects in California, US.

Samantha McGahan of Australian Vanadium on the electrolyte, which is the single most important material for making vanadium flow batteries.

Canadian Solar shipped just 18MWh of energy storage in the first three months of the year, while growing its contracted revenues for the segment to US$1.3 billion.

Another serving of news in brief from around the world in energy storage.

Oneida, which will mix long-term contracted revenues with merchant risk exposure in Ontario, Canada, has reached financial close.