Utility Hawaiian Electric has finalised a plan to completely use renewable resources by 2045, including mid-term goals of adding renewables generation and rooftop solar by 2030.
A large-scale pumped hydro energy storage project in Washington State has passed a key stage of approvals, while another in South Dakota has been dropped.
Wärtsilä has revealed details of fire testing its large-scale battery storage product was put through, which the company claimed went beyond commonly accepted requirements.
Energy optimisation software provider Peak Power has received US$35 million investment, while startup Financial Machines has launched its own platform, with both targeting the US energy storage market.
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.