HD Renewable Energy and utility Tokyo Gas signed a deal for two large-scale projects in another busy week for Japan’s growing battery storage market.

Building BESS is complicated, with myriad considerations around supplier contracts, site acceptance tests, data analysis, interface between different contractors.

The Puerto Rico Energy Bureau (PREB) has approved a motion from Tesla, residential solar and battery installer Sunrun, and residential solar installer SunStrong Management to auto-enroll participants in an emergency capacity resource programme.

Czech investment group Wood & Company (Wood & Co) has hired construction and optimisation partners for large-scale battery storage projects in Finland and Sweden.

Industry leaders warned that “unfettered optimism” regarding battery degradation is hitting a wall of operational reality.

Informa Markets is launching the inaugural Battery Asset Management Summit, Canada (BAM Canada).

The Minnesota Public Utilities Commission (MPUC) has approved a 200MW expansion of utility Xcel Energy’s Capacity*Connect virtual power plant (VPP) programme.

Dutch TSO TenneT has signed a contract with a developer for a large-scale BESS which will help to relieve grid congestion, possibly enabling the quicker deployment of renewables in the Netherlands.

Gridstor and Axpo have executed an energy storage revenue swap agreement for a 220MW/440MWh BESS in Galveston County, Texas.

FlexGen has acquired CES, which has to date commissioned more than 15GWh of battery energy storage system (BESS) projects.