In this US news roundup, we have financing updates for GridStor, Arevon, and Primergy, related to energy storage projects in Texas, California, and Nevada, respectively.

Energy firm RWE added 2GW to its US operating capacity in 2025, bringing its total operational capacity to nearly 13GW across the country.

Developer Avantus has closed a financing package of over US$300 million for the 100MWac/130MWdc solar, 400MWh BESS Kitt Solar and Energy Storage Project in Pinal County, Arizona, US.

From Texas, US, Bimergen Energy has acquired eight BESS projects totalling 79.2MW. Meanwhile, Habitat Energy announced its first US co-located solar-plus-storage partnership with Birch Creek.

3.6GWh of solar-plus-storage developments have progressed in Australia this week, with Edify Energy partnering with DT Infrastructure and Flow Power acquiring a 60MW project.

Oregon-based utility company Portland General Electric has finalised agreements for more than 1,000MW of new renewable energy and BESS projects.

Experts at the ongoing Energy Storage Summit 2026 have cautioned against treating co-located storage as a “silver bullet” to prop up commercially underperforming solar assets.

D. E. Shaw Renewable Investments (DESRI) has signed a preferred equity investment in IPP Linea Energy’s 235MW/470MWh Duffy battery energy storage system (BESS) in Matagorda County, Texas.

According to the US trade association group, the Solar Energy Industries Association (SEIA), US battery energy storage system (BESS) deployments are set to increase to 70GWh in 2026.

Lightsource bp has sold a 1GW operational solar PV portfolio, with options to build 800MW of co-located battery storage, in Australia.