California has installed more than 21 GW of energy storage across the state, making it one of the largest battery fleets in the world, said the California Energy Commission. When Gov. Gavin Newsom took office in 2019, less than 700 MW of battery storage served the grid. The jump to 21,112 MW is an increase… The post California surpasses 21 GW of energy storage connected to grid appeared first on Solar Power World.

Sol-Ark today launched the MySolArk Installer App, a mobile application that helps professional solar installers commission, document, monitor and manage compatible Sol-Ark residential systems. Designed around the installer workflow, the app guides commissioning teams through system topology, connectivity, hardware validation, battery and grid settings, operating profiles and final verification. Multi-site visibility and shareable commissioning reports… The post Sol-Ark launches residential inverter commissioning app appeared first on Solar Power World.

Tickets are now available for the Solar Roots Party, taking place Oct. 30-Nov. 1, 2026, at the Ponderosa Hall-Nevada County Fairgrounds in Grass Valley, California, considered one of the birthplaces of the modern solar industry. As part of the three-day gathering, the feature-length documentary film “Solar Roots – The Pioneers of PV” will make its… The post Tickets now available for Solar Roots Party appeared first on Solar Power World.

The Trump administration has revealed the results of the Sec. 232 trade investigation on the polysilicon industry. Each imported solar component consisting of polysilicon — wafers, cells and finished panels — will have a 15% tariff, regardless of country of origin. Polysilicon-only imports will not have a 15% tariff. The tariffs will begin in 120… The post Sec. 232 polysilicon results: The price of all imported solar panels is going up appeared first on Solar Power World.

Solar panel manufacturer Heliene has permanently laid off 93 employees at its Mountain Iron, Minnesota, solar panel assembly facility, effective Aug. 5, 2026. The jobs are primarily solar panel assembly positions, although some human resources positions were included in the notice. Heliene confirmed to Solar Power World that 182 positions are still active in Mountain Iron.… The post Heliene lays off nearly 100 workers at Mountain Iron solar panel assembly facility appeared first on Solar Power World.

Washington, D.C.’s water district DC Water has completed a 1.8-MW solar installation on its Brentwood Reservoir property. Through the Solar for All program, the facility will provide utility bill savings to more than 500 income-qualified D.C. households and up to $3.8 million in lifetime electricity bill savings, advancing D.C.’s climate, clean energy and energy equity… The post Washington, D.C., water district installs 1.8-MW system through Solar for All program appeared first on Solar Power World.

Ørsted has reached commercial operations of the 500-MWh Old 300 Storage project in Needville, Texas. “Battery energy storage has played a large role in providing much needed power to ERCOT in times of tight supply and demand margins,” said Melissa Peterson, President of Ørsted Americas Onshore. “Achieving commercial operations at our Old 300 Storage project… The post Ørsted adds 500 MWh of Tesla BESS to ERCOT grid appeared first on Solar Power World.

Sodium-ion battery cell developer UNIGRID announced it would share its sodium chromium oxide (NCO) design with Syntropic Power to establish U.S. manufacturing. The two companies plan to deploy 1 GWh of NCO-based energy storage in 2027, initially with Syntropic’s Tenet residential system and the GridSpan system for large-scale applications. Syntropic will design, manufacture and deploy… The post UNIGRID, Syntropic Power are planning US sodium-ion battery manufacturing appeared first on Solar Power World.

Virtual power plant (VPP) company Base Power announced it has raised $1 billion in Series D financing and will now get involved in residential battery manufacturing. The home energy storage system, Base Core, will be produced in Austin, Texas. Base Core is a 39.2-kWh lithium-iron phosphate (LFP) battery system with a 12-year lifetime. It has… The post Base Power begins manufacturing 39.2-kWh residential battery in Texas appeared first on Solar Power World.

ConnectDER has announced the full integration and field availability of its IslandDER Meter Socket Adapter with the SolarEdge Nexis home energy system. SolarEdge has made IslandDER a standard component of SolarEdge Nexis installations requiring home backup. The SolarEdge-specific model, the SolarEdge Nexis IslandDER, acts as the system’s native microgrid interconnect device (MID) — sensing a… The post SolarEdge makes ConnectDER meter collar a standard component of new Nexis system appeared first on Solar Power World.

Lithium battery company Electrovaya has launched a new battery energy storage platform, the ElvaPulse 1500. Ideally designed for the AI and data center market, the system could also be used as stationary energy storage. ElvaPulse 1500 is the first product introduced under Electrovaya’s new ElvaPulse stationary energy storage portfolio. This product leverages the proprietary ceramic… The post Electrovaya BESS can discharge full capacity in 30 minutes, perfect for data centers appeared first on Solar Power World.

Wisconsin and Michigan electric utility We Energies announced it has begun construction on three energy projects in Wisconsin to support the grid during peak demand. The new projects are: Darien Battery Storage: a 75-MW energy storage facility in Walworth County. Construction broke ground in July. The facility is part of the Darien Solar and Battery… The post We Energies breaks ground on three major energy projects in Wisconsin appeared first on Solar Power World.