Today’s renewable energy news includes updates on Eos Energy, WPD, Merus Power, India’s Battery Storage, among others.
Eos Starts Production at Second Pennsylvania Long-Duration Battery Factory
US-based energy storage manufacturer Eos Energy Enterprises has commenced commercial production at its second battery manufacturing facility in Pennsylvania, significantly expanding domestic long-duration energy storage (LDES) production capacity. The new Battery Line 2, located at the company’s Thorn Hill facility in Marshall Township, successfully completed site acceptance testing and has entered full commercial operation. The facility produces Eos’ zinc-based Z3 battery systems, a non-lithium alternative designed for long-duration energy storage applications supporting renewable energy integration and grid reliability. Battery Line 2 incorporates advanced automation, single-piece flow manufacturing, and enhanced production efficiency, reducing raw material travel distances by 86% and shortening production line length by 40% compared to the company’s first production line. With the addition of the new facility, Eos expects to increase its annual manufacturing capacity to 4 GWh by the end of 2026. The expansion is backed by a growing multi-gigawatt-hour project pipeline in the US and international markets, reinforcing Eos’ position in the rapidly expanding long-duration energy storage sector.
WPD Selects Merus Power for First Battery Energy Storage Project in Finland
German renewable energy developer WPD has selected Finnish technology company Merus Power to supply and deliver its first battery energy storage system (BESS) project in Finland. The project marks WPD’s entry into the Finnish energy storage market and represents an important step in the company’s strategy to expand beyond renewable power generation into grid flexibility solutions. Merus Power will provide a battery storage facility with a power capacity of 40 MW and an energy storage capacity of 40 MWh. The system will be connected to Finland’s electricity grid and is designed to support frequency regulation, grid balancing, and the integration of increasing volumes of renewable energy. Construction is expected to begin in 2026, with commercial operations targeted for 2027. The project highlights the growing importance of battery storage in the Nordic energy market, where rapid growth in wind and solar generation is driving demand for flexible energy infrastructure. For WPD, the investment strengthens its position in Finland’s renewable energy sector, while Merus Power continues to expand its portfolio of utility-scale energy storage projects across Europe.
India’s Battery Storage Additions Surge Tenfold to 4.6 GWh in Q1 2026
India added 4.6 GWh of battery energy storage capacity in the first quarter of 2026, marking a tenfold increase from the 442.7 MWh installed in the previous quarter, according to a report by Mercom India Research. The sharp growth highlights the accelerating role of energy storage in supporting the country’s renewable energy expansion and grid modernization efforts. India’s cumulative battery storage capacity reached 5.9 GWh by the end of March 2026, with standalone battery projects accounting for 73% of the total. Rajasthan and Gujarat emerged as the leading states, representing 42% and 25% of installed storage capacity, respectively. The country’s energy storage development pipeline has now grown to 69 GWh, while agencies issued tenders totaling 18 GW and auctioned more than 4 GW of standalone storage projects during the quarter. The rapid deployment has been driven by supportive government policies, including viability gap funding programmes and mandatory storage requirements for new renewable energy projects. Industry experts view battery storage as a critical component of India’s strategy to integrate larger volumes of solar and wind power, enhance grid reliability, and achieve its long-term clean energy targets.
FAHEEMA P
