Germany’s Federal Network Agency has announced results of its September 2026 innovation and biomethane auction. The innovation auction for solar photovoltaic combined with energy storage was significantly oversubscribed, attracting 53 bids totalling 678 MW against the 475 MW offered. Of these, 32 bids totalling 480 MW were awarded, with prices ranging from 4.50-5.40 ct per kWh and a volume-weighted average of 5.14 ct per kWh.
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New York State Energy Research and Development Authority (NYSERDA) has awarded contracts to eight battery storage projects and 13 large-scale renewable energy projects. Together, these projects represent 1.7 GW of new capacity and over $3.7 billion in private investment. BESS projects will add 950 MW of capacity, with durations ranging from four to eight hours while the 13 renewable energy projects will add over 719 MW of capacity and comprise solar, onshore wind, and hydropower. The projects are expected to be operational by the end of 2030.
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ESR has signed an agreement to acquire 100 per cent of Aquila Clean Energy APAC from Aquila Group. Aquila Clean Energy APAC develops, owns and operates solar, battery storage and wind projects across Asia-Pacific. The platform has a 1.6 GW portfolio of operational, under-construction and advanced-development assets across Australia, New Zealand, South Korea, Japan and Taiwan.
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Greenvolt Group, through Greenvolt Power, has commenced construction of the Siedlce battery energy storage system (BESS) in Poland. The project has an installed capacity of 600 MW/2.4 GWh and is part of Greenvolt’s 4.6 GW probability-weighted BESS pipeline, including around 2.4 GW in Poland. Commercial operations for the project are targeted by the end of 2027.
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Energy Vault has acquired over 2.3 GW portfolio of 15 battery energy storage system (BESS) development projects from Goshe Energy Storage in US. The portfolio is anchored by two ready-to-build projects of 150 MW and 200 MW, totalling 350 MW. The projects are expected to commence operations in the first quarter of 2028. Furthermore, the projects are expected to generate approximately $30 million in combined annual run-rate EBITDA.
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Taaleri Energia, through its SolarWind III Fund and KJK Fund III, has invested in the Raudsepa battery energy storage system (BESS) located in Estonia. The project has an installed capacity of 192 MW/420 MWh. The project construction will commence in September 2026 and will reach full operation by November 2027. Furthermore, the project, developed by Evecon and Corsica Sole, will feature LG Energy Solution batteries and Power Electronics inverters.
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GridStor has closed a $220 million financing agreement for the development of the White Tank battery energy storage system (BESS) in Maricopa County, Arizona. The project has an installed capacity of 100 MW/400 MWh. The project financing comprises tax equity bridge, construction and term debt with participation from ING Capital, KeyBank and Zions Capital Markets. Furthermore, the project will operate under a 20-year tolling agreement with Arizona Public Service and is expected to be commissioned in the first half of 2027.
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Actis has launched Yeltica Energy, a greenfield renewable energy platform in Mexico. The platform targets more than 2 GW of solar, wind and battery energy storage system (BESS) capacity. The platform is anchored by three solar-plus-storage projects awarded under Mexico’s first Mixed Investment Tender by the Comisión Federal de Electricidad (CFE). These projects together comprise approximately 330 MWp of solar photovoltaic and 255 MWh of BESS.
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Covenergo and Delta Capacity have collaborated to deliver the standalone AKKU One battery energy storage system (BESS) project in Lapinlahti, Finland. The project has an installed capacity of 125 MW/300 MWh. The project is expected to be commissioned by the fourth quarter of 2027, with project construction under way. The project was acquired as a ready-to-build asset from Helios Nordic Energy with Covenergo holding the majority stake in the project.
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Arevon Energy has made construction progress on the Cormorant battery energy storage system (BESS) project in Daly City, California. The project has an installed capacity of 250 MW/1,000 MWh and is expected to commence operations in 2027. The project will use lithium iron phosphate battery technology and can supply power to 321,000 homes for up to a four hour duration.
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Vattenfall has taken the final investment decision (FID) to build a standalone battery energy storage system (BESS) project at the former Brunsbüttel nuclear power plant site in Germany. The project will have an installed capacity of 254 MW/1,000 MWh and will be connected to the 50Hertz 380 kV transmission grid. The project, expected to be operational by the end of 2028, will nearly double Vattenfall’s BESS capacity.
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Invenergy and HA Sustainable Infrastructure Capital, Inc. (HASI) have closed a strategic equity partnership to support a 2.7 GW renewable portfolio of solar, solar-plus-storage and wind projects across the US. The portfolio comprises 10 projects spread across seven states: Arizona, New Mexico, Texas, Arkansas, Indiana, Ohio and New York, and six major US power markets.
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Qualitas Energy has signed an agreement to acquire Cero Generation’s European platform from Macquarie Group. Cero Generation, established by Macquarie in 2021, is an independent power producer focused on solar photovoltaic and battery energy storage system (BESS) projects. Cero Generation will continue operating under its existing brand as an independent Qualitas Energy portfolio company.
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BW ESS has acquired two standalone battery energy storage system (BESS) projects from Navacant in Spain. The projects, located in the Valencia region, have storage capacities of 99 MW and 27 MW, respectively. Together, the projects have a combined capacity of 126 MW/up to 675 MWh. Furthermore, the projects are expected to reach ready-to-build status in 2027 with commercial operations targeted for 2028.
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The Government of Niger has entered into a public-private partnership (PPP) with Niger Electricity Power Production (NEPP) to develop a 200 MW solar photovoltaic plant with battery energy storage system (BESS) in Niamey. The project represents an investment of 126.1 billion CFA francs. Project construction and financial mobilisation are expected to take approximately 24 months.
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Sodium-ion batteries, as a solution for grid-scale storage demands, have spent the better part of a decade described, roughly, as “promising.” It’s a word that’s covered for a lot of unfinished progress and has become somewhat of a warning sign to anyone in this industry trying to separate emerging technologies from commercially ready ones. The technology has moved beyond the stage where the primary questions are whether the chemistry works or whether it can be manufactured at scale. What’s changing quickly right now, though, is sodium-ion is being evaluated against the same practical criteria as other commercial storage technologies: performance, safety, manufacturability, supply-chain resilience, lifecycle economics, and the ability to deploy at meaningful scale.
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Blueleaf Energy and Universal Peak Sdn Bhd have achieved financial close with UOB for a utility-scale battery energy storage (BESS) project in Malaysia. The project will have an installed capacity of 100 MW/400 MWh. Project construction will commence under a build, own, and operate model. Universal Peak will support the project as a turnkey provider of electrical infrastructure solutions. The project is expected to be commissioned in mid-2027.
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CVC DIF has completed the acquisition of the Gabriela hybrid project in Northern Chile. The project was acquired from Grenergy. The project comprises 272 MW of installed solar photovoltaic capacity and 1,100 MWh of battery energy storage (BESS) capacity. The project is also supported by a 15-year dollar denominated, inflation-indexed hybrid power purchase agreement.
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Monarch Private Capital announced completion of two hybrid solar and battery energy storage (BESS) projects in Texas, developed by Sunraycer Renewables, for which it provided tax equity financing. The projects include the Midpoint solar project located in Hill County and the Gaia solar project located in Navarro County. Furthermore, the Midpoint project comprises 127.05 MWdc of solar capacity and a 50 MW/100 MWh BESS while the Gaia project comprises 183.84 MWdc of solar capacity and a 75 MW/150 MWh BESS.
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CrossBoundary Energy commenced operations of its solar and battery energy storage system (BESS) project for Kamoa Copper South Africa. The project comprises a 233 MWp solar photovoltaic array and a 123 MVA/526 MWh BESS. The project will supply 30 MW of baseload power to the Kamoa Copper mining complex in the Democratic Republic of Congo (DRC).
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