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Researchers identify optimal level of solar, battery storage for Europe
Scientists in Hungary have developed a model to calculate the optimal PV and battery storage balance to support the European grid in the next few years. They found the cost-optimal range is 530 GW to 880 GW of solar, combined with battery storage equivalent to 2.5% to 7.5% of the total intermittent capacity.
9 hours ago
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Novel sizing approach for smart home batteries, solar
Researchers in Iran found a 500 Wh battery paired with 1 kW of solar generation capacity – and operating under a dynamic home energy management system (HEMS) – could offer up to 96% arbitrage opportunity while managing factors such as market prices, uncertain grid supply etc.
Jul 04, 2025
Brazilian energy storage regulation due this year, regulator official says
Daniel Danna, rapporteur for regulator the Agência Nacional de Energia Elétrica's (ANEEL) Public Consultation (CP) 39, of 2023, told Brazil's Chamber of Deputies initial energy storage rules would be published in the second half of the year, with two rounds of further regulatory discussion due to finish by 2028.
Sonnen: Intelligent battery charging vital for home solar arrays
The ever-increasing number of negative electricity price hours is affecting owners of solar arrays. This year, the shortfall in payments from the Renewable Energy Sources Act (EEG) could rise to around €250 ($294), affecting 40% of annual revenue, according to a projection by storage company Sonnen.
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US Senate Republicans propose sparing batteries harshest elements of anti-Green New Deal legislation
Energy elements of Republicans' Budget Reconciliation Bill would leave the tax credits of battery component factories largely untouched but could target some foreign manufacturers as well as restricting incentives for small-scale batteries.
At least 18 GW of batteries await Brazil’s planned auction
While Brazil is making progress in customer-side, "behind-the-meter" and off-grid battery solutions – with more than 700 MWh – it still lacks guidelines for a planned gigawatt-scale national auction. Markus Vlasits, president of the Brazilian Association of Energy Storage Solutions (ABSAE), tells pv magazine about the nation's utility-scale battery bottleneck.
EcoFlow reports storage surge as Germany reaches 1 million balcony power systems registered
EcoFlow reveals just how much storage is being added into the plug-in balcony solar system ecosystem in Germany. ESS News spoke with Arne Herkelmann, regional product manager at EcoFlow, about the milestone, the critical data shaping the market, and the hurdles that remain in Germany and wider Europe.
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