Charged with Insight and Opportunity

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On July 1, energy investors, lenders, market innovators, and legal experts convened at the Sofitel Frankfurt Opera for Repono’s first-ever Banker’s Day. The theme was clear: Battery Energy Storage Systems (BESS) are no longer a fringe play in Europe’s energy transition—they’re at the center. And as the continent doubles down on renewables, the spotlight is turning sharply toward storage as the bridge to grid reliability and market flexibility.

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Combining extensive market analysis, regulatory clarity, technological insight, and frank dialogue about risk, returns, and the realities of execution, the event brought together leading voices from Repono, Aurora Energy Research, Enspired, and Osborne Clarke, as well as an expert panel featuring technical operators, sponsors, and financiers. It was, as one participant put it, “a rare day where you get this much practical insight and strategic clarity all in one room.”

Why Storage, Why Now?

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The intermittency of renewables is no longer just a technical challenge—it’s an economic one. Germany, for instance, is seeing an explosion in negative pricing hours, even as it phases out coal. BESS are uniquely positioned to stabilize the grid, arbitrage price swings, and provide critical grid services.

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As Europe accelerates its renewable rollout, the question of how to make large-scale energy storage commercially viable and how to accelerate BESS deployment has become increasingly urgent. Spain’s recent blackouts and Germany’s increasingly erratic electricity prices are stark reminders of what’s at stake when grid flexibility doesn’t keep pace with deployment.

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Market Intelligence: BESS in Germany and Europe

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Opening the agenda, Oxford-based Aurora Energy Research took a deep dive into Germany’s BESS outlook. Their message was unequivocal: market fundamentals remain strong.

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Germany could see 30 GW of battery capacity by 2030—a 15-fold increase. Even the most conservative forecasts suggest a quadrupling from today’s levels. That growth is fueled by surging price spreads, which have tripled since 2020.

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“Today is a golden time for batteries,” the company’s principal Thaddäus Kreisig noted. “Spreads are high, the need for flexibility is urgent, and even with future revenue compression, battery storage remains a profitable play. The biggest barrier is securing a grid connection.”

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Ancillary services (like aFRR and FCR) are important for grid stability and currently delivering strong returns. But these markets are small and risk saturation. Kreisig stressed that wholesale markets (day-ahead and intraday) will remain the long-term revenue backbone. Aurora’s modeling tool Chronos simulates multi-market optimization and forecasts strong business cases for 2- to 4-hour systems entering the market through 2029.

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About Repono AB

Repono AB is a Swedish-based independent energy storage operator and developer focused on deploying large-scale battery energy storage systems (BESS) across Europe. The company enables grid stability, market flexibility, and renewable integration through its growing portfolio of assets in key European markets.

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Media Contact

Karim Nils Grueber
CEO, Repono AB
Email: karim.grueber@repono.com
Website: www.repono.com