Why Gigawatt-Scale Battery Storage? – A Strategic Vision from Sonnen Founder Christoph Ostermann

🎙️ PV Magazine Podcast Summary – June 27, 2025

In the latest PV Magazine Podcast, Christoph Ostermann, co-founder of energy storage pioneer sonnen and now a leading investor in utility-scale battery projects, shares his vision on why the future of clean energy hinges on gigawatt-scale battery deployment. He explains that the integration of large battery systems is no longer a niche investment—it is the backbone of a renewables-based energy system. As volatile market conditions, grid congestion, and high renewable penetration increase, battery storage is essential to maintain flexibility and value capture. Ostermann emphasizes that investing in large-scale battery infrastructure is not only about arbitrage but also about grid services, peak shaving, congestion management, and positioning for future capacity markets. With Germany and Europe advancing their climate goals, he sees energy storage as a critical enabler. 👉 Listen to the full episode (in German) here: 🔗 PV Magazine Podcast: Christoph Ostermann – Gigawatt-scale battery storage

Our Perspective at WWL Energy:

At WWL Energy, we share Mr. Ostermann’s long-term view. Batteries are not simply infrastructure—they are strategic assets that create new flexibility layers in the energy system. Our portfolio approach increasingly prioritizes hybrid PV + BESS models at scale.