How Sand Batteries Are Quietly Solving Industrial Heat Emissions | Soliverse Ep. 41

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Most discussions around energy storage focus on electricity. But what if the bigger opportunity is heat?

In this episode of Soliverse, Peter Pongracz speaks with Tommi Eronen, CEO and Co-Founder of Polar Night Energy, the company behind the world's first commercial sand battery.

Tommi shares the story behind the technology, how thermal energy storage works, and why industrial heat remains one of the most overlooked challenges in the global energy transition. The conversation covers thermal storage economics, district heating, industrial decarbonization, project deployment in Finland, and Polar Night Energy's vision for scaling Heat as a Service across Europe.

Connect with Tommi Eronen:

LinkedIn
Polar Night Energy

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Thank you for listening to Soliverse | The Future of Solar, the podcast for people building the future of solar, storage, and renewable infrastructure.

Each episode features grounded, unfiltered conversations with the people financing, developing, operating, and scaling real projects across the solar and clean energy ecosystem.

Soliverse exists to cut through noise, hype, and disconnected narratives and replace them with clarity, realism, and execution-focused insight for professionals who want to make smarter decisions, faster.

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