Really Good News
Climate 1 SOURCE · UNCORROBORATED ≈ONE TOWN Jul 28, 2026

World's largest commercial sand battery heats town in Finland

The town of Pornainen, Finland, is now heated by a 13-metre-tall silo holding 2,000 tonnes of crushed soapstone, described as the world's largest commercial sand battery, storing renewable energy as heat for the community.

Why it matters

This project demonstrates a working method for storing renewable energy to provide heat, addressing the challenge of replacing fossil fuels in district heating.

Read the full reporting

CHECKED · 1 SOURCE · UNCORROBORATED

← All news