What if the key to decarbonising heavy industry was… bricks?

That’s the radical idea behind Rondo Energy Energy, one of the most exciting innovators in clean heat – and a 2025 BloombergNEF Pioneer!

Rondo’s Heat Battery ​uses bricks to store renewable energy as continuous, zero-carbon industrial heat. The battery then releases that heat on-demand either as air or steam, thereby replacing traditional boilers and facilitating a low-cost decarbonization strategy.

It’s simple and scalable. A single Rondo Heat Battery reduces over 40,000 tons of CO2 annually, equivalent to the emissions offset by 8,700 electric vehicles, making it a vital solution in the drive toward net zero.

We’re proud to support Rondo and celebrate its recognition among global climate leaders.