Our Story

The Caldera Story

The Caldera team have been working in the energy storage space for over 10 years having started on grid-scale electricity storage systems. These systems attempted to store electricity in the form of heat on a large scale, but it became clear that the commercial opportunity was limited due to high capital cost and low utilisation.

The modelling showed that flexible demand, such as electric vehicles and the storage of electricity as heat, have much better economics than electricity storage. We turned our attention to how to store energy as heat and had a Eureka moment on how to make a low-cost media for storing heat. The result was Warmstone which has been patented and developed along with a suitable insulation strategy to retain the heat with minimal losses.