Technology showcase · Large-scale thermal electricity storage
Stolect
Large-scale electricity storage through thermal conversion.
Active member since April 2023
Understand the technology
Key fact Carnot battery
01 — Understand
Stolect technology, in three points
STOLECT develops large-scale electricity storage that can support fully renewable power systems by converting variable renewable electricity into dispatchable electricity.
01 The solution
Large-scale electricity storage through thermal conversion.
02 Technology principle
A Carnot battery converts electricity into heat stored in rocks or ceramics, then converts that heat back into dispatchable electricity.
03 Applications
- Renewable power grids
- Isolated grids
- Energy-intensive industries
- Surplus generation
STOLECT develops an electricity-storage technology based on thermal conversion, known as a Carnot battery. It converts variable renewable electricity into dispatchable low-carbon electricity, helps stabilise power grids and captures surplus generation. Electricity is reversibly converted into heat, stored in natural rocks or recycled ceramics, and later recovered to generate power.
STOLECT’s energy-storage revolution
The Carnot battery stores electricity by converting it into heat in durable, abundant materials such as rocks and ceramics, then converts the heat back into electricity when the grid needs it. Designed for power systems with very high shares of renewable energy, it offers large-scale storage, supports renewable integration and strengthens grid stability.
The technology is intended to combine strong efficiency, durability and operational flexibility. By storing excess renewable output for later use, it reduces dependence on fossil generation. Potential customers include isolated grids, renewable-power producers and energy-intensive industries seeking secure, lower-carbon electricity supply.
