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As wind and solar penetration rises, the gap between when low-cost electricity is available and when industry needs heat is becoming more important.

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Our new white paper explores how flexible thermochemical energy storage can bridge that gap—turning renewable-rich electricity into firm, high-temperature industrial heat while helping grids absorb more VRE.

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Click here to receive a free copy of the white paper and learn more.

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Executive summary

The industrial decarbonization problem is not simply how to make heat electric. It is how to supply firm, high-temperature heat when the lowest-costelectricity increasingly arrives in variable, weather-driven windows. Wind andsolar are expanding quickly: the International Energy Agency (IEA) forecasts wind and solar to rise from 30% of European Union electricity generation in2025 to 46% in 2030; globally, from 17% to 27%; in China from 22% to 37%; andin India from 14% to 24%.

That transition increases the value oftemporal flexibility. High variable renewable energy (VRE) systems already experience periods in which renewable output is abundant relative to demand,followed by scarcity periods when output falls. The resulting signals includerenewable curtailment, falling wind and solar capture rates, negative-price hours and large intraday price spreads. In the first half of 2026, negativewholesale prices occurred during about 17% of hours in Spain and around 20% inSouth Australia and California; during European heatwaves in June, midday-to-evening price spreads reached as much as USD 600/MWh in severalmarkets.

FeX is designed around this mismatch. Its thermochemical storage architecture separates the timing of the electricity-intensive charging step from the timing of heat delivery. A plant can therefore continue to operate on its production schedule while the storagesystem responds to electricity availability and price - without asking the process to follow the weather, and without forcing the site to run a large electrical heater through the most expensive system or tariff peaks. Exposure to peak-demand or capacity charges remains tariff-specific, but flexible charging creates a tool to manage it.

Core thesis  

More VRE makes flexible  energy storage assets, like FeX’s, more valuable because it increases the  economic value of shifting electricity through time. FeX, in turn, can make  more VRE economically usable by converting firm industrial heat demand into a  controllable electrical load. The business case is therefore reciprocal, not unidirectional.