About Thermal Grid
Our Mission
Thermal Grid was founded to address a mismatch in the UK energy system.
Scotland produces large volumes of renewable electricity, but there are times when the transmission network cannot move all of that power to where it is needed. When this happens, wind generation can be constrained while industrial and commercial sites elsewhere continue to burn fossil fuels for heat.
At the same time, heat remains one of the harder parts of decarbonisation. Many factories, distilleries, food producers, laundries, hospitals, greenhouses and heat networks need reliable heat every day. For many of these sites, natural gas, LPG, oil or biomass still provide the simplest route to hot water, steam or hot air.
Thermal Grid exists to connect these two problems.
We believe constrained renewable electricity should be converted into useful heat wherever there is a practical commercial case to do so. By storing low-cost renewable electricity as heat, we can help industrial users reduce fossil fuel consumption while creating flexible demand for the electrical grid.
What We Are Building
Thermal Grid develops thermal storage projects for heat-intensive industrial and commercial sites.
Our systems are designed to charge when renewable electricity is abundant, low-cost or constrained, then store that energy as heat until the customer needs it. The stored energy can then be delivered through heat exchangers into the customer’s existing heat system.
Depending on the site, this can support hot water, steam or hot air applications.
We are not trying to replace every boiler on day one. For early projects, we expect thermal storage to work alongside existing boiler infrastructure. This allows customers to reduce fossil fuel use while keeping existing boilers available for backup, resilience and peak demand.
Thermal Grid’s role is to develop, structure and deliver the project. We are technology-partner led and will assess the most suitable thermal storage medium, charging system, heat exchanger design and commercial structure for each site.
The aim is simple: provide useful industrial heat at a lower and more stable cost than fossil fuel alternatives, while reducing emissions and exposure to fuel price volatility.
The B4 to B6 Curtailment Problem
Our initial focus is Scotland and the Central Belt.
This region brings together three important ingredients: strong renewable generation, grid constraints and concentrated industrial heat demand. That combination creates a strong case for long-duration thermal storage.
Scotland’s transmission constraints, including boundaries such as B4 and B6, can limit how much renewable electricity is moved south during periods of high wind generation. Thermal storage can provide a flexible local or regional demand source, converting some of that electricity into heat rather than allowing it to be wasted or constrained.
The Central Belt is also home to many potential heat users, including food and drink manufacturers, distilleries, breweries, laundries, hospitals, campuses, heat networks, greenhouses and industrial sites.
Thermal Grid is focused on finding locations where constrained renewable electricity and reliable heat demand can be brought together.
What Stage We Are At
Thermal Grid is at the early development stage.
We are currently looking for our first offtake partners: industrial or commercial sites with significant, predictable heat demand and a practical route to integrating thermal storage on site.
Good candidate sites are likely to have existing gas, LPG, oil or biomass boilers, meaningful annual heat demand, available space for equipment, and a desire to reduce fossil fuel use without compromising operational resilience.
We are also speaking with technology providers, engineers and potential project finance partners to shape a first deployment.
Our immediate goal is to develop a credible pilot project in Scotland that proves the commercial model: using renewable electricity that is abundant or constrained, storing it as heat, and delivering that heat to a real customer under a long-term heat purchase agreement.