Waste heat to clean electricity
Cut your energy costs and reduce your carbon footprint without changing a thing in your process.
Europe wastes over 200TWh/year of industrial heat, the output of 25 nuclear plants.
ExtraJool turns lost heat into decarbonised electricity with a frugal-by-design technology reducing your energy bill.
Why it just makes sense
A simple, frugal solution with immediate gain and designed for Industrial Environments.
ExtraJool is making an impact both environmentally and economically
Waste heat is energy, yet most of it vanishes into the atmosphere. We’re changing that by transforming this lost potential into electricity cheaper than fossil energy.
billions €
to be saved with Heat-to-Power.
Source: McKinsey
tons CO2
saved per kWe installed
by ExtraJool (EU average)
years
of fixed electricity price
clients
signed (early access & early adopter)
Behind the tech, a team of builders
ExtraJool was founded by three seasoned entrepreneurs, engineers and operators with one goal: make clean energy a no-brainer for industrial players.
From lab to factory floor
2023
Initial concept, company set up
Initial concept born from years of industrial field experience.
2023 – 2025
Development & industrial adaptation
Small scale prototype, TRL4 validated 2024
2025
Early adopters signed
First early adopters and pilot clients secured.
2026
First installations
First industrial modules installed on site.
2027
Scale-up phase
Deployment acceleration across Europe.
They support our mission
What it’s like to work with ExtraJool
ExtraJool delivers high performance and ease of deployment, unlocking untapped waste heat potential. Working with them is a privilege, given their efficiency, professionalism, and truly original and innovative approach.
“By rethinking the system as a whole, we raised the bar delivering unmatched robustness, seamless simplicity, durability, compacity and above all efficiency.”
From curiosity to clarity! Your questions, answered.
On average 34 tons of CO₂ can be avoided per kWe installed, together with significant reductions in energy costs. Each unit of clean electricity generated replaces an equivalent amount of fossil-based electricity, contributing directly to decarbonization.
For exemple in only one year, our smallest machine produces approximately 160 MWh of electricity, which translates into substantial annual CO₂ savings depending on the energy source being displaced. Replacing coal-fired electricity avoids around 144 tons of CO₂ per year, while substitution for fuel oil saves about 125 tons. If the same amount of clean energy replaces natural gas, the savings reach approximately 64 tons of CO₂. When compared to the European electricity mix, the reduction is around 48 tons, and relative to the French mix, about 10 tons of CO₂ can be avoided annually.
In all cases, clean electricity generation significantly reduces carbon emissions while decreasing dependence on fossil fuels and stabilizing long-term energy costs
Our solution is optimized for sites with thermal losses above 180°C and a thermal power of more than 100 kWth. We’re happy to assess your specific case, the process typically begins with a preliminary evaluation based on your available data, followed by an on-site visit to precisely measure and analyze the thermal losses.
First modules will be deployed in early 2026. Pre-booking is open for all type of modules.
Our blurb? Okay! ExtraJool cuts your electricity bill by turning waste heat into power — thanks to our innovative, high-efficiency heat-to-power tech.
