What is Heatcube?
Heatcube is an innovative solution delivering low-cost, green steam on demand and at scale. At its core, it’s a molten-salt thermal battery designed for efficient, high-temperature energy storage. This technology is crafted to decarbonize industries that need process heat in the 150–300°C range. Think of it as a game-changer for sectors like food and beverage, pharmaceuticals, chemicals, manufacturing, and heavy industry — all of which rely heavily on steam. Heatcube fits right into existing steam infrastructure, making the switch to cleaner, cheaper steam as smooth as possible.
Main Benefits of Heatcube
Heatcube packs some impressive performance metrics that make it stand out:
- 10-20 MW Charging Capacity
- 39-104 MWh Storage Capacity
- Up to 14 MW Discharge Capacity
- Steam Temperatures between 150-300°C
- Round Trip Efficiency greater than 93%
- Charge Response Time under 3 seconds
- Annual CO₂ Reductions up to 15,000 tons
- Power-to-Heat Application
- Lifetime exceeding 25 years
These numbers aren’t just stats — they represent a real shift toward sustainable industrial heat that’s reliable, efficient, and cost-effective.
How Does Heatcube Work?
Here’s the cool part: Heatcube charges up when electricity prices drop, storing energy as high-temperature heat using safe, non-toxic molten salt. Then, when industries need steam, it discharges on demand — fast and efficient, with a round-trip efficiency over 93%. Plus, it’s built to last, with a lifetime performance stretching beyond 25 years. This means industries can tap into renewable energy without worrying about interruptions or inefficiencies.
Who Benefits from Heatcube?
Heatcube is tailored for industries that require high-temperature process heat — specifically in the 150 to 300°C range. This includes food and beverage producers, pharmaceutical companies, chemical manufacturers, and heavy industry players. The beauty of Heatcube is how it integrates seamlessly with existing steam systems, so businesses don’t have to overhaul their operations to go green. It’s about making decarbonization practical and accessible.
Flexible Purchasing Options
Heatcube offers two main ways to get on board:
- Heat-as-a-Service (HaaS): This option lets companies access clean, renewable heat with minimal upfront costs. Kyoto Group handles installation, operation, and maintenance, so customers just pay for the steam they use. It’s a turnkey solution that removes financial hurdles and simplifies the switch to sustainable energy.
- Heat-as-a-Product (HaaP): For those who want to own their Heatcube, this option allows on-site production of renewable heat. It integrates directly into operations, cutting emissions and energy costs while delivering high-temperature heat.
Heatcube’s Impact on Sustainable Development Goals
- SDG 7: Affordable and Clean Energy — by providing renewable, low-cost industrial heat
- SDG 9: Industry, Innovation, and Infrastructure — through innovative thermal battery technology
- SDG 12: Responsible Consumption and Production — enabling industries to reduce carbon footprints
- SDG 13: Climate Action — significantly cutting CO₂ emissions from industrial heat processes
Real-World Success: The KALL Ingredients Project
Right now, in Hungary’s agricultural heartland, Heatcube #2 is being installed at KALL Ingredients — one of Europe’s most advanced grain processing plants. This project, set to complete by summer 2025, is a major leap toward fossil-free industrial heat. It replaces traditional gas with electrified thermal energy, marking a significant step in the energy transition. It’s a perfect example of how Heatcube is making green energy practical and impactful in real industrial settings.
