The industrial sector still relies heavily on fossil fuels, contributing severely to climate change. Greendur addresses this critical challenge by pioneering high-energy-density latent heat thermal energy storage (TES), a key technology for realizing industrial decarbonization ambitions needed to achieve net-zero objectives.

Our innovative TES solution maximizes energy cost savings and ensures a higher penetration of renewable energy in industry. By charging our thermal battery with excess renewable energy (like solar-PV or wind), off-peak grid electricity, or waste heat, Greendur helps balance energy supply and demand, enhancing energy efficiency and reducing emissions. Ideal for high energy-demand industries, we offer significant reduction of energy cost and scope one carbon footprint together with enhanced energy independence.


Green tech, climate tech, clean tech, deep tech


Thermal Energy Storage



Innovative solution:

Greendur’s multifunctional and compact latent heat thermal energy storage system, offering 2 MWh and 500 kW in a 20-feet container, delivers clean heat up to 350 ºC with more than 90% efficiency. Our system boasts higher energy density than benchmarks due to the use of phase change materials. It’s a scalable, real plug-and-play solution, ensuring a 20-year lifetime. Greendur stands virtually unchallenged by competitors, thanks to its unique focus on medium-temperature process heat. Only a handful of companies around the world are focused on latent heat storage for industrial applications, and none of these competitors operate in the intermediate temperature range, despite 50% of industrial demand being up to 400 ºC. Our solution is also more affordable than Li-ion batteries and hydrogen options, thanks to lower initial costs and higher efficiency throughout its lifespan.

Greendur - Video

Meet the team

Jesús Castillo Yera (CEO)

Alba Jiménez Pagán (CTO)

Iñigo Gorri Garrido (COO)

Dámaris Martínez Rodríguez (Product Owner)

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