Company · Energy & Climate

Greendur Technologies

greendur.com ↗ ·Huarte ·Pre-seed

Greendur Technologies is a Navarre-based deeptech startup founded in 2020 that develops thermal energy storage systems ("thermal batteries") based on latent-heat phase-change materials to decarbonise industrial process heat. Its systems charge from renewable electricity, grid off-peak power or waste heat and deliver clean steam and heat up to ~350 °C, targeting efficiency above 90% and cuts in Scope 1 emissions and energy costs. After four years incubating at CEIN it moved in 2025-26 to a 600 m² facility in the Areta industrial park in Huarte (Navarra) and plans European expansion into France, Germany, Poland and Italy.

Founded
2020
Founders
1
News
0
Rounds
1
Investors
5
SectorsEnergy & Climate, Deeptech & Hardware, Industrial decarbonisation, Thermal energy storage, Cleantech Start-up MapEnergy & Climate › Batteries & EV charging

Profile updated 5 Aug 2026

Founders

Jesús Castillo Yera
Founder & CEO

Global models

No comparables on record yet.

Investors 5

EIT InnoEnergy
www.innoenergy.com
Investor Spain
Investor Spain
Lanzadera
lanzadera.es
Investor Spain
Sodena (Sociedad de Desarrollo de Navarra)
sodena.com
Investor Spain
Village Capital
vilcap.com ↗
Investor United States

Funding rounds 1

Pre-seed · €227K
Greendur Technologies, founded in 2020 by engineer Jesús Castillo to build a patented thermal battery that stores renewable energy and recov…
2022-02-16

News & media

No coverage on record yet.
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