Underground Thermal Energy Storage in dense urban areas
Funds demonstrators of underground thermal energy storage systems that cut the cost of heat storage in dense European cities.
This European Commission call funds demonstrators of underground thermal energy storage systems -- ATES, CTES and BTES -- that cut the cost of heat storage in dense European cities, integrating with existing energy grids and other underground uses. Activities may start at any technology readiness level but are expected to reach TRL 6 to 7 by the end of the project, so this funds late-stage demonst…
The Commission wants novel technologies, design methods and organisational concepts for using the subsurface of dense urban areas for Underground Thermal Energy Storage (ATES, CTES and BTES systems), integrated with existing energy grids and other underground uses. It wants proposals to address uncertain seasonal demand, interactions between neighbouring systems, and inclusive community engagement around subsurface projects.
Sign up free to see the funding breakdown
Sign up free to see the industries in scope
Sign up free to see the full eligibility
Sign up free to see how to apply
Sign up free to see the timeline
Sign up free to see where teams trip up
Guides for this application
All guides →Horizon Europe Grants for Startups: A Founder Guide
A practical guide to Horizon Europe grants for startups, including EIC, consortia, eligibility, Funding & Tenders, TRL, budgets, and EU strategy.
Start hereTRL Levels Explained for Deeptech Founders
Learn what TRL levels mean, how to estimate technology readiness, and how TRL affects grants, EIC Accelerator, SBIR/STTR, funding stage, and application evidence.
DocumentsProof-of-Concept Data for Grants: Evidence Examples for Deeptech Applications
See how to present proof-of-concept data in grant applications, with examples for evidence registers, test logs, pilot data, and prior project proof.
DocumentsLetter of Support for Grant Applications: Template and Examples
Learn how to write and request a letter of support for a grant, with template structure, examples, reviewer logic, and common mistakes.
More from European Commission
All grants from this funder →Coordination for Cross-Sector Nuclear Technologies
🇪🇺European Commission · European Union
Funds coordination of European nuclear research platforms across energy, medicine, space, maritime uses and radiation protection.
Euratom Radiation Protection Partnership (PIANOFORTE)
🇪🇺European Commission · European Union
Funds PIANOFORTE’s 2026-27 continuation, an EU radiation-safety research partnership — only for its current members and any partner who joins them.
European Stable Isotopes for Nuclear Medicine
🇪🇺European Commission · European Union
Funds industrial production of stable isotopes needed for radionuclide therapies and a more resilient European medical supply chain.
Horizon Batteries: EV Recycling Pilot with India
🇪🇺European Commission · European Union
Funds a €9.4M lithium-ion battery recycling pilot line in India, matched to a separately funded Indian project on the same schedule.
Horizon Batteries: Sustainable Electrode Materials
🇪🇺European Commission · European Union
Funds four €7.1M projects that make battery electrode materials cleaner to produce — via greener refining or plant-based sourcing instead of mined graphite.
Horizon Buildings: Whole Life Carbon Data Platforms
🇪🇺European Commission · European Union
Funds three €5.25M projects that plug embodied and operational carbon data into building certificates, passports and BIM tools.
Similar grants
Browse the directory →
Energy Efficiency Loan with Capital Discount
🇱🇻ALTUM · Latvia
Funds enterprise energy-efficiency and renewable upgrades in Latvia through discounted financing.
Company Investment Support (Ettevõtte investeeringu toetus)
🇪🇪EIS · Estonia
Funds major fixed-asset investments by Estonian companies seeking to strengthen international competitiveness.
EIC Transition Open
🇪🇺EIC · European Union
Supports European deep-tech ventures advancing laboratory research toward validated prototypes and near-market technologies.
Business Greening with Capital Rebate
🇱🇻ALTUM · Latvia
Funds climate focused industrial modernization in Latvia through small business support in multiple regions.
CETPartnership Clean Energy Transition Call (Swedish Energy Agency)
🇸🇪Energimyndigheten (Swedish Ene · Sweden
Funds companies, universities, and public bodies operating in Sweden running cross-border clean-energy research and innovation projects through the Swedish Energy Agency's CETPartnership grants.
OP TAK Energy Savings — Call II (Úspory energie)
🇨🇿MPO · Czechia
Supports Czech firms reducing energy use with grants for building, process, and heat-system upgrades.