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Horizon Europe Cluster 5 — Climate, Energy and Mobility

Horizon Energy: Hydropower Plant Refurbishment

Funds two €8.5M projects that modernise existing hydropower plants for efficient, flexible and climate-resilient electricity generation.

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Hydropower has to become more flexible as electricity systems absorb more variable renewables, while existing plants face ageing equipment, harsher weather and tighter environmental constraints. This topic funds practical refurbishment and demonstration at existing hydropower plants.

Projects can modernise turbines, generators, draft tubes, nozzles and distributors; develop materials that improve

Demonstrating hydropower technology solutions for efficient, forward-looking refurbishment of existing plants. Projects may improve turbines, generators, materials, digital instrumentation and controls, operational strategies, maintenance, concrete and embankment safety, or simulation and forecasting for harsher operating conditions. Solutions must be socioeconomically and environmentally sustainable, with assessment of biodiversity, ecological status, fish migration, water flows and sediment dynamics, while adapting plants to climate change and more variable renewable electricity.

CycleiHow often this grant runs — e.g. annually, on a rolling basis, or a one-off call.Biennial
Next deadlineiThe next date applications are due. Rolling means you can apply any time.1 Dec 2027
Decision timeiTypical time from the deadline to the funder's decision.22 weeks
Project durationiHow long the funded work is expected to run.
Award typeiThe form of funding — grant, equity, loan, tax credit, etc.Grant
Match fundingiThe share of project costs you must cover yourself. 0% = fully funded.30%
Funding pooliThe total budget available across all awards in this round.€17M

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Last verified: 25 Aug 2026Funder reference: HORIZON-CL5-2027-07-D3-11Source: ec.europa.eu