Can a greenhouse share its sunlight with solar panels?

REGACE explores electricity inside working greenhouses—and shows why a big potential figure needs careful reading.

Select an underlined term for a short explanation.

A greenhouse already shelters crops and manages their light. REGACE asks whether the same structure can also produce electricity. The European Commission identifies Israel’s Alzahrawy Society as coordinator and records test installations in several countries, including Israel—a documented role in a cross-border research effort.

The project’s technology places movable photovoltaic panels inside the greenhouse, below its covering. A responsive tracking system changes their angle according to crop needs. REGACE also investigates carbon-dioxide enrichment to support plant growth under reduced light. The idea is to manage a shared resource: the light used for electricity is also part of the crop’s growing environment. The project describes intended benefits; these should not be read as guaranteed harvest improvements.

Its January 2026 announcement offered a striking estimate: existing greenhouse structures could accommodate around 23% of the solar capacity needed across Europe, given sufficient investment. The denominator matters. This is a projected share of solar capacity, not 23% of all renewable electricity actually generated. The release does not provide enough underlying assumptions to independently reproduce that continent-wide estimate.

Existing structures are part of the attraction, but a greenhouse is working agricultural infrastructure. The project’s first reporting period describes adapting mechanical components for strength and safety and developing panels with different light-transmission properties. Those tasks show why fitting solar technology into a greenhouse requires attention to the structure and the crop together.

The useful next questions concern the whole arrangement: crop results, usable electricity, added inputs and the work required to keep everything operating. We should read the large capacity estimate as a research lead, not a delivery forecast. The stronger story is the attempt to make food production and power generation fit inside infrastructure that already exists—and the evidence still needed to show where that fit is worthwhile.