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Administration, Insurance, Licenses April 2026 6 min read

Agro-photovoltaism in French-speaking Switzerland: The miracle compromise that saves the harvests

Editorial responsibility: Franck Tournier · Report a fix

TL;DR

Faced with deadly droughts and endemic hailstorms (Lavaux, Valais), Swiss agriculture is reinventing itself. The Confederation authorizes and subsidizes a disruptive structure via the OFAG: Agro-Photovoltaics (Agri-PV). Instead of plastics or polluting and fragile anti-hail nets, delicate crops (raspberries, apricots, vines) are covered with translucent PV modules. Agronomically proven result: a reduction in water stress on the plant, stabilized agricultural yields, and the injection of carbon-free electricity into the site.

Salvation against water stress

Climate change is suffocating delicate fruits. Raspberries, blueberries or strawberries need shade during scorching hours. The federal agroscope quantified the tests after three dry years: Under semi-transparent panels, the temperature of the foliage is lowered by 4 to 5 degrees. Soil water evapotranspiration drops by 30%. Less drought, less irrigation water pumped. Fruit yields maintain intact sugar qualities compared to the surrounding burned plots.

Death to plastic anti-hail nets

In the Rhône plain or on La Côte, the roll of anti-hail net tears, flies away during cyclones and generates mountains of insoluble plastic waste every 10 years. Agri-voltaic PV glass-glass panels are certified for extreme hail (HW4) and last 35 years. Their framework is so massive that it provides steel armor to the vines and crops. They become the primary valorization asset of the vast wine estate.

The cooperative business model: the art of reselling in winter

An agricultural estate uses a lot of electricity for its irrigation pumps or its storage refrigerators. With Agri-PV, the farmer wipes out this crazy debt 100%. Better still, overproduction is injected and resold to the neighboring DNO. The pact is so juicy that SwissGrid promotes this type of agro-social innovation. In 2026, some pioneer winegrowers admit to drawing almost more annual profit from the Spot resale of their electricity production to the neighboring commune than from just the harvest of the grapes sheltered underneath.

Frequently asked questions

What is a translucent or semi-transparent solar panel?+

Unlike a total black panel (Full Black) placed on the roof, for agriculture, the manufacturer spaces the thin silicon photovoltaic cells between two immense thin plates of laminated glass. Thus, it lets through 30 to 45% of the photosynthetic light (PAR) essential for growth, while absorbing the violent deadly zenith of August which would burn the shrub.

Do we have the right to install this type of solar farm on agricultural land in Switzerland?+

Traditionally, the Land Planning Act (LAT1) strictly prohibited ground-mounted solar plants to protect arable land. Agri-PV achieves the perfect exemption (via the new federal Mantelerlass): since the 'agricultural' destination of the land is NOT sacrificed (the tractor passes underneath, the crop proliferates even better), the infrastructure is legally accepted in the OAC zone (Planning Ordinance).

Is it subsidized more massively than for individuals?+

Yes, the metal structure raised to 4 meters (to allow leaf removers and tractors to pass) is expensive. This is why, in addition to Pronovo, certain cantons (such as Valais and Vaud via climate funds) and the Fenaco cooperative are adding exceptional investment aid covering up to 60% of material costs by recognizing the status of 'food resource protection' coupled with the energy mix.

Sources & method

Agroscope Switzerland: Studies on small fruit yields under PV cover (2024). Federal Ordinance on Spatial Planning (OAT). SuisseEnergie Agri-PV reports.

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