French winemaker David Moreau has invested around $4 million in 6,000 remotely adjustable solar panels to protect his vineyard from rising climate risks. The 45-year-old producer in Saint-André-de-Lidon, southwestern France, has placed the panels over four hectares of vines to shield grapes from heat waves, hail and late frost.
Moreau says heat regularly damages his grapes, costing him around 5% to 10% of his harvest each year. During hailstorms, the panels can be positioned flat to protect up to 70% to 80% of the vines. The system also gives the vineyard a 90% chance of avoiding frost damage.
The installation, supplied by Sun’Agri, the agrivoltaic arm of Eiffage, stands around five metres above the ground and covers rows of Ugni Blanc grapes, the main grape variety used in cognac production.
However, the project comes with a major trade-off. A French regulation introduced in 2002 prohibits roofs, including solar structures, over vineyards carrying an AOC or IGP geographical designation. Since Moreau installed the panels, future harvests from the site will lose their protected designation and will instead be sold as ordinary wine without a geographical indication. He will only know the full financial impact after the first harvest in 2029.
The decision highlights a growing conflict in French winemaking. Producers are increasingly looking for ways to adapt to climate change, while France’s wine system places significant value on traditional production rules and the geographical identity of its wines.
