09/08/2026
This is a real Win-Win. And it seems i would be workable here in the States, especially in the SW where they do lots of irrigated agriculture and have shortages of water available.
France is covering its canal network with solar panels — a 1,000-kilometre programme that places bifacial panels directly above water channels, generating electricity from the reflection of sunlight off the water surface while simultaneously reducing evaporation losses from canals that carry 5 billion litres daily to southern French agriculture.
France's Canal du Midi — a UNESCO World Heritage site connecting the Atlantic and Mediterranean — and the adjacent Canal de la Robine carry irrigation water through the Languedoc and Provence regions, where summer temperatures regularly exceed 38 degrees and evaporative water loss from open canal surfaces reaches 15 to 20% of total flow. The Canal de Provence irrigation cooperative has been losing an estimated 45 million cubic metres of water annually to evaporation — water that costs energy to pump, treat, and distribute.
Technique Solaire has developed a floating canal solar system specifically for French irrigation canals: panels mounted on lightweight pontoons that rest on the canal surface, provide 70% shade coverage, and generate electricity from both direct sunlight above and reflected light from the water surface below. The pontoon design allows maintenance boats to pass, fish ladders to function, and water flow to continue unimpeded.
The Aqua agrivoltaique pilot on the Canal de la Robine — 11 kilometres operational since 2022 — has measured 18% reduction in evaporation, 12% increase in electrical output compared to equivalent land-based bifacial panels from water surface reflection, and 100% of local maintenance performed by the same crew that maintains the canal infrastructure.
France's canals were built to move water. They are now generating electricity from the sun that was stealing it.
Source: Canal de Provence & Technique Solaire, French Canal Solar Programme Evaluation Report 2024