The town of 37,000 on the Loire river is the first in Europe to experiment with the technology developed by Israeli company Sol-logic.
Inspired by the acacia tree found in the Israeli desert and African savanna, the futuristic-looking "eTree" also supplies water and street lighting.
The first prototype was unveiled in Israel in 2014. A year later the first operational model was presented at the COP 21 climate conference in Paris.