FILE: Piolenc boasts France's first floating solar power plant The small town of Piolenc in the Vaucluse used to be known for its garlic production, but now boasts a huge floating photovoltaic power plant, the first in France. It is the most powerful of its kind in Europe, producing 100% renewable energy that supplies electricity for 10,000 people, more than the city's population. Piolenc is preparing to become the first positive energy city in France. FILE IMAGES\\n