Watteos
Develops, finances and operates solar and battery storage projects in France for local authorities, businesses and landowners
Highlights
- Young companyFounded 2022
- New on EvolcAdded 2026-11-01
About Watteos
Watteos is an independent energy developer (aménageur énergétique) focused on territorial renewable energy projects in France. It covers the full project lifecycle, from site detection, studies and development through engineering, financing, construction, operation and maintenance. Its solar projects include rooftops, carports, floating installations, ground-mounted plants and agrivoltaics. It also develops battery energy storage (BESS) projects, either co-located with solar sites (1 to 17 MW, over 2 hours, medium-voltage connection) or as standalone sites (over 50 MW, high-voltage connection).
Its customers include local authorities, tertiary and industrial businesses, landowners, electric-mobility projects and farms. Through its independent power producer activity, Watteos develops and finances photovoltaic assets and builds and operates them for its own account. Its sister company SIREOS handles engineering, procurement, construction and commissioning of large solar plants, with projects of 2.2 to 140 MWc and a stated track record of 1.5 GWc, and is also active in Italy.
Watteos was founded in 2022 and is headquartered in Aix-en-Provence, France.
Product: Solar PV project development, financing, construction and operation, plus battery energy storage (BESS) projects
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Website technologies
Tools and platforms detected on this company’s website, grouped by purpose. Dates record when Evolc observed them.
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Website detection does not establish a paid subscription or company-wide use. Tools loaded after consent or sign-in may be missed. “No longer observed” does not prove the company stopped using a tool.