Windsor, California

Floating solar panels on a water treatment plant

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Around every two years, the city of Windsor measures its greenhouse gas emissions and analyzes them with the aim of reducing them. In 2017, it was found that 38% of the city’s carbon footprint was due to wastewater treatment facilities.

To mitigate the impact of the sewage treatment plant, the city of Windsor aimed to install solar panels to make the facilities almost energy self-sufficient (at 95%) and thereby reduce the city’s carbon footprint. However, it faced a dilemma: there was a lack of available land in Windsor to install as many solar panels.

On the other hand, the water treatment pond, which collects the treated, filtered, and disinfected water, offered an available surface area to accommodate floating solar panels.

The journey with Ciel & Terre and Laketricity could begin. After two years of project development, construction, and installation, the floating solar panels were able to generate electricity for the sewage treatment plant.

Our role on the project

  • Project development & management
  • Stakeholder consultation & building permit issuance
  • PPA negotiation & financing
  • Construction assistance & supervision

1785 kWp Power generation capacity

22% Coverage ratio

About Windsor, California project

Location Windsor, California, USA
Capacity 1785 kWp
Domestic consumption equivalence 706 homes
Tons of CO2 emissions saved 1260 tons
Operational start date November 2020
Application Water treatment pond

About the Water treatment pond

Pond size 7.4 ha
Maximum depth 5 m
Water type Fresh water / Drinking water
Power plant size 1.6 ha
% of coverage 22%

Technical specifications

Number of solar panels installed in Windsor, California 4959
Panels specifications 360 W, 72 cells, Risen Energy

About anchoring

Anchoring type On the banks
Anchor type Percussive driven anchors

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