State utilities in California are preparing to launch a pilot project to cover California’s irrigation canals in solar panels.
The decision was influenced by a landmark 2021 research paper, where scientists at Univ. of California Santa Cruz crunched the numbers and figured that the panels would save 63.5 billion gallons of water from evaporation annually by shading the flowing water.
Turlock Irrigation District Water & Power is preparing two pilot canal projects: a 500-foot (152-meter) curved canal section near the town of Hickman, and a second mile-long (1.6-km long) straightaway in nearby Ceres.
GNN reported last year that the UC Santa Cruz investigation found that for every megawatt of solar energy generated during Turlock’s 290 days of average sunshine, the pairing of panels over canals could replace 15-20 diesel generators used to pump water along the canals.
Called Project Nexus, the work is slated to begin this October with funding of $20 million from the state’s coffers.
Along with preventing evaporation, reducing the land clearance needed for solar farms, and boosting green energy output, the canal-mounted panels have the added benefit of longer functional lifespans, as the water underneath keeps the panels’ undersides cooler.
This idea actually began in the Indian state of Gujarat in 2014, when a pilot project covering 750 meters of canal space led to the creation of an entire canal-topped solar plant in Vadodara District, and another one totaling 100 megawatts off the Narmada River.
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