Project Nexus, the first solar panel canopies over irrigation canals in the US, is now online in California, and there are plans to expand the project to other areas.

Project Nexus is a $20 million pilot in central California’s Turlock Irrigation District launched in October 2022. The project team is exploring solar over canal design, deployment, and co-benefits using canal infrastructure and the electrical grid.

India already has solar panels over canals, but Project Nexus is the first of its kind in the US.

The Turlock Irrigation District was the first irrigation district formed in California in 1887. It provides irrigation water to 4,700 growers who farm around 150,000 acres in the San Joaquin Valley.

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Project Nexus will explore whether the solar panels reduce water evaporation as a result of midday shade and wind mitigation, create improvements to water quality through reduced vegetative growth, reduce canal maintenance as a result of reduced vegetative growth, and, of course, generate renewable electricity.

The California Department of Water Resources, utility company Turlock Irrigation District, Marin County, California-based water and energy project developer Solar AquaGrid, and The University of California, Merced, are partnering on the pilot. Project Nexus originated from a 2021 research project led by UC Merced alumna and project scientist Brandi McKuin.

Solar panels were installed at two sites over both wide- and narrow-span sections of Turlock Irrigation District canals in Stanislaus County, in various orientations. The sections range from 20 feet wide to 100 feet wide. University of California, Merced has positioned research equipment at both sites to collect baseline data so the researchers can decide where solar will work and where it won’t.

In February 2023, Project Nexus announced it would also deploy long-term iron flow battery storage in the form of two ESS 75kW turnkey “Energy Warehouse” batteries.

You can learn more about Project Nexus here:

Read more: In a US first, California will pilot solar-panel canopies over canals

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