Solar Canals Put Infrastructure to Work

A California pilot project is exploring whether irrigation canals can support solar generation while conserving water and improving canal operations.

Project Nexus combines three solar-panel configurations with working canals operated by the Turlock Irrigation District. The completed pilot generates 1.7 megawatts of electricity and is collecting data on evaporation, temperature, wind, solar radiation, and other conditions.

Researchers and project partners have reported several potential benefits:

• Generating clean energy without developing additional open land
• Shading canals to reduce evaporation
• Limiting algae and aquatic weed growth
• Improving water quality and reducing some maintenance needs
• Using existing infrastructure corridors more efficiently

The project also demonstrates why this approach will not fit every canal. Panel height, cleaning equipment, worker access, nearby development, land ownership, permitting, and connections to the electrical grid can all affect feasibility and cost.

Project Nexus remains a proof of concept, and California officials are awaiting the final research report before considering broader investment. For builders, engineers, energy contractors, and infrastructure partners, the pilot offers a useful look at how existing public assets could serve multiple purposes.

Related Links: https://www.kqed.org/science/2002033/heres-what-california-is-learning-from-solar-panels-built-over-irrigation-canals