A groundbreaking initiative to install solar panels over California's extensive canal network is gaining momentum, with researchers and state agencies joining forces to expand clean energy generation while conserving precious resources.
The California Solar Canal Initiative (CSCI) builds on promising research from the University of California, Merced, which demonstrated the multiple benefits of covering the state's 4,000 miles of water canals with solar arrays. The project brings together experts from seven universities and is spearheaded by USC Dornsife Public Exchange and Solar AquaGrid.
According to the 2021 UC Merced study, solar-covered canals could generate 13 GW of energy annually - approximately one-sixth of California's installed capacity at the time. This clean energy production would help the state reach its goal of cutting greenhouse gas emissions 40% by 2030.
The initiative offers additional advantages beyond power generation. By utilizing existing infrastructure, the project could save up to 50,000 acres of land that would otherwise be needed for ground-mounted solar installations. The canal covers are also expected to reduce water evaporation and improve air quality.
A $20 million pilot project called Project Nexus is already under construction, testing solar installations over two canal sections - one 20-foot wide and another 110-foot wide. The pilot includes energy storage capabilities to support grid stability during periods of reduced solar generation.
"California is leading the way in exploring innovative solutions to tackle climate change and strengthen our water and energy resilience," said CNRA Secretary Wade Crowfoot, highlighting the state's commitment to the initiative.
The CSCI team will work closely with key state agencies, including the California Department of Water Resources, Natural Resource Agency, and Energy Commission, to identify suitable locations and willing communities for future deployments.
This collaborative effort represents a creative approach to addressing California's energy and water challenges while making efficient use of existing infrastructure. As Project Nexus nears completion this year, its results will help shape the broader implementation of solar-covered canals across the state.