Solar Canal Projects: Integrating Energy and Water Conservation
Solar panels are set to adorn water canals across California, Utah, and Oregon as part of three upcoming projects backed by federal funding from the Inflation Reduction Act (IRA). The IRA has allocated $25 million specifically for the integration of photovoltaic systems with water reclamation facilities, aiming to explore the potential benefits of this innovative approach.
With a combined investment of $19.5 million, these projects, overseen by the Bureau of Reclamation, aim to tackle the dual challenges of energy production and water conservation in the western United States. Initiated with input from California Representative Jared Huffman, this program focuses on studying the efficiency gains achievable by covering canals with solar panels.
The concept of installing solar panels on canals presents a promising synergy between energy and water management technologies. By providing shade over the water surface, the panels help reduce evaporation losses while benefiting from the cooling effect of the water, thus enhancing their efficiency and longevity.
Representative Huffman highlighted the multifaceted advantages of this approach, stating, “Deploying solar panels on our canal systems is a smart solution to our growing water and energy dilemmas – it harnesses clean energy technology to increase efficiency while reducing our carbon footprint and water loss from canal evaporation.”
The largest of the three projects, located in California, has secured $15 million in funding. Spearheaded by the San Luis & Delta-Mendota Water Authority, this initiative involves deploying floating solar arrays on the Delta-Mendota Canal. Through a public-private partnership with the University of California-Merced, researchers will evaluate various floating solar technologies to assess their viability, costs, and benefits, as well as address operational challenges.
A previous study conducted by the University of California, Merced, and the University of California, Santa Cruz, highlighted the substantial energy generation potential and water savings achievable through such initiatives. By covering California's extensive water delivery infrastructure with solar panels, the study estimated an annual energy generation of 13 GW, along with significant water savings equivalent to irrigating farmland or meeting the needs of millions of residents.
The other two pilot projects, located in Oregon and Utah, received $2.55 million and $1.5 million in funding, respectively. These projects aim to gather data on the technical and economic feasibility of implementing solar canals on a larger scale over a five-year demonstration period.
Beyond enhancing photovoltaic performance and curbing evaporation, solar installations on canals are anticipated to reduce maintenance efforts, preserve agricultural lands, and mitigate the energy and carbon footprint of water reclamation facilities. Complemented by investments from the Bipartisan Infrastructure Law, which allocates $8.3 billion over five years for various water infrastructure projects, these initiatives signify a concerted effort towards sustainable water and energy management in the region.
