The quest for innovative water conservation solutions has led Colorado to explore the potential of reducing reservoir evaporation through the implementation of floating solar technology. This approach aims to mitigate significant water losses from reservoirs and canals, particularly crucial in the drought-stricken Colorado River Basin.
A recent feasibility study conducted by the Colorado Water Conservation Board indicates that acre-foot savings could reach up to 429,000 acre-feet annually through the widespread adoption of floating solar technology. It was estimated that 1,900 Colorado reservoirs would be suitable for floating solar projects, potentially reducing evaporation by 407,000 acre-feet and irrigation canals could see a reduction of up to 22,500 acre-feet. These savings are significant, considering Colorado's annual municipal water use is around 380,000 acre-feet.
Several Colorado communities have taken the lead in implementing floating solar technology. The town of Walden has successfully operated a floating solar array at its water treatment facility since 2018 and Fort Lupton is developing a larger project to power its water treatment facility and contribute to the grid.
These projects demonstrate the benefits of floating solar and including reliable power generation, reduced algae growth.
There are implementation challenges however, including:
- Location and grid connectivity.
- Stakeholder collaboration.
- Aesthetic and recreational impacts.
- Upfront costs and funding.
- Safety and maintenance.
- Environmental impacts on aquatic ecosystems.
- Water rights complexities.
Floating solar technology offers a promising solution for reservoir evaporation reduction and water conservation, but further research, collaboration, and careful planning are essential to maximize its potential.
