The California Sustainability Alliance (Alliance) has released new water-energy content to assist water agencies in improving the energy efficiency of their infrastructure. These include the Eastern Municipal Water District: A Case Study of Best-In-Class Water-Energy Programs and Practices report, a Water/Wastewater Agency Energy Analysis and Best Practices Tool, and new website content on selected best practice and emerging technologies for the water industry.
The Eastern Municipal Water District: A Case Study of Best-In-Class Water-Energy Programs and Practices report documents the range of potential energy efficiency and generation opportunities, types of programs and technologies available to help water agencies achieve energy benefits, and the barriers that need to be overcome to increase adoption these practices and technologies. The Eastern Municipal Water District serves as a case study to illustrate the types of strategies and measures California water agencies can implement to improve energy efficiency. The report identifies seven key strategies and 27 illustrative measures and emerging technologies. Some of these measures can reduce energy use and cost by up to 40% with a payback of 2-4 years or increase biogas production by 10-40%.
As part of this best practices study, the Alliance developed the Water/Wastewater Agency Energy Analysis and Best Practices Tool. The can be used by water agencies to quantify, at a high level, the annual energy costs associated with various sub-systems within a water agency's infrastructure. Based upon this analysis the tool provides a custom list of best practices and energy savings measures that should be explored to reduce energy use and costs. The tool is meant to screen and initially prioritize future energy management projects and facilitate discussions within the water agency and between the water agency and its energy utilities.
To supplement the study and the tool, the Alliance added new web-content to document several promising existing best practice strategies and emerging technologies that could reduce energy use in the retail water sector. These measures include:
- Aeration System Improvement
- Pump Refurbishment
- Fuel Cells
- Water Loss Control
- Distributed Recycled Water Production
- Digester High Performance Microorganisms
These new resources can help water agencies and energy utilities improve the efficiency of California’s water systems.