California's energy crisis of 2000-2001 presented numerous challenges to wastewater treatment plant operations throughout the state. The initial challenges included reliability of power supply and increasing energy costs. The crisis also provided opportunities, in the form of grants
and rebates, for implementing energy efficiency projects and increasing on-site power supply at wastewater treatment facilities. At the onset of the energy crisis, EBMUD started an energy management program and undertook a wide variety of demand reduction and power supply projects, completing
some of them within a year. This paper describes several energy-related projects initiated during this period, their implementation and effectiveness, and how they were coordinated to optimize plant-wide energy efficiency.
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