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able to shave some of the peak demands,” Odencrans said. “We have been able to level out consumption, and on occasion, we are able to provide all the energy that we need to operate this facility.” The EMWD reports in its customer newsletter that the natural-gas fueled microturbine array reduces its peak demand by more than 10 percent. In addition to the microturbines, the system uses a heat exchanger, absorption chiller, and evaporation tower. “ We are able to become more efficient, but also more self-reliant. As we develop more of our own energy resources we can depend less on the grid itself for our energy needs.” — Peter Odencrans, Senior Public Affairs Officer Eastern Municipal Water District Eight C60s operate in a CCHP application. Exhaust from the system is used to heat water and drive an absorption chiller that creates air conditioning for facility offices. “This is a huge benefit for the EMWD because they were able to reduce their power consumption from their old electric chiller,” explained Mark Parriott, Vice President of Customer Engineering for Capstone distributor Regatta Solutions, Inc. “Our absorption chiller has much more capacity than we have the ability to put heat into it right now,” said Tom Acedes, EMWD’s Control Communication System Coordinator. “The more waste heat we can capture, the more tonnage we can get out of that chiller, and, the more we can reduce our utility usage.” Peak load for the facility is 1,300kW. Average electrical power demand is 380kW. “We generate enough power to offset during peak times about a third of our usage, and during off-peak times we can actually produce more than we can use,” Eight Capstone C60 microturbines provide combined cooling, heating and power to EMWD’s Operations and Maintenance Center in Perris, California, while a ninth microturbine provides combined heat and power to the facility. Acedes said. “The turbines are controlled by the Capstone Advanced Power Server, and basically have a zero utility kilowatt hour usage during this time period.” Exhaust from the additional C60 is captured to provide heat for a powder coating system. “We need a very dependable power supply for this,” Odencrans explained. “We can use the heat to powder coat some of the valves and other equipment that we need to put in the field.” “We basically supply a clean exhaust output. We just direct the exhaust right into the oven and it is already the right temperature,” said Acedes. In a report from the U.S. Department of Energy, the EMWD’s projected payback period is two and a half years, with a monthly energy bill reduction of US$42,000. “From a strictly cost standpoint it makes a lot of sense,” Odencrans explained. “We are able to become more efficient, but also more self-reliant. As we develop more of our own energy resources we can depend less on the grid itself for our energy needs.” 21211 Nordhoff Street • Chatsworth • CA • 91311 • 866.422.7786 • 818.734.5300 • www.capstoneturbine.com ©2013 Capstone Turbine Corporation. P1213 Case Study CAP421PDF Image | Government/Municipal Eastern Municipal Water District
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