Laserfiche WebLink
18 Job No. 2669.01 Water Systems Alternative Energy Feasibility Study <br />Figure 4 <br />SA -3 Proposed Configuration <br />New Vault <br />® New Construction <br />When the Agency needs 8 CFS through this station it would open flow through the turbine, using a combination <br />of the automated valve and the wicket gates to minimize sudden pressure changes. The existing PRV could be <br />kept at a higher setpoint so that it does not typically operate unless there were an unusual demand for water at <br />this point. The control valve and wicket gates would be remotely operated to shut down flow in the turbine <br />when appropriate as well. <br />The electricity generated by the hydro turbine at this location cannot offset an adjacent City of Santa Ana load, <br />as the only electric load at this location is instrumentation and lighting. It is anticipated that the generated <br />electricity will be used to off -set another city meter through the Renewable Energy Self -generation Bill Credit <br />Transfer mechanism know as RES BCT. This allows the value of electricity generated by the turbine to be <br />metered by SCE on a TOU-GS-1 rate schedule. The dollar value of this electricity can be used to offset the <br />generation component at one or more city electric meters. <br />The anticipated generation of electricity from this turbine at 8 CFS and the standard pressure drop means it will <br />generate the same average electric output as the SA -1 installation, 132 kW. In the case of SA -3, the anticipated <br />full load hours of operation are expected to be 4,068 hours per year, so the anticipated energy generation is <br />536,976 kWh per year. <br />The monetary value for this savings based on the RES -BCT Generation portion of the TOU-GS-I-LG rate schedule <br />is $31,965 per year. The electricity is worth about $0.06 per kWh through the RES -BCT program. <br />If this project were approved by SCE as a NEMA project, the value of the electricity generated at the TOU-GS-1-E <br />rate schedule would be approximately $0.14 per kWh, more than doubling the monetary savings. <br />CITY OF SANTA ANA 19H-26 Newcomb I Anderson I McCormick <br />