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<br /> <br /> <br />4.1.R <br />ETROFIT BULBS <br />The majority of street lights are owned by Ameren and retrofittilight bulbs is restricted by the bulbs <br />offered by Ameren. If this was not the case, a bulb with a better scotopic rating/lower energy consumption <br />would be suggested. The most energy efficient light bulb that Ameren currently offers for the majority of <br />applications is a 100 Watt 9500 bulb. Despite these limitations, there are higher wattage bulbs which can <br />be replaced with lower wattage bulbs. <br />TABLE 7: RETROFIT ENERGY ANALYSIS <br />Current KWH Proposed <br />per year KWH per <br />Current Proposed <br />(4000 year (4000 <br />Current Bulb Type Proposed Bulb Type <br />burning burning <br />Quantity Quantity <br />hours per hours per <br />year) year) <br />3600 3600 <br />2 <br />400 WATT MH Flood Lights <br />no change <br />1016 1016 <br />2 <br />100 WATT MV Post Top lights <br />no change <br />2880 <br />4968 100 WATT HPS 6 <br />6 <br />175 WATT MV Open Bottom lights <br />9600 9600 <br />20 <br />100 WATT HPS Open Bottom lights <br />no change <br />31928 <br />50128 250 WATT HPS 26 <br />26 <br />400 WATT HPS Cobra lights <br />24000 <br />100 WATT HPS 50 <br />100 <br />182000 <br />400 WATT MV Cobra lights <br />61400 <br />250 WATT HPS 50 <br />199 95520 <br />164772 100 WATT HPS 199 <br />175 WATT MV Post Top lights <br />435 208800 <br />360180 100 WATT HPS 435 <br />175 WATT MV Cobra lights <br />308228 <br />250 WATT HPS 251 <br />551 <br />676628 <br />250 WATT HPS Cobra lights <br />144000 <br />100 WATT HPS 300 <br />315840 <br />315840 <br />658 <br />100 WATT HPS Post Top lights <br />no change <br />641760 <br />641760 <br />1337 <br />100 WATT HPS Cobra lights <br />no change <br />Totals*: 3336 2410492 3336 1848572 <br /> <br /> <br />*Totals do not include 3 lights with unknown bulb type <br />% reduced energy usage in KWH: 23% <br /> <br /> <br /> <br />22 <br />Page <br /> <br />