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Mr. Mark Casey <br />January 6, 2017 <br />Page 3 <br /> <br /> <br />Cost Analysis <br /> <br />In any retrofit of lighting there should be an analysis of costs. The switch from standard HPS to LED <br />lighting will save energy costs, but the initial purchase cost of LED fixtures is more expensive. However, <br />LED lights have a much longer life than HPS bulbs. Using the following facts, a quick analysis can be <br />performed. <br /> <br /> Since all poles are being replaced whether there is a switch to LED or not, the cost of poles is not <br />a comparative factor. <br /> Cost of an 250 watt HPS head is roughly $300 each <br /> LED light head and bulb fixtures average $1000 each <br /> Bulbs for 250 watt HPS lights are about $25 each <br /> 250 watt HPS bulbs last about 5 years <br /> Boom truck and personnel for bulb replacement is about $175 per hour <br /> Each bulb replacement takes about 1 hour with set up and traffic control <br /> LED lights last about 20 years <br /> The LED lights proposed will use about half of the energy of 250 watt HPS lights <br /> 250 watt HPS lights now cost about $6/month for energy <br /> <br />20 YEAR COST PER LIGHT <br /> <br />LED <br />Cost of Fixture $1000 <br />Energy Costs <br /> $3/month x 12 months x 20 years $720 <br /> TOTAL $1720 <br /> <br />250 watt HPS <br />Cost of Fixture $300 <br />Energy Costs <br /> $6/month x 12 months x 20 years $1440 <br />Bulb replacement costs (once every 5 years) <br /> Bulb $25 x 4 $100 <br /> Labor $175 x 4 $700 <br /> TOTAL $2540 <br /> <br /> <br />Attachments