University City MO - Street Light Audit Report

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72 175 watt MH bulbs = 12600 watts -- 72 55 watt LED retrofits = 3960 watts This results in a 69% savings in the energy used for these light This is only one of many options that are being explored. A pilot project is being proposed for Parking Lot 3. There are 4 250 watt HPS bulbs in lights located in parking lot 3. The retrofit options for these lights include LED and Ceramic Metal Halide. The three main options include: 120 watt Holophane LEDgend (LED) which equals a 52% energy savin* for these lights 140 watt Holophane Estilo (CMH) which equals a 44% energy saving* for these lights 130 watt Philips Roadstar (LED) which equals a 48% energy savings* for these lights *The energy savings only take into account the energy of the bul driver/ballast. If the total rated wattage were used, the % ene There are other retrofit options being explored for the lights o limited to the Wellesley Tunnel, parking garage lights, and parking lot 4 lights. University City owned lights only account for 1% of the total lied lights, which account for 99% of lighting energy use and costs are the lights focused on f this report. AMEREN OWNED LIGHTS Many options were researched for energy and cost savings. Retrofitting the lights to LED, Induction, Ceramic Metal Halide, Metal Halide, or lower wattage HPS were explored. However, these options are currently not applicable to the Ameren owned lights. Ameren has many restrictions regarding bulb types, fixture types, etc. Options to reduce energy and costs of Ameren owned lights are very limited. Decommissioning lights and retrofitting bulbs are the main options outside of the acquisition of the entire Ameren lighting system. 17 Page