Question: Class Activity A facility wants to upgrade its lighting system by replacing 50 existing lamps with LEDs. The existing lamp consumes 280watts with ballast, the

Class Activity A facility wants to upgrade its lighting system by replacing 50 existing lamps with LEDs. The existing lamp consumes 280watts with ballast, the LED wattage per lamp is 120watts. The LEDs have an in-built occupancy sensor and operates for 10hours daily. Assuming the electricity source that supplies the facility's electricity has an emission factor of 800g. Co,e/kWh and the energy cost is $0.10/kWh, while the demand charge is $8/kW-month. Calculate the annual & lifetime energy savings and CO, savings (LED has 14 years lifespan). Also calculate the payback period, given that the installation cost for the LED is $120 each

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