Project #4:
Replace 4-foot T-12 (w/ standard magnetic ballast) with T-8 (electronic
ballast) Fluorescent Tubes
Project Facts:
Number of Units: 1,000
Estimated cost = 1,000 units x $60/unit = $60,000
Hours of Operation = 10 hrs/day, 5 days/week = 2,400 hours
Average Electric Rate = $0.10 kWh
Energy Savings per unit Replacement = 0.060 kW/unit
Energy Savings Calculation:
Annual Energy Savings = 0.060 kW/unit x 1,000 units x 2,400 hours =
144,000 kWh
Annual Energy Savings = 144,000 kWh x $0.10/kWh = $14,400
Project Economics (w/o Incentives):
Simple Payback = ($60,000/$14,400) = 4.2 years