how much does it cost to run a street light
Report Abuse. Assume that a typical street light requires about 150 watts of power and burns an average of 12 hrs per day. That comes to 1800 watt-hours, or 1.8 kW-hrs.Further assume that electricity costs about $0.11 per kW-hr.With these assumptions, the daily cost of electricity is about $0.20, and the average hourly cost would be a little less than a penny.hile a 150-watt sodium vapor light throws a lot of light, and many boxy light packs on the sides of buildings are that wattage, I believe street lights are closer to 300 watts in power consumption.