How much power would I save?

by DJstar

If I replaced one of those 4 watt night lights with a 1 watt led light, how much money would I save?

Lina's response:
let's assume:
- Your electric rate from your utility company is $0.10 per 1,000 Watt-Hours or $0.10 per kWh
- The light is on for 10 hrs each night, 365 days per year

your money savings per year would be:
(4watts - 1watt) x 10 hours per day x 365 days x $0.10 per kWh / 1,000 watts = $1.095 per year

Savings = $1.10 per year

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