Your facility has 20 Lights (Fixture Quantity) that currently have 100 watt incandescent bulbs installed.

You are planning on replacing 100 Watt Bulbs (Fixture Wattage for Each) with 23 Watt CFL Bulbs (Fixture Wattage for Each)

2000 Hours (Hours of Usage)

$.10 Per Kilowatt/Hr (Average Energy Rate Charged)

## How much does it cost annually for 20 - 100 Watt Bulbs?

**20 (Fixtures) x 100 (Watts Each) = 2000 Watts**

**2,000 Watts / 1000 = 2 kw (Kilowatt)**

**2 kw x 2000 hrs per year = 4000 kwh (Kilowatt/Hour)**

**4000 kwh x $.10 = $400**

**$400** to operate 20 lamps with 100 Watt Bulbs

## How much does it cost annually to operate 20 - 23 Watt Bulbs?

**20(Fixtures) x 23 (Watts Each) = 460 Watts**

**460 Watts / 1,000 = .46 Kw (Kilowatt)**

**.46 Kw x 2000 hrs per year = 920 kwh (Kilowatt Hour)**

**920 kwh x $.10 = $92.00**

**$92** to operate 20 lamps with 23 Watt Bulbs

*The Difference is $308 Annual Savings*

## Which Bulb is More Energy Efficient?

The 23 Watt CFL bulb cost $4.60 ($92 / 20 = $4.60) annually compared to $20 ($400 / 20 = $20.00) for a 100 Watt Incandescent bulb.

$4.60 versus $20.00....is that convincing enough to consider changing out your existing light bulbs? Still not sure?

**YES**, the 23 Watt CFL bulb is much more energy efficient than a 100 watt incandescent.

**YES**, the 23 Watt CFL bulb is much more energy efficient than a 100 watt incandescent.

## Forget the Calculations and Call Hovey Electric...We Help Companies Become More Energy Efficient

If your still confused about energy efficient technologies? Here is one of our articles that get's right back to the basics, check it out....

See my article "Watts" a Watt? If you want to see how to take this calculation further and calculate your energy savings from a new system upgrade...or...

## Learn More About Energy Efficient Lighting

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