Enter your data and click another cell to see
the calculated results.

Enter your current incandescent
lighting usage in this column ...

Suggested High-efficiency Fluorescent
replacement

bulbs rated watts each, on for
hours/day

bulbs rated watts each, on for
hours/day

bulbs rated watts each, on for
hours/day

bulbs rated watts each, on for
hours/day

bulbs rated watts each, on for
hours/day

bulbs rated watts each, on for
hours/day

bulbs rated watts each, on for
hours/day

bulbs rated watts each, on for
hours/day

bulbs rated watts each, on for
hours/day

Results

Based on the specifications above, you could achieve the following
savings by replacing your standard incandescent lights with high-efficiency
fluorescent units:

Energy Costs

Your current lighting uses about kW-hours/year costing .
The suggested fluorescents would use about kW-hours/year costing .

Bulb Replacement Costs

You probably replace normal bulbs per year, costing .
Expect to replace fluorescents per year, costing .

Total Costs/Savings

Changing to high-efficiency fluorescents will save you a
total of
per year.

Base Costs

The above calculations are based on the following assumed
costs for electricity and replacement lighting. If your costs
are different, you can plug in your own costs and see the difference.