Parshield visor Parshield®

What's that light cost you?

    Instructions
  1. Select your electric rate (or click to enter your own)
  2. You can calculate results for up to four types of lights. For each:
    1. Select the type of lamp (i.e. Incandescant, Fluorescent, etc.)
    2. Select the lamp wattage (lamp lumens)
    3. Enter the number of lights in use
    4. Select how long the lamps are in use (or click to enter your own; enter hours on per year).
  3. Finally, click Submit.

Rates
Type
Lamps
Number
Usage