What's that light cost you?
- Select your electric rate (or click to enter your own)
- You can calculate results for up to four types of lights. For each:
- Select the type of lamp (i.e. Incandescant, Fluorescent, etc.)
- Select the lamp wattage (lamp lumens)
- Enter the number of lights in use
- Select how long the lamps are in use (or click to enter your own; enter hours on per year).
- Finally, click Submit.
The Dark Sky Society (DSS) is based on Long Island, NY. Membership is free and open to anyone interested in preserving the natural star-filled night sky and fighting the intrusion of light pollution.