Outdoor Lighting Costs

See how the following outdoor lighting choices compare:

EFFICIENT OUTDOOR LIGHTING COSTS
Type Wattage Lumens (light output) Annual Cost to Use Annual Savings vs. Incandescent of Similar Brightness
4 hr/ night dusk to dawn
LED or compact fluorescent 15 925 $3.07 - $9.19
- $8.43 $25.30
LED or compact fluorescent 23 1,290 $4.70 -
$10.63
- $8.07 $29.23
High-pressure sodium 35 2,025 - $13.52 $64.64

Assumptions: Dusk-to-dawn lighting operates an average of 11 hours per night. Electricity at 14¢ per kWh.