LED Lighting Savings Calculator

Calculate savings from switching to LED bulbs. Compare LED vs incandescent and CFL costs, see payback period, and estimate annual energy savings.

W
hrs
$ /kWh
$

Quick Facts

LED Energy Use
85% less energy
vs incandescent bulbs
LED Lifespan
25,000 hours
25x longer than incandescent
Avg US Electricity Rate
$0.15/kWh
Varies by location
Typical Payback
3-6 months
For heavy-use bulbs

LED Savings Analysis

Calculated
Annual Savings
$0
Per year energy savings
Payback Period
0
Time to recoup investment
10-Year Savings
$0
Total long-term savings

Detailed Breakdown

Bulbs Replaced -
Energy Reduction -
LED Investment -
Annual Energy Saved -
10-Year Energy Savings -
10-Year Bulb Replacement Savings -

Light Bulb Comparison

Type Wattage Lifespan Cost
Incandescent 60W 1,000 hrs $1
Halogen 43W 2,000 hrs $2
CFL 13W 8,000 hrs $2
LED 9W 25,000 hrs $2-5

LED Benefits

  • 85% less energy: vs incandescent bulbs
  • 25x longer life: 25,000 vs 1,000 hours
  • No heat waste: Cooler operation
  • Instant on: No warm-up time
  • Dimmable options: Many models available

When to Switch

LEDs are almost always worth switching to immediately due to energy savings, even if your current bulbs still work. The energy savings alone pay for the LED cost within months.

Frequently Asked Questions

How accurate are the results?
The LED Lighting Savings applies a standard formula to your inputs — accuracy depends on how precisely you measure those inputs. For planning and estimation, results are reliable. For high-stakes or professional decisions, cross-check the output with a domain expert or primary source.
What inputs have the biggest effect on the result?
In most financial calculations, the variables with the highest sensitivity are the rate (interest, return, or tax) and time. Try adjusting each by 10-20% to see which one moves the output most — that's where your energy in improving the input estimate is best spent.