LED Savings Calculator
Number of Bulbs
Old Wattage (W)
LED Wattage (W)
Hours/Day
Rate ($/kWh)
✓Savings
Annual Saving
$279.22
Energy Reduction
85%
Monthly Saving
$23.27
LED bulbs use 75–90% less energy than incandescent bulbs and last 15–25× longer. This calculator quantifies the annual financial savings from switching.
- 1Annual saving = (Old W − LED W) / 1000 × Hours/day × 365 × Rate × Bulbs
- 260W incandescent → 9W LED (85% energy saving)
- 3LED lifespan: 15,000–25,000 hours vs 1,000 (incandescent)
- 4Payback period usually under 1 year at typical electricity prices
12 bulbs: 60W→9W, 5h/day, $0.30/kWh=Annual saving = 12×51W×5×365×$0.30/1000 = $335
| Type | Wattage equiv. | Lifespan | Annual cost (5h, $0.30) |
|---|---|---|---|
| Incandescent | 60W | 1,000h | $32.85 |
| Halogen | 43W | 2,000h | $23.56 |
| CFL | 13W | 8,000h | $7.12 |
| LED | 9W | 25,000h | $4.93 |
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