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Guide

Compare LED vs. Incandescent Bulb Costs

Compare LED vs. incandescent bulb costs: daily, monthly, and annual operating cost from watts and hours—plus LED purchase price and payback for a single fixture swap.

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Incandescent bulbs look cheap at checkout; LEDs win on the meter. This guide shows how to compare LED vs. incandescent bulb costs—operating dollars, kWh, and payback—before you relabel every socket in the house.

Benefits

  • Side-by-side daily and annual cost for legacy vs. LED at your $/kWh rate.
  • Typical swap: 60 W incandescent vs. ~9 W LED with matched lumens.
  • Includes payback days so upfront LED price meets operating savings.

How it works

  1. Enter incandescent (or halogen) watts as legacy draw and LED replacement watts.
  2. Set hours per day, electricity rate, and LED bulb purchase price.
  3. Compare daily/monthly/annual cost bars and read payback to break even on the LED.

FAQ

How do I compare LED vs. incandescent bulb costs?

Operating cost/day = watts × hours ÷ 1000 × $/kWh. Example: 60 W × 5 h ÷ 1000 × $0.14 = $0.042/day incandescent; 9 W LED same hours = $0.0063/day. Annual gap ≈ $13/year per socket—multiply by fixture count for whole-home savings.

Is the LED bulb purchase price included?

Yes—payback days = LED price ÷ daily operating savings. A $4 LED saving $0.036/day pays back in about 111 days; after that, lower operating cost is pure savings until the LED is replaced.

What about halogen or CFL?

Use legacy watts for whatever bulb is in the socket today—halogen often 40–50 W for a “60 W equivalent.” The comparison math is the same: lower watts × same hours × rate = lower cost.

Technical specifications

  • Daily cost = (watts × hours/day ÷ 1000) × $/kWh.
  • Annual cost ≈ daily cost × 365.
  • Cost delta/day = legacy daily − LED daily.
  • Related: led-vs-incandescent-roi, appliance-daily-cost, vampire-power-cost.

Sticker price vs. meter price

Incandescent bulbs cost less per unit but burn more watts per lumen. Comparing bulb costs means stacking purchase price and operating cost—LEDs front-load dollars at the register and return them on the utility bill. High-use rooms show the gap in weeks, not years.

Count the sockets

One $13/year savings socket is noise; twenty kitchen and living-room cans are a line item on your annual budget. Run the comparison per fixture, then multiply by count. Pair with lighting circuit load tools if you are also checking breaker headroom after a full retrofit.