Smart LED roofline lighting costs $25–$40/year in electricity for a typical home running 6 hours per night, 365 days. That's less than a 60-watt porch light. Per-hour operating cost: roughly $0.01. The energy argument against permanent lighting doesn't hold up to actual math.
The real numbers
| Metric | Value |
|---|---|
| Total system wattage | 80–120 watts |
| Hours per night | 6 (sunset to midnight) |
| Daily energy use | 0.48–0.72 kWh |
| Monthly energy use | 14.4–21.6 kWh |
| Monthly cost (at $0.13/kWh) | $1.87–$2.81 |
| Annual cost | $22–$34 |
Why LEDs are so efficient
LEDs convert about 90% of their energy into light. Incandescent bulbs convert only about 10% — the rest becomes heat. An LED node producing the same perceived brightness as a 7-watt incandescent C9 bulb uses only about 0.07 watts. A 150-foot roofline with 900 LED nodes at 0.07 watts each uses just 63 watts total — less than a standard light bulb.
Different colors use slightly different amounts of energy (warm white = baseline, red uses ~70%, green ~65%) but the differences are pennies per month. See Christmas lights energy costs for a full seasonal vs. permanent comparison.
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Comparison: smart lighting vs. alternatives
| Lighting Type | Annual Cost (6 hrs/night) |
|---|---|
| Smart LED roofline (150 ft) | $25–$40 |
| Two 60W porch lights | $34 |
| Motion-sensor floodlight (average use) | $15–$25 |
| Incandescent Christmas lights (seasonal, 60 days) | $20–$70 |
| Landscape lighting (8 fixtures) | $15–$30 |
| Smart roofline + landscape | $40–$70 |
The environmental angle
LED manufacturing has a lower lifetime environmental impact than incandescent. 15–20 year lifespan means less waste than annual seasonal light replacement. Low energy consumption means lower carbon footprint. No toxic materials (unlike some older lighting technologies).
Learn more about the complete smart lighting system in how permanent lights work.
Frequently Asked Questions
Almost certainly not. At $2–$3/month, it's within the normal variation of your monthly bill.
Yes, but marginally. Using a timer (sunset to midnight) vs. leaving them on all night saves about $10–$15/year.
The controller draws minimal standby power (~2–5 watts). Annual standby cost: about $3–$5.
Written by Trey, Owner — Heartland Holiday Lights
Trey is a Council Bluffs local and hands-on installer who designs and installs every permanent smart-lighting system Heartland Holiday Lights puts on homes across Western Iowa and the Omaha metro. When he writes about rooflines, channel, and controllers, it's because he's on the roof doing the work.
See what permanent lighting looks like on your home
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