Smart Lighting Energy Savings: Do They Actually Save Money?
Smart bulbs cost more upfront. Do they actually save energy and money in the long run?
For bulb recommendations, see our guide to Best Smart Light Bulbs.
The Short Answer
Smart bulbs themselves don’t use less energy than regular LED bulbs. The savings come from smarter
usage—turning off when not needed, dimming, and scheduling.
Energy Usage Comparison
| Bulb Type | Watts (60W equivalent) | Annual Cost (3hrs/day) |
|---|---|---|
| Incandescent | 60W | $7.90 |
| CFL | 13W | $1.70 |
| Regular LED | 9W | $1.18 |
| Smart LED | 9-10W | $1.18 + standby |
(Assumes $0.12/kWh electricity rate)
The Standby Power Issue
Smart bulbs use a small amount of power even when “off” to maintain network connectivity:
- WiFi bulbs: 0.3-0.5W standby
- Zigbee bulbs: 0.1-0.3W standby
Annual standby cost per bulb: $0.30-0.50
This is negligible compared to savings from automation.
Where Smart Lights Actually Save Energy
1. Automatic Off When Not Needed
Lights that turn off when you leave home or after motion timeout save significant energy.
Example: Light left on 8 extra hours daily → $3.50/year waste per bulb. Automation eliminates this.
2. Dimming
Dimmed lights use less energy. At 50% brightness, you use roughly 50% power.
Example: Dimming evening lights to 50% saves $0.60/year per bulb.
3. Scheduling
Lights that turn off at bedtime or when not needed prevent “left on overnight” waste.
4. Occupancy Sensing
Motion sensors turn lights off in empty rooms (bathrooms, closets, hallways).
Real Savings Calculation
| Scenario | Annual Savings/Bulb |
|---|---|
| No automation (just smart) | $0 (same as LED) |
| Auto-off when leaving | $2-5 |
| Dimming to 50% evenings | $0.50-1 |
| Motion timeout in bathroom | $3-8 |
| Combined typical | $3-10/bulb |
Payback Period
| Smart Bulb | Extra Cost vs LED | Payback (at $5/yr savings) |
|---|---|---|
| Wyze ($12) | $7 | 1.4 years |
| Nanoleaf ($20) | $15 | 3 years |
| Philips Hue ($50) | $45 | 9 years |
Budget smart bulbs pay back quickly. Premium bulbs are harder to justify on energy savings alone—you’re paying for
features and reliability.
Beyond Energy: Other Savings
Bulb Lifespan
LEDs (smart or not) last 15,000-25,000 hours. That’s 14-23 years at 3 hours/day.
Convenience Value
Hard to quantify, but voice control, automation, and scenes have real value.
How to Maximize Savings
- Automate “away” mode: Lights off when nobody’s home
- Add motion sensors: Bathroom, closet, hallway—auto off after timeout
- Schedule bedtime off: All lights off at midnight
- Dim in evenings: Automatically reduce to 50-75% after sunset
- Zone heating bonus: In rooms with smart thermostats, occupancy sensing can inform heating
Verdict
Smart bulbs don’t save energy by themselves. The savings come from automation—turning off when not
needed, dimming, and motion sensing.
With proper automation, expect $3-10 annual savings per bulb. Budget smart bulbs ($12) pay back in 1-2 years. Premium
bulbs ($50) are about convenience and features, not energy savings.
For bulb recommendations, see: Best Smart Light Bulbs.