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How Much Does It Cost to Run a Smart Speaker in California? (2026)

Smart speakers listen constantly and draw 2 to 4 watts idle, rising slightly when playing music. Each one adds around 20 to 30 kWh a year, which matters mainly if you have many.

A typical smart speaker (3 W) costs $0.001 per hour, or about $0.76 per month at 24 hours a day in California. Cheap to run

WattagePer hourPer dayPer monthPer year
Low (2 W)$0.001$0.017$0.50$6.13
Typical (3 W)$0.001$0.025$0.76$9.20
High (6 W)$0.002$0.050$1.51$18.40

Formula: watts ÷ 1000 × hours × price per kWh. Typical use is 24 h/day ≈ 26 kWh per year.

In California, with electricity at $0.35 per kWh (source: EIA Table 5.6.A, 2026-06), a typical smart speaker costs $0.001 per hour and about $9.20 per year at 24 hours a day. That is about 94% more than the US national average of $0.39 per month, because electricity in California costs $0.35 per kWh against $0.18 nationally. Each $1.00 of electricity buys roughly 952.4 hours of use.

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How to lower the cost of running a smart speaker

In standby it draws about 2 W, which adds roughly 18 kWh ($6.13) per year if it is never unplugged.

Frequently asked questions

How much electricity does a smart speaker use?

About 25 kWh a year at 3 watts continuous.

Does a smart speaker use power when not playing?

Yes. Idle draw is most of its consumption since it listens all the time.

Should I unplug my smart speaker at night?

Only if you have several. The saving per speaker is small.

Cost by region

Related appliances

Use the generic electricity cost calculator →