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How Much Does It Cost to Run a Cable or Fiber Modem in New York? (2026)

A modem runs all day at 5 to 15 watts. Combined with a separate router the pair uses around 15 to 25 watts continuously, roughly 150 to 200 kWh a year.

A typical cable or fiber modem (8 W) costs $0.002 per hour, or about $1.67 per month at 24 hours a day in New York. Cheap to run

WattagePer hourPer dayPer monthPer year
Low (5 W)$0.001$0.035$1.04$12.70
Typical (8 W)$0.002$0.056$1.67$20.32
High (15 W)$0.004$0.10$3.13$38.11

Formula: watts ÷ 1000 × hours × price per kWh. Typical use is 24 h/day ≈ 70 kWh per year.

In New York, with electricity at $0.29 per kWh (source: EIA Table 5.6.A, 2026-06), a typical cable or fiber modem costs $0.002 per hour and about $20.32 per year at 24 hours a day. That is about 61% more than the US national average of $1.04 per month, because electricity in New York costs $0.29 per kWh against $0.18 nationally. Each $1.00 of electricity buys roughly 431.0 hours of use.

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How to lower the cost of running a cable or fiber modem

Frequently asked questions

How much electricity does a modem use per month?

Around 6 kWh a month at 8 watts continuous.

Is it worth turning off the modem at night?

It saves about 2 to 3 kWh a month. Most people find it not worth the hassle.

Do fiber ONTs use less power than cable modems?

Usually a little less, typically 5 to 8 watts.

Cost by region

Related appliances

Use the generic electricity cost calculator →