How Much Does It Cost to Run a Cable or Fiber Modem in British Columbia? (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 C$0.001 per hour, or about C$0.73 per month at 24 hours a day in British Columbia. Cheap to run

Hours used per day
WattagePer hourPer dayPer monthPer year
Low 5 WC$0.001C$0.015C$0.45C$5.52
Typical 8 WC$0.001C$0.024C$0.73C$8.83
High 15 WC$0.002C$0.045C$1.36C$16.56

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

One day of a cable or fiber modem (0.19 kWh) is the same electricity as

Electricity per year at typical use, on a log scale: #26 of 95 appliances, from least to most.

In British Columbia, with electricity at 12.6¢ per kWh (source: Hydro-Québec 2025 comparison, 2025-04), a typical cable or fiber modem costs C$0.001 per hour and about C$8.83 per year at 24 hours a day. That is about 10% less than the national average for Canada (C$0.81 per month), because electricity in British Columbia costs 12.6¢ per kWh against 14.0¢ nationally. Each C$1.00 of electricity buys roughly 992.1 hours of use.

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

US states
Canadian provinces

Related appliances

Use the generic electricity cost calculator · Which uses more? Take the quiz