U.S. residential electricity EIA data: July 2026 US average 18.3¢/kWh Updated
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Home Office · Pennsylvania

How Much Does It Cost to Run a Desktop Computer in Pennsylvania?

The short answer

A typical 150W desktop computer costs about $0.03 per hour to run in Pennsylvania, or $7.93 a month at 8 hours a day.

Pennsylvania’s average residential rate was 21.7¢ per kWh in July 2026 (EIA), 19% above the US average.

Source: U.S. EIA, July 2026 data · Updated

Desktop Computer cost by daily use in Pennsylvania

Cost at 21.7¢/kWh, the Pennsylvania average (EIA, Jul 2026)
Daily usekWh/monthPer dayPer monthPer year
1 hour/day 4.6 $0.03 $0.99 $11.89
2 hours/day 9.1 $0.07 $1.98 $23.78
4 hours/day 18.3 $0.13 $3.96 $47.57
8 hours/day 36.5 $0.26 $7.93 $95.13
12 hours/day 54.8 $0.39 $11.89 $143
24 hours/day 109.5 $0.78 $23.79 $285

Pennsylvania vs other states

At typical use, a desktop computer costs $95.13 a year in Pennsylvania — $115 less than in Hawaii and $39.42 more than in Louisiana.

Pennsylvania has the 14th-most-expensive residential electricity of the 50 states and DC. Pennsylvania electricity rates · all states ranked

Electricity price trend in Pennsylvania

21.7¢/kWh in July 2026 — ▲ +11.3% from a year earlier.

How to lower the cost of running a desktop computer

Everyday desktop use — browsing, documents, video calls — is light work for a modern PC, so most office desktops plus a monitor draw around 100–200W. Workstations rendering video or running heavy software use more. Sleep mode drops consumption to just a few watts, so letting the computer sleep when you step away makes a real difference over a year.

  • Set the computer to sleep after 15–30 minutes and the display after 5–10 minutes.
  • Turn off the whole setup with a power strip at the end of the day.
  • Lower monitor brightness — it often accounts for a big share of the total.

Questions

Frequently asked questions

How much does it cost to run a desktop computer for 24 hours in Pennsylvania?

Running a 150W desktop computer for 24 hours uses about 3.60 kWh, which costs about $0.78 at Pennsylvania’s average rate of 21.7¢/kWh.

How many kWh does a desktop computer use per month?

At 8 hours a day, a typical desktop computer uses about 36.5 kWh a month. In Pennsylvania that costs $7.93.

Is it expensive to run a desktop computer in Pennsylvania?

Pennsylvania has the 14th-most-expensive residential electricity of the 50 states and DC at 21.7¢/kWh — pricier than most. Running a desktop computer here costs about $95.13 a year at typical use, compared with $80.20 at the national average rate.

What is the electricity rate in Pennsylvania right now?

The average residential electricity rate in Pennsylvania was 21.7¢ per kWh in July 2026, according to the latest EIA data — up 11.3% from a year earlier.

Desktop Computer costs in nearby states

Cheapest and priciest states

Comparisons

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