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

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

The short answer

Running a 150W desktop computer in Mississippi costs about $0.02 an hour. At 8 hours a day, that’s roughly $5.31 a month and $63.69 a year.

That’s based on Mississippi’s average residential rate of 14.5¢/kWh (EIA, July 2026), 21% below the US average.

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

Desktop Computer cost by daily use in Mississippi

Cost at 14.5¢/kWh, the Mississippi average (EIA, Jul 2026)
Daily usekWh/monthPer dayPer monthPer year
1 hour/day 4.6 $0.02 $0.66 $7.96
2 hours/day 9.1 $0.04 $1.33 $15.92
4 hours/day 18.3 $0.09 $2.65 $31.84
8 hours/day 36.5 $0.17 $5.31 $63.69
12 hours/day 54.8 $0.26 $7.96 $95.53
24 hours/day 109.5 $0.52 $15.92 $191

Mississippi vs other states

At typical use, a desktop computer costs $63.69 a year in Mississippi — $147 less than in Hawaii and $7.97 more than in Louisiana.

Mississippi has the 12th-cheapest residential electricity of the 50 states and DC. electricity prices in Mississippi · all states ranked

Electricity price trend in Mississippi

14.5¢/kWh in July 2026 — ▲ +7.1% 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 Mississippi?

Running a 150W desktop computer for 24 hours uses about 3.60 kWh, which costs about $0.52 at Mississippi’s average rate of 14.5¢/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 Mississippi that costs $5.31.

Is it expensive to run a desktop computer in Mississippi?

Mississippi has the 12th-cheapest residential electricity of the 50 states and DC at 14.5¢/kWh — cheaper than most. Running a desktop computer here costs about $63.69 a year at typical use, compared with $80.20 at the national average rate.

What is the electricity rate in Mississippi right now?

The average residential electricity rate in Mississippi was 14.5¢ per kWh in July 2026, according to the latest EIA data — up 7.1% from a year earlier.

Desktop Computer costs in nearby states

Cheapest and priciest states

Comparisons

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