WattCost

Data through June 2026

Cost to run · California · 34.7¢/kWh residential average

How much does it cost to run a computer monitor in California?

$16/yr · median certified model

At 34.7¢/kWh, California ranks among the priciest states for power. The typical certified computer monitor runs about $16 annually here, which makes choosing an efficient model worth actual dollars, not rounding error.

California sits at rank 50 of 51 — near the very top of the cost table for a computer monitor. Model choice matters as much as geography: at California rates the most efficient certified model (Acer PE140WU_z) costs $3.86 a year while the most power-hungry (PLANAR 2E0I1) costs $140 — a spread of $136 every year. For reference, the national extremes are Nevada (13.1¢/kWh) and Hawaii (52.7¢/kWh); the same median computer monitor would cost $5.90 and $24 a year there.

California
$16
US average
$8.26
Nevada
$5.90
Hawaii
$24
Median certified computer monitor (45 kWh/yr) per year, at each rate

The cheapest computer monitors to run at California rates

Top 10 by certified kWh, priced at 34.7¢/kWh
#ModelkWh/yr$/yr in CA
1Acer PE140WU_zmost efficient11$3.86
2ELO ET1304LSN13$4.43
3HP HP E14 G4most efficient13$4.44
4DELL P1424Hf13$4.67
5VAIO VJ5VP141XXXXmost efficient14$4.96
6Wacom One DTC14114$5.03
7PLANAR PM16-S14$5.03
8EIZO FlexScan FLTmost efficient15$5.08
9MSI PRO MP161 E2most efficient15$5.22
10ASUS MQ16FCmost efficient15$5.30

Price any model at California rates

Your rate, your numbers

Per day
4¢
Per month
$1.30
Per year
$16

45 kWh/yr × 34.7¢/kWh = $16/yr

Prefilled with the median certified computer monitor (45 kWh/yr). Every model page on this site carries its exact certified figure.

Questions, answered with the data

How much does it cost to run a computer monitor in California?
About $16 a year for the median ENERGY STAR certified computer monitor, at California's average residential rate of 34.7¢/kWh — that's $1.30 a month.
Is electricity expensive in California?
California's residential average of 34.7¢/kWh is 89% above the U.S. average of 18.3¢/kWh, ranking 50 of 51 jurisdictions (1 = cheapest).
What's the cheapest computer monitor to run in California?
Among currently certified models, the Acer PE140WU_z costs the least at about $3.86 a year at California rates (11 kWh/yr).
How does California compare with other states?
The same median computer monitor costs $5.90 a year in Nevada (the cheapest state) and $24 in Hawaii (the priciest). California sits at $16.

Keep digging

Rate source: US EIA, average residential price of electricity, see methodology.