Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
AOC 20E1
At the standardized usage ENERGY STAR assumes, the AOC 20E1 consumes 30 kWh a year — about $5.56 at the U.S. average electricity rate ($0.46 a month). Only a handful of certified computer monitors do better: it ranks 118 of 1530 and undercuts the median by 33%. The same unit costs $3.97 a year in Nevada but $16 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$5.56/yr
- Per month
- $0.46
- Per day
- 2¢
- Certified use
- 30 kWh/yr
- Screen size
- 19.5 in
- Panel
- TFT LCD
- On-mode power
- 9.57 W
- Sleep-mode power
- 0.17 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $4.97 | |
| Alaska | 28.2¢ | $8.55 | |
| Arizona | 15.2¢ | $4.60 | |
| Arkansas | 14.1¢ | $4.28 | |
| California | 34.7¢ | $11 | |
| Colorado | 17.1¢ | $5.19 | |
| Connecticut | 24.3¢ | $7.37 | |
| Delaware | 19.3¢ | $5.85 | |
| District of Columbia | 24.4¢ | $7.39 | |
| Florida | 15.1¢ | $4.58 | |
| Georgia | 16.4¢ | $4.96 | |
| Hawaiipriciest | 52.7¢ | $16 | |
| Idaho | 14.4¢ | $4.36 | |
| Illinois | 19.9¢ | $6.03 | |
| Indiana | 17.5¢ | $5.31 | |
| Iowa | 15.9¢ | $4.83 | |
| Kansas | 15.7¢ | $4.76 | |
| Kentucky | 14.3¢ | $4.32 | |
| Louisiana | 13.5¢ | $4.09 | |
| Maine | 29.6¢ | $8.97 | |
| Maryland | 21.8¢ | $6.62 | |
| Massachusetts | 29.6¢ | $8.97 | |
| Michigan | 23.0¢ | $6.97 | |
| Minnesota | 17.5¢ | $5.31 | |
| Mississippi | 14.9¢ | $4.51 | |
| Missouri | 16.2¢ | $4.92 | |
| Montana | 15.1¢ | $4.59 | |
| Nebraska | 13.3¢ | $4.02 | |
| Nevadacheapest | 13.1¢ | $3.97 | |
| New Hampshire | 27.0¢ | $8.19 | |
| New Jersey | 24.9¢ | $7.56 | |
| New Mexico | 15.1¢ | $4.56 | |
| New York | 29.5¢ | $8.94 | |
| North Carolina | 14.7¢ | $4.47 | |
| North Dakota | 14.1¢ | $4.28 | |
| Ohio | 19.2¢ | $5.82 | |
| Oklahoma | 14.3¢ | $4.34 | |
| Oregon | 16.3¢ | $4.95 | |
| Pennsylvania | 21.7¢ | $6.59 | |
| Rhode Island | 29.2¢ | $8.86 | |
| South Carolina | 15.6¢ | $4.71 | |
| South Dakota | 15.4¢ | $4.66 | |
| Tennessee | 14.1¢ | $4.26 | |
| Texas | 15.9¢ | $4.83 | |
| Utah | 13.4¢ | $4.05 | |
| Vermont | 24.4¢ | $7.41 | |
| Virginia | 17.2¢ | $5.22 | |
| Washington | 14.9¢ | $4.52 | |
| West Virginia | 15.4¢ | $4.68 | |
| Wisconsin | 19.6¢ | $5.93 | |
| Wyoming | 15.2¢ | $4.62 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| ASUS VA24Dmost efficient | 30 | $5.56 |
| ASUS VP229most efficient | 30 | $5.55 |
| Acer V227Qmost efficient | 30 | $5.58 |
| Acer B277U_vmost efficient | 30 | $5.58 |
| LG 24BA450most efficient | 31 | $5.59 |
| ASUS VY249HG3most efficient | 31 | $5.60 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.46
- Per year
- $5.50
30 kWh/yr × 18.3¢/kWh = $5.50/yr
Prefilled with this model's certified 30 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh (TEC) assumes the monitor is on 35% of the day and asleep the other 65%, per the ENERGY STAR test basis.
Questions, answered with the data
- How much electricity does the AOC 20E1 use?
- ENERGY STAR certifies the AOC 20E1 at 30 kWh per year. The certified annual kWh (TEC) assumes the monitor is on 35% of the day and asleep the other 65%, per the ENERGY STAR test basis.
- How much does the AOC 20E1 cost to run per month?
- About $0.46 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $5.56 a year. Your state's rate moves this up or down; see the table above.
- Is the AOC 20E1 energy efficient?
- It uses 33% less electricity than the median certified computer monitor, placing it in the top 10% of certified models.
- What does the AOC 20E1 cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $3.97 a year in Nevada (13.1¢/kWh) and $16 in Hawaii (52.7¢/kWh).