Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
LG 20U401A
The LG 20U401A's certified consumption is 31 kWh per year, which prices out to about $5.76 at the national average rate — your hours of use scale that directly. Only a handful of certified computer monitors do better: it ranks 140 of 1530 and undercuts the median by 30%. The same unit costs $4.12 a year in Nevada but $17 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$5.76/yr
- Per month
- $0.48
- Per day
- 2¢
- Certified use
- 31 kWh/yr
- Screen size
- 19 in
- Panel
- IPS LCD
- On-mode power
- 9.96 W
- Sleep-mode power
- 0.15 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $5.15 | |
| Alaska | 28.2¢ | $8.86 | |
| Arizona | 15.2¢ | $4.77 | |
| Arkansas | 14.1¢ | $4.43 | |
| California | 34.7¢ | $11 | |
| Colorado | 17.1¢ | $5.38 | |
| Connecticut | 24.3¢ | $7.63 | |
| Delaware | 19.3¢ | $6.06 | |
| District of Columbia | 24.4¢ | $7.66 | |
| Florida | 15.1¢ | $4.74 | |
| Georgia | 16.4¢ | $5.14 | |
| Hawaiipriciest | 52.7¢ | $17 | |
| Idaho | 14.4¢ | $4.51 | |
| Illinois | 19.9¢ | $6.24 | |
| Indiana | 17.5¢ | $5.50 | |
| Iowa | 15.9¢ | $5.00 | |
| Kansas | 15.7¢ | $4.93 | |
| Kentucky | 14.3¢ | $4.48 | |
| Louisiana | 13.5¢ | $4.23 | |
| Maine | 29.6¢ | $9.29 | |
| Maryland | 21.8¢ | $6.86 | |
| Massachusetts | 29.6¢ | $9.29 | |
| Michigan | 23.0¢ | $7.22 | |
| Minnesota | 17.5¢ | $5.50 | |
| Mississippi | 14.9¢ | $4.67 | |
| Missouri | 16.2¢ | $5.09 | |
| Montana | 15.1¢ | $4.75 | |
| Nebraska | 13.3¢ | $4.16 | |
| Nevadacheapest | 13.1¢ | $4.12 | |
| New Hampshire | 27.0¢ | $8.48 | |
| New Jersey | 24.9¢ | $7.83 | |
| New Mexico | 15.1¢ | $4.73 | |
| New York | 29.5¢ | $9.26 | |
| North Carolina | 14.7¢ | $4.63 | |
| North Dakota | 14.1¢ | $4.43 | |
| Ohio | 19.2¢ | $6.02 | |
| Oklahoma | 14.3¢ | $4.50 | |
| Oregon | 16.3¢ | $5.12 | |
| Pennsylvania | 21.7¢ | $6.82 | |
| Rhode Island | 29.2¢ | $9.18 | |
| South Carolina | 15.6¢ | $4.88 | |
| South Dakota | 15.4¢ | $4.82 | |
| Tennessee | 14.1¢ | $4.42 | |
| Texas | 15.9¢ | $5.00 | |
| Utah | 13.4¢ | $4.20 | |
| Vermont | 24.4¢ | $7.67 | |
| Virginia | 17.2¢ | $5.41 | |
| Washington | 14.9¢ | $4.68 | |
| West Virginia | 15.4¢ | $4.85 | |
| Wisconsin | 19.6¢ | $6.14 | |
| Wyoming | 15.2¢ | $4.78 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| Sharp DD-E224FL | 31 | $5.74 |
| ASUS VA279HG3most efficient | 32 | $5.78 |
| LG 20M35PH | 31 | $5.73 |
| Acer V247Wmost efficient | 32 | $5.78 |
| ASUS VU249 | 31 | $5.73 |
| DELL SE2225HMfmost efficient | 31 | $5.73 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.47
- Per year
- $5.69
31 kWh/yr × 18.3¢/kWh = $5.69/yr
Prefilled with this model's certified 31 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 LG 20U401A use?
- ENERGY STAR certifies the LG 20U401A at 31 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 LG 20U401A cost to run per month?
- About $0.48 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $5.76 a year. Your state's rate moves this up or down; see the table above.
- Is the LG 20U401A energy efficient?
- It uses 30% less electricity than the median certified computer monitor, placing it in the top 10% of certified models.
- What does the LG 20U401A cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $4.12 a year in Nevada (13.1¢/kWh) and $17 in Hawaii (52.7¢/kWh).