Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
ViewSonic VS20121
The ViewSonic VS20121's certified consumption is 59 kWh per year, which prices out to about $11 at the national average rate — your hours of use scale that directly. That's close to the middle of the certified pack — about 32% above the median computer monitor, ranked 1065 of 1530. The same unit costs $7.79 a year in Nevada but $31 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$11/yr
- Per month
- $0.91
- Per day
- 3¢
- Certified use
- 59 kWh/yr
- Screen size
- 27 in
- Panel
- TFT-LCD
- On-mode power
- 18.89 W
- Sleep-mode power
- 0.26 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $9.74 | |
| Alaska | 28.2¢ | $17 | |
| Arizona | 15.2¢ | $9.02 | |
| Arkansas | 14.1¢ | $8.39 | |
| California | 34.7¢ | $21 | |
| Colorado | 17.1¢ | $10 | |
| Connecticut | 24.3¢ | $14 | |
| Delaware | 19.3¢ | $11 | |
| District of Columbia | 24.4¢ | $14 | |
| Florida | 15.1¢ | $8.97 | |
| Georgia | 16.4¢ | $9.72 | |
| Hawaiipriciest | 52.7¢ | $31 | |
| Idaho | 14.4¢ | $8.54 | |
| Illinois | 19.9¢ | $12 | |
| Indiana | 17.5¢ | $10 | |
| Iowa | 15.9¢ | $9.46 | |
| Kansas | 15.7¢ | $9.33 | |
| Kentucky | 14.3¢ | $8.47 | |
| Louisiana | 13.5¢ | $8.01 | |
| Maine | 29.6¢ | $18 | |
| Maryland | 21.8¢ | $13 | |
| Massachusetts | 29.6¢ | $18 | |
| Michigan | 23.0¢ | $14 | |
| Minnesota | 17.5¢ | $10 | |
| Mississippi | 14.9¢ | $8.84 | |
| Missouri | 16.2¢ | $9.63 | |
| Montana | 15.1¢ | $8.99 | |
| Nebraska | 13.3¢ | $7.87 | |
| Nevadacheapest | 13.1¢ | $7.79 | |
| New Hampshire | 27.0¢ | $16 | |
| New Jersey | 24.9¢ | $15 | |
| New Mexico | 15.1¢ | $8.95 | |
| New York | 29.5¢ | $18 | |
| North Carolina | 14.7¢ | $8.76 | |
| North Dakota | 14.1¢ | $8.39 | |
| Ohio | 19.2¢ | $11 | |
| Oklahoma | 14.3¢ | $8.51 | |
| Oregon | 16.3¢ | $9.69 | |
| Pennsylvania | 21.7¢ | $13 | |
| Rhode Island | 29.2¢ | $17 | |
| South Carolina | 15.6¢ | $9.24 | |
| South Dakota | 15.4¢ | $9.12 | |
| Tennessee | 14.1¢ | $8.36 | |
| Texas | 15.9¢ | $9.47 | |
| Utah | 13.4¢ | $7.94 | |
| Vermont | 24.4¢ | $15 | |
| Virginia | 17.2¢ | $10 | |
| Washington | 14.9¢ | $8.86 | |
| West Virginia | 15.4¢ | $9.18 | |
| Wisconsin | 19.6¢ | $12 | |
| Wyoming | 15.2¢ | $9.05 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| ViewSonic VS17780 | 59 | $11 |
| PHILIPS 275P1 | 59 | $11 |
| PHILIPS 272B7QU | 60 | $11 |
| Samsung S27A600NAN | 60 | $11 |
| Lenovo D26TIO27 | 60 | $11 |
| ViewSonic VS21286 | 60 | $11 |
Run your own numbers
Your rate, your numbers
- Per day
- 3¢
- Per month
- $0.90
- Per year
- $11
59 kWh/yr × 18.3¢/kWh = $11/yr
Prefilled with this model's certified 59 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 ViewSonic VS20121 use?
- ENERGY STAR certifies the ViewSonic VS20121 at 59 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 ViewSonic VS20121 cost to run per month?
- About $0.91 a month at the U.S. average residential rate (18.3¢/kWh) — 3¢ a day, or $11 a year. Your state's rate moves this up or down; see the table above.
- Is the ViewSonic VS20121 energy efficient?
- It uses 32% more electricity than the median certified computer monitor.
- What does the ViewSonic VS20121 cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $7.79 a year in Nevada (13.1¢/kWh) and $31 in Hawaii (52.7¢/kWh).