Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
BenQ GW2280-B
At the standardized usage ENERGY STAR assumes, the BenQ GW2280-B consumes 32 kWh a year — about $5.80 at the U.S. average electricity rate ($0.48 a month). That puts it in the most efficient tenth of every certified computer monitor — 30% less electricity than the median, ranked 143 of 1530. The same unit costs $4.14 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
$5.80/yr
- Per month
- $0.48
- Per day
- 2¢
- Certified use
- 32 kWh/yr
- Screen size
- 21.5 in
- Panel
- IPS LCD
- On-mode power
- 10.1 W
- Sleep-mode power
- 0.1 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $5.18 | |
| Alaska | 28.2¢ | $8.91 | |
| Arizona | 15.2¢ | $4.80 | |
| Arkansas | 14.1¢ | $4.46 | |
| California | 34.7¢ | $11 | |
| Colorado | 17.1¢ | $5.41 | |
| Connecticut | 24.3¢ | $7.69 | |
| Delaware | 19.3¢ | $6.10 | |
| District of Columbia | 24.4¢ | $7.71 | |
| Florida | 15.1¢ | $4.77 | |
| Georgia | 16.4¢ | $5.17 | |
| Hawaiipriciest | 52.7¢ | $17 | |
| Idaho | 14.4¢ | $4.54 | |
| Illinois | 19.9¢ | $6.29 | |
| Indiana | 17.5¢ | $5.53 | |
| Iowa | 15.9¢ | $5.03 | |
| Kansas | 15.7¢ | $4.96 | |
| Kentucky | 14.3¢ | $4.51 | |
| Louisiana | 13.5¢ | $4.26 | |
| Maine | 29.6¢ | $9.35 | |
| Maryland | 21.8¢ | $6.90 | |
| Massachusetts | 29.6¢ | $9.36 | |
| Michigan | 23.0¢ | $7.26 | |
| Minnesota | 17.5¢ | $5.54 | |
| Mississippi | 14.9¢ | $4.70 | |
| Missouri | 16.2¢ | $5.13 | |
| Montana | 15.1¢ | $4.78 | |
| Nebraska | 13.3¢ | $4.19 | |
| Nevadacheapest | 13.1¢ | $4.14 | |
| New Hampshire | 27.0¢ | $8.54 | |
| New Jersey | 24.9¢ | $7.88 | |
| New Mexico | 15.1¢ | $4.76 | |
| New York | 29.5¢ | $9.32 | |
| North Carolina | 14.7¢ | $4.66 | |
| North Dakota | 14.1¢ | $4.46 | |
| Ohio | 19.2¢ | $6.06 | |
| Oklahoma | 14.3¢ | $4.53 | |
| Oregon | 16.3¢ | $5.16 | |
| Pennsylvania | 21.7¢ | $6.87 | |
| Rhode Island | 29.2¢ | $9.24 | |
| South Carolina | 15.6¢ | $4.91 | |
| South Dakota | 15.4¢ | $4.85 | |
| Tennessee | 14.1¢ | $4.45 | |
| Texas | 15.9¢ | $5.04 | |
| Utah | 13.4¢ | $4.22 | |
| Vermont | 24.4¢ | $7.72 | |
| Virginia | 17.2¢ | $5.44 | |
| Washington | 14.9¢ | $4.71 | |
| West Virginia | 15.4¢ | $4.88 | |
| Wisconsin | 19.6¢ | $6.18 | |
| Wyoming | 15.2¢ | $4.82 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| BenQ GW2480-B | 32 | $5.80 |
| ViewSonic VS19279 | 32 | $5.80 |
| Acer V247Wmost efficient | 32 | $5.78 |
| EIZO FlexScan EV2490 | 32 | $5.81 |
| MSI Modern MD2412P | 32 | $5.81 |
| ASUS VA279HG3most efficient | 32 | $5.78 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.49
- Per year
- $5.87
32 kWh/yr × 18.3¢/kWh = $5.87/yr
Prefilled with this model's certified 32 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 BenQ GW2280-B use?
- ENERGY STAR certifies the BenQ GW2280-B at 32 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 BenQ GW2280-B cost to run per month?
- About $0.48 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $5.80 a year. Your state's rate moves this up or down; see the table above.
- Is the BenQ GW2280-B 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 BenQ GW2280-B cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $4.14 a year in Nevada (13.1¢/kWh) and $17 in Hawaii (52.7¢/kWh).