Data through April 2026
Running cost · Computer Monitors · ENERGY STAR certified
BenQ GW2790-B
At the standardized usage ENERGY STAR assumes, the BenQ GW2790-B consumes 47 kWh a year — about $8.76 at the U.S. average electricity rate ($0.73 a month). That's close to the middle of the certified pack — about 3% above the median computer monitor, ranked 804 of 1482. The same unit costs $5.75 a year in North Dakota but $22 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.8¢/kWh
$8.76/yr
- Per month
- $0.73
- Per day
- 2¢
- Certified use
- 47 kWh/yr
- Screen size
- 27 in
- Panel
- IPS LCD
- On-mode power
- 14.8 W
- Sleep-mode power
- 0.2 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 17.4¢ | $8.10 | |
| Alaska | 27.4¢ | $13 | |
| Arizona | 15.5¢ | $7.20 | |
| Arkansas | 14.2¢ | $6.59 | |
| California | 35.3¢ | $16 | |
| Colorado | 16.5¢ | $7.69 | |
| Connecticut | 32.2¢ | $15 | |
| Delaware | 18.8¢ | $8.74 | |
| District of Columbia | 25.4¢ | $12 | |
| Florida | 15.4¢ | $7.15 | |
| Georgia | 15.4¢ | $7.15 | |
| Hawaiipriciest | 46.6¢ | $22 | |
| Idaho | 12.7¢ | $5.91 | |
| Illinois | 20.5¢ | $9.52 | |
| Indiana | 17.9¢ | $8.33 | |
| Iowa | 13.9¢ | $6.45 | |
| Kansas | 15.8¢ | $7.34 | |
| Kentucky | 15.0¢ | $6.99 | |
| Louisiana | 14.4¢ | $6.72 | |
| Maine | 28.4¢ | $13 | |
| Maryland | 22.1¢ | $10 | |
| Massachusetts | 29.4¢ | $14 | |
| Michigan | 21.4¢ | $9.95 | |
| Minnesota | 16.4¢ | $7.62 | |
| Mississippi | 16.8¢ | $7.80 | |
| Missouri | 14.0¢ | $6.52 | |
| Montana | 13.9¢ | $6.47 | |
| Nebraska | 13.3¢ | $6.18 | |
| Nevada | 14.3¢ | $6.65 | |
| New Hampshire | 27.2¢ | $13 | |
| New Jersey | 23.5¢ | $11 | |
| New Mexico | 15.2¢ | $7.05 | |
| New York | 29.4¢ | $14 | |
| North Carolina | 16.3¢ | $7.56 | |
| North Dakotacheapest | 12.3¢ | $5.75 | |
| Ohio | 19.5¢ | $9.07 | |
| Oklahoma | 13.3¢ | $6.19 | |
| Oregon | 15.8¢ | $7.34 | |
| Pennsylvania | 21.5¢ | $9.99 | |
| Rhode Island | 28.3¢ | $13 | |
| South Carolina | 17.1¢ | $7.94 | |
| South Dakota | 14.5¢ | $6.75 | |
| Tennessee | 14.9¢ | $6.95 | |
| Texas | 17.0¢ | $7.90 | |
| Utah | 13.3¢ | $6.18 | |
| Vermont | 24.6¢ | $11 | |
| Virginia | 17.4¢ | $8.09 | |
| Washington | 14.4¢ | $6.68 | |
| West Virginia | 16.1¢ | $7.47 | |
| Wisconsin | 19.2¢ | $8.94 | |
| Wyoming | 14.7¢ | $6.83 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| ViewSonic VS18588 | 47 | $8.76 |
| EIZO FlexScan EV2456 | 46 | $8.75 |
| PHILIPS 252B9 | 46 | $8.74 |
| ASUS BE248CFN | 47 | $8.78 |
| AOC 27E4U | 46 | $8.74 |
| ViewSonic VS19630 | 46 | $8.74 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.74
- Per year
- $8.85
47 kWh/yr × 18.8¢/kWh = $8.85/yr
Prefilled with this model's certified 47 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 GW2790-B use?
- ENERGY STAR certifies the BenQ GW2790-B at 47 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 GW2790-B cost to run per month?
- About $0.73 a month at the U.S. average residential rate (18.8¢/kWh) — 2¢ a day, or $8.76 a year. Your state's rate moves this up or down; see the table above.
- Is the BenQ GW2790-B energy efficient?
- It uses 3% more electricity than the median certified computer monitor.
- What does the BenQ GW2790-B cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $5.75 a year in North Dakota (12.3¢/kWh) and $22 in Hawaii (46.6¢/kWh).