Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
BenQ GL2780-B
At the standardized usage ENERGY STAR assumes, the BenQ GL2780-B consumes 43 kWh a year — about $7.89 at the U.S. average electricity rate ($0.66 a month). That's close to the middle of the certified pack — about 4% under the median computer monitor, ranked 676 of 1530. Where you live moves the bill from $5.64 a year in Nevada to $23 in Hawaii.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$7.89/yr
- Per month
- $0.66
- Per day
- 2¢
- Certified use
- 43 kWh/yr
- Screen size
- 27 in
- Panel
- TN LCD
- On-mode power
- 13.8 W
- Sleep-mode power
- 0.1 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $7.05 | |
| Alaska | 28.2¢ | $12 | |
| Arizona | 15.2¢ | $6.53 | |
| Arkansas | 14.1¢ | $6.07 | |
| California | 34.7¢ | $15 | |
| Colorado | 17.1¢ | $7.37 | |
| Connecticut | 24.3¢ | $10 | |
| Delaware | 19.3¢ | $8.29 | |
| District of Columbia | 24.4¢ | $10 | |
| Florida | 15.1¢ | $6.49 | |
| Georgia | 16.4¢ | $7.03 | |
| Hawaiipriciest | 52.7¢ | $23 | |
| Idaho | 14.4¢ | $6.18 | |
| Illinois | 19.9¢ | $8.55 | |
| Indiana | 17.5¢ | $7.53 | |
| Iowa | 15.9¢ | $6.85 | |
| Kansas | 15.7¢ | $6.76 | |
| Kentucky | 14.3¢ | $6.13 | |
| Louisiana | 13.5¢ | $5.80 | |
| Maine | 29.6¢ | $13 | |
| Maryland | 21.8¢ | $9.39 | |
| Massachusetts | 29.6¢ | $13 | |
| Michigan | 23.0¢ | $9.89 | |
| Minnesota | 17.5¢ | $7.53 | |
| Mississippi | 14.9¢ | $6.40 | |
| Missouri | 16.2¢ | $6.97 | |
| Montana | 15.1¢ | $6.51 | |
| Nebraska | 13.3¢ | $5.70 | |
| Nevadacheapest | 13.1¢ | $5.64 | |
| New Hampshire | 27.0¢ | $12 | |
| New Jersey | 24.9¢ | $11 | |
| New Mexico | 15.1¢ | $6.48 | |
| New York | 29.5¢ | $13 | |
| North Carolina | 14.7¢ | $6.34 | |
| North Dakota | 14.1¢ | $6.07 | |
| Ohio | 19.2¢ | $8.25 | |
| Oklahoma | 14.3¢ | $6.16 | |
| Oregon | 16.3¢ | $7.02 | |
| Pennsylvania | 21.7¢ | $9.34 | |
| Rhode Island | 29.2¢ | $13 | |
| South Carolina | 15.6¢ | $6.69 | |
| South Dakota | 15.4¢ | $6.60 | |
| Tennessee | 14.1¢ | $6.05 | |
| Texas | 15.9¢ | $6.85 | |
| Utah | 13.4¢ | $5.75 | |
| Vermont | 24.4¢ | $11 | |
| Virginia | 17.2¢ | $7.40 | |
| Washington | 14.9¢ | $6.41 | |
| West Virginia | 15.4¢ | $6.64 | |
| Wisconsin | 19.6¢ | $8.41 | |
| Wyoming | 15.2¢ | $6.55 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| AOC 24V2 | 43 | $7.89 |
| DELL P2426HEt | 43 | $7.89 |
| Samsung S27D400GAN | 43 | $7.89 |
| LG 27BL450Y | 43 | $7.88 |
| PHILIPS 24E1N1200A | 43 | $7.88 |
| Lenovo D26TIO24T | 43 | $7.88 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.66
- Per year
- $7.89
43 kWh/yr × 18.3¢/kWh = $7.89/yr
Prefilled with this model's certified 43 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 GL2780-B use?
- ENERGY STAR certifies the BenQ GL2780-B at 43 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 GL2780-B cost to run per month?
- About $0.66 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $7.89 a year. Your state's rate moves this up or down; see the table above.
- Is the BenQ GL2780-B energy efficient?
- It uses 4% less electricity than the median certified computer monitor.
- What does the BenQ GL2780-B cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $5.64 a year in Nevada (13.1¢/kWh) and $23 in Hawaii (52.7¢/kWh).