Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
BenQ GW2490-L
At the standardized usage ENERGY STAR assumes, the BenQ GW2490-L consumes 46 kWh a year — about $8.38 at the U.S. average electricity rate ($0.70 a month). Efficiency-wise it's unremarkable in a good way: within 2% of the median certified computer monitor (rank 801 of 1530). Where you live moves the bill from $5.99 a year in Nevada to $24 in Hawaii.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$8.38/yr
- Per month
- $0.70
- Per day
- 2¢
- Certified use
- 46 kWh/yr
- Screen size
- 23.8 in
- Panel
- TFT LCD
- On-mode power
- 14.52 W
- Sleep-mode power
- 0.21 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $7.49 | |
| Alaska | 28.2¢ | $13 | |
| Arizona | 15.2¢ | $6.94 | |
| Arkansas | 14.1¢ | $6.45 | |
| California | 34.7¢ | $16 | |
| Colorado | 17.1¢ | $7.83 | |
| Connecticut | 24.3¢ | $11 | |
| Delaware | 19.3¢ | $8.82 | |
| District of Columbia | 24.4¢ | $11 | |
| Florida | 15.1¢ | $6.90 | |
| Georgia | 16.4¢ | $7.48 | |
| Hawaiipriciest | 52.7¢ | $24 | |
| Idaho | 14.4¢ | $6.57 | |
| Illinois | 19.9¢ | $9.09 | |
| Indiana | 17.5¢ | $8.00 | |
| Iowa | 15.9¢ | $7.28 | |
| Kansas | 15.7¢ | $7.18 | |
| Kentucky | 14.3¢ | $6.52 | |
| Louisiana | 13.5¢ | $6.16 | |
| Maine | 29.6¢ | $14 | |
| Maryland | 21.8¢ | $9.98 | |
| Massachusetts | 29.6¢ | $14 | |
| Michigan | 23.0¢ | $11 | |
| Minnesota | 17.5¢ | $8.01 | |
| Mississippi | 14.9¢ | $6.80 | |
| Missouri | 16.2¢ | $7.41 | |
| Montana | 15.1¢ | $6.92 | |
| Nebraska | 13.3¢ | $6.06 | |
| Nevadacheapest | 13.1¢ | $5.99 | |
| New Hampshire | 27.0¢ | $12 | |
| New Jersey | 24.9¢ | $11 | |
| New Mexico | 15.1¢ | $6.88 | |
| New York | 29.5¢ | $13 | |
| North Carolina | 14.7¢ | $6.74 | |
| North Dakota | 14.1¢ | $6.45 | |
| Ohio | 19.2¢ | $8.77 | |
| Oklahoma | 14.3¢ | $6.55 | |
| Oregon | 16.3¢ | $7.46 | |
| Pennsylvania | 21.7¢ | $9.93 | |
| Rhode Island | 29.2¢ | $13 | |
| South Carolina | 15.6¢ | $7.11 | |
| South Dakota | 15.4¢ | $7.02 | |
| Tennessee | 14.1¢ | $6.43 | |
| Texas | 15.9¢ | $7.28 | |
| Utah | 13.4¢ | $6.11 | |
| Vermont | 24.4¢ | $11 | |
| Virginia | 17.2¢ | $7.87 | |
| Washington | 14.9¢ | $6.81 | |
| West Virginia | 15.4¢ | $7.06 | |
| Wisconsin | 19.6¢ | $8.94 | |
| Wyoming | 15.2¢ | $6.96 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| HP V24v G5 | 46 | $8.38 |
| PHILIPS 242B1 | 46 | $8.38 |
| PHILIPS 24B2U3301,24B2U33 | 46 | $8.38 |
| ASUS VU279 | 46 | $8.38 |
| HP E24u G5 | 46 | $8.38 |
| PHILIPS 27B2N2100F | 46 | $8.37 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.70
- Per year
- $8.44
46 kWh/yr × 18.3¢/kWh = $8.44/yr
Prefilled with this model's certified 46 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 GW2490-L use?
- ENERGY STAR certifies the BenQ GW2490-L at 46 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 GW2490-L cost to run per month?
- About $0.70 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $8.38 a year. Your state's rate moves this up or down; see the table above.
- Is the BenQ GW2490-L energy efficient?
- It uses 2% more electricity than the median certified computer monitor.
- What does the BenQ GW2490-L cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $5.99 a year in Nevada (13.1¢/kWh) and $24 in Hawaii (52.7¢/kWh).