Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
BenQ GW2490-B
The BenQ GW2490-B's certified consumption is 34 kWh per year, which prices out to about $6.23 at the national average rate — your hours of use scale that directly. That's 25% less than the median certified computer monitor, placing it comfortably in the efficient third of the field (211 of 1530). The same unit costs $4.45 a year in Nevada but $18 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$6.23/yr
- Per month
- $0.52
- Per day
- 2¢
- Certified use
- 34 kWh/yr
- Screen size
- 23.8 in
- Panel
- IPS LCD
- On-mode power
- 10.7 W
- Sleep-mode power
- 0.21 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $5.57 | |
| Alaska | 28.2¢ | $9.59 | |
| Arizona | 15.2¢ | $5.16 | |
| Arkansas | 14.1¢ | $4.80 | |
| California | 34.7¢ | $12 | |
| Colorado | 17.1¢ | $5.82 | |
| Connecticut | 24.3¢ | $8.26 | |
| Delaware | 19.3¢ | $6.55 | |
| District of Columbia | 24.4¢ | $8.29 | |
| Florida | 15.1¢ | $5.13 | |
| Georgia | 16.4¢ | $5.56 | |
| Hawaiipriciest | 52.7¢ | $18 | |
| Idaho | 14.4¢ | $4.88 | |
| Illinois | 19.9¢ | $6.76 | |
| Indiana | 17.5¢ | $5.95 | |
| Iowa | 15.9¢ | $5.41 | |
| Kansas | 15.7¢ | $5.34 | |
| Kentucky | 14.3¢ | $4.85 | |
| Louisiana | 13.5¢ | $4.58 | |
| Maine | 29.6¢ | $10 | |
| Maryland | 21.8¢ | $7.42 | |
| Massachusetts | 29.6¢ | $10 | |
| Michigan | 23.0¢ | $7.81 | |
| Minnesota | 17.5¢ | $5.95 | |
| Mississippi | 14.9¢ | $5.06 | |
| Missouri | 16.2¢ | $5.51 | |
| Montana | 15.1¢ | $5.14 | |
| Nebraska | 13.3¢ | $4.50 | |
| Nevadacheapest | 13.1¢ | $4.45 | |
| New Hampshire | 27.0¢ | $9.18 | |
| New Jersey | 24.9¢ | $8.48 | |
| New Mexico | 15.1¢ | $5.12 | |
| New York | 29.5¢ | $10 | |
| North Carolina | 14.7¢ | $5.01 | |
| North Dakota | 14.1¢ | $4.80 | |
| Ohio | 19.2¢ | $6.52 | |
| Oklahoma | 14.3¢ | $4.87 | |
| Oregon | 16.3¢ | $5.55 | |
| Pennsylvania | 21.7¢ | $7.38 | |
| Rhode Island | 29.2¢ | $9.93 | |
| South Carolina | 15.6¢ | $5.28 | |
| South Dakota | 15.4¢ | $5.22 | |
| Tennessee | 14.1¢ | $4.78 | |
| Texas | 15.9¢ | $5.42 | |
| Utah | 13.4¢ | $4.54 | |
| Vermont | 24.4¢ | $8.30 | |
| Virginia | 17.2¢ | $5.85 | |
| Washington | 14.9¢ | $5.07 | |
| West Virginia | 15.4¢ | $5.25 | |
| Wisconsin | 19.6¢ | $6.65 | |
| Wyoming | 15.2¢ | $5.18 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| MSI PRO MP245 E14 | 34 | $6.23 |
| ASUS VZ249HG | 34 | $6.24 |
| DELL E2726HSMtmost efficient | 34 | $6.24 |
| MSI PRO MP242A E2 | 34 | $6.24 |
| ASUS VP229HF | 34 | $6.22 |
| HP HP 524pn | 34 | $6.22 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.52
- Per year
- $6.24
34 kWh/yr × 18.3¢/kWh = $6.24/yr
Prefilled with this model's certified 34 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-B use?
- ENERGY STAR certifies the BenQ GW2490-B at 34 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-B cost to run per month?
- About $0.52 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $6.23 a year. Your state's rate moves this up or down; see the table above.
- Is the BenQ GW2490-B energy efficient?
- It uses 25% less electricity than the median certified computer monitor, placing it in the efficient third of certified models.
- What does the BenQ GW2490-B cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $4.45 a year in Nevada (13.1¢/kWh) and $18 in Hawaii (52.7¢/kWh).