Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
ASRock CL27FF
The ASRock CL27FF's certified consumption is 45 kWh per year, which prices out to about $8.17 at the national average rate — your hours of use scale that directly. That's close to the middle of the certified pack — about 1% under the median computer monitor, ranked 744 of 1530. The same unit costs $5.84 a year in Nevada but $23 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$8.17/yr
- Per month
- $0.68
- Per day
- 2¢
- Certified use
- 45 kWh/yr
- Screen size
- 27 in
- Panel
- IPS LCD
- On-mode power
- 14.25 W
- Sleep-mode power
- 0.15 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $7.31 | |
| Alaska | 28.2¢ | $13 | |
| Arizona | 15.2¢ | $6.76 | |
| Arkansas | 14.1¢ | $6.29 | |
| California | 34.7¢ | $15 | |
| Colorado | 17.1¢ | $7.63 | |
| Connecticut | 24.3¢ | $11 | |
| Delaware | 19.3¢ | $8.60 | |
| District of Columbia | 24.4¢ | $11 | |
| Florida | 15.1¢ | $6.73 | |
| Georgia | 16.4¢ | $7.29 | |
| Hawaiipriciest | 52.7¢ | $23 | |
| Idaho | 14.4¢ | $6.40 | |
| Illinois | 19.9¢ | $8.86 | |
| Indiana | 17.5¢ | $7.80 | |
| Iowa | 15.9¢ | $7.10 | |
| Kansas | 15.7¢ | $7.00 | |
| Kentucky | 14.3¢ | $6.35 | |
| Louisiana | 13.5¢ | $6.01 | |
| Maine | 29.6¢ | $13 | |
| Maryland | 21.8¢ | $9.73 | |
| Massachusetts | 29.6¢ | $13 | |
| Michigan | 23.0¢ | $10 | |
| Minnesota | 17.5¢ | $7.81 | |
| Mississippi | 14.9¢ | $6.63 | |
| Missouri | 16.2¢ | $7.23 | |
| Montana | 15.1¢ | $6.75 | |
| Nebraska | 13.3¢ | $5.90 | |
| Nevadacheapest | 13.1¢ | $5.84 | |
| New Hampshire | 27.0¢ | $12 | |
| New Jersey | 24.9¢ | $11 | |
| New Mexico | 15.1¢ | $6.71 | |
| New York | 29.5¢ | $13 | |
| North Carolina | 14.7¢ | $6.57 | |
| North Dakota | 14.1¢ | $6.29 | |
| Ohio | 19.2¢ | $8.55 | |
| Oklahoma | 14.3¢ | $6.39 | |
| Oregon | 16.3¢ | $7.27 | |
| Pennsylvania | 21.7¢ | $9.68 | |
| Rhode Island | 29.2¢ | $13 | |
| South Carolina | 15.6¢ | $6.93 | |
| South Dakota | 15.4¢ | $6.84 | |
| Tennessee | 14.1¢ | $6.27 | |
| Texas | 15.9¢ | $7.10 | |
| Utah | 13.4¢ | $5.96 | |
| Vermont | 24.4¢ | $11 | |
| Virginia | 17.2¢ | $7.67 | |
| Washington | 14.9¢ | $6.64 | |
| West Virginia | 15.4¢ | $6.88 | |
| Wisconsin | 19.6¢ | $8.72 | |
| Wyoming | 15.2¢ | $6.79 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| HKC MB27N3F | 45 | $8.17 |
| HP P24v G5 | 45 | $8.18 |
| LG 27BA45QB | 45 | $8.18 |
| ASUS PA24ACRV | 45 | $8.18 |
| AOC 27P1 | 45 | $8.18 |
| XITRIX XPN-WFP2415-100 | 45 | $8.16 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.69
- Per year
- $8.25
45 kWh/yr × 18.3¢/kWh = $8.25/yr
Prefilled with this model's certified 45 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 ASRock CL27FF use?
- ENERGY STAR certifies the ASRock CL27FF at 45 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 ASRock CL27FF cost to run per month?
- About $0.68 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $8.17 a year. Your state's rate moves this up or down; see the table above.
- Is the ASRock CL27FF energy efficient?
- It uses 1% less electricity than the median certified computer monitor.
- What does the ASRock CL27FF cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $5.84 a year in Nevada (13.1¢/kWh) and $23 in Hawaii (52.7¢/kWh).