Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
AOpen 27SA2_a
The AOpen 27SA2_a's certified consumption is 45 kWh per year, which prices out to about $8.20 at the national average rate — your hours of use scale that directly. Efficiency-wise it's unremarkable in a good way: within 1% of the median certified computer monitor (rank 754 of 1530). Where you live moves the bill from $5.86 a year in Nevada to $24 in Hawaii.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$8.20/yr
- Per month
- $0.68
- Per day
- 2¢
- Certified use
- 45 kWh/yr
- Screen size
- 27 in
- Panel
- IPS LCD
- On-mode power
- 14.3 W
- Sleep-mode power
- 0.15 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $7.33 | |
| Alaska | 28.2¢ | $13 | |
| Arizona | 15.2¢ | $6.79 | |
| Arkansas | 14.1¢ | $6.31 | |
| California | 34.7¢ | $16 | |
| Colorado | 17.1¢ | $7.66 | |
| Connecticut | 24.3¢ | $11 | |
| Delaware | 19.3¢ | $8.63 | |
| District of Columbia | 24.4¢ | $11 | |
| Florida | 15.1¢ | $6.75 | |
| Georgia | 16.4¢ | $7.32 | |
| Hawaiipriciest | 52.7¢ | $24 | |
| Idaho | 14.4¢ | $6.43 | |
| Illinois | 19.9¢ | $8.89 | |
| Indiana | 17.5¢ | $7.83 | |
| Iowa | 15.9¢ | $7.12 | |
| Kansas | 15.7¢ | $7.03 | |
| Kentucky | 14.3¢ | $6.38 | |
| Louisiana | 13.5¢ | $6.03 | |
| Maine | 29.6¢ | $13 | |
| Maryland | 21.8¢ | $9.77 | |
| Massachusetts | 29.6¢ | $13 | |
| Michigan | 23.0¢ | $10 | |
| Minnesota | 17.5¢ | $7.83 | |
| Mississippi | 14.9¢ | $6.65 | |
| Missouri | 16.2¢ | $7.25 | |
| Montana | 15.1¢ | $6.77 | |
| Nebraska | 13.3¢ | $5.93 | |
| Nevadacheapest | 13.1¢ | $5.86 | |
| New Hampshire | 27.0¢ | $12 | |
| New Jersey | 24.9¢ | $11 | |
| New Mexico | 15.1¢ | $6.73 | |
| New York | 29.5¢ | $13 | |
| North Carolina | 14.7¢ | $6.59 | |
| North Dakota | 14.1¢ | $6.31 | |
| Ohio | 19.2¢ | $8.58 | |
| Oklahoma | 14.3¢ | $6.41 | |
| Oregon | 16.3¢ | $7.30 | |
| Pennsylvania | 21.7¢ | $9.72 | |
| Rhode Island | 29.2¢ | $13 | |
| South Carolina | 15.6¢ | $6.95 | |
| South Dakota | 15.4¢ | $6.87 | |
| Tennessee | 14.1¢ | $6.29 | |
| Texas | 15.9¢ | $7.13 | |
| Utah | 13.4¢ | $5.98 | |
| Vermont | 24.4¢ | $11 | |
| Virginia | 17.2¢ | $7.70 | |
| Washington | 14.9¢ | $6.67 | |
| West Virginia | 15.4¢ | $6.91 | |
| Wisconsin | 19.6¢ | $8.75 | |
| Wyoming | 15.2¢ | $6.82 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| Acer SA272_a | 45 | $8.20 |
| PHILIPS 24B2G5301 | 45 | $8.20 |
| PHILIPS 241V8 | 45 | $8.21 |
| MSI PRO MP271A E2 | 45 | $8.21 |
| SiComputer Scena NH24* (*=A-Z, a-z or 0-9) | 45 | $8.21 |
| DELL SE2425Hf | 45 | $8.19 |
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 AOpen 27SA2_a use?
- ENERGY STAR certifies the AOpen 27SA2_a 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 AOpen 27SA2_a cost to run per month?
- About $0.68 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $8.20 a year. Your state's rate moves this up or down; see the table above.
- Is the AOpen 27SA2_a energy efficient?
- It uses 1% less electricity than the median certified computer monitor.
- What does the AOpen 27SA2_a cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $5.86 a year in Nevada (13.1¢/kWh) and $24 in Hawaii (52.7¢/kWh).