Data through April 2026
Running cost · Computer Monitors · ENERGY STAR certified
Samsung S27A40*### (*=0-9, #=A-Z, blank)
The Samsung S27A40*### (*=0-9, #=A-Z, blank)'s certified consumption is 49 kWh per year, which prices out to about $9.30 at the national average rate — your hours of use scale that directly. Efficiency-wise it's unremarkable in a good way: within 10% of the median certified computer monitor (rank 884 of 1482). Where you live moves the bill from $6.10 a year in North Dakota to $23 in Hawaii.
Estimated annual running cost · U.S. average rate 18.8¢/kWh
$9.30/yr
- Per month
- $0.78
- Per day
- 3¢
- Certified use
- 49 kWh/yr
- Screen size
- 27 in
- Panel
- TN LCD
- On-mode power
- 15.56 W
- Sleep-mode power
- 0.3 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 17.4¢ | $8.60 | |
| Alaska | 27.4¢ | $14 | |
| Arizona | 15.5¢ | $7.65 | |
| Arkansas | 14.2¢ | $7.00 | |
| California | 35.3¢ | $17 | |
| Colorado | 16.5¢ | $8.17 | |
| Connecticut | 32.2¢ | $16 | |
| Delaware | 18.8¢ | $9.28 | |
| District of Columbia | 25.4¢ | $13 | |
| Florida | 15.4¢ | $7.60 | |
| Georgia | 15.4¢ | $7.59 | |
| Hawaiipriciest | 46.6¢ | $23 | |
| Idaho | 12.7¢ | $6.27 | |
| Illinois | 20.5¢ | $10 | |
| Indiana | 17.9¢ | $8.84 | |
| Iowa | 13.9¢ | $6.85 | |
| Kansas | 15.8¢ | $7.80 | |
| Kentucky | 15.0¢ | $7.42 | |
| Louisiana | 14.4¢ | $7.13 | |
| Maine | 28.4¢ | $14 | |
| Maryland | 22.1¢ | $11 | |
| Massachusetts | 29.4¢ | $15 | |
| Michigan | 21.4¢ | $11 | |
| Minnesota | 16.4¢ | $8.10 | |
| Mississippi | 16.8¢ | $8.28 | |
| Missouri | 14.0¢ | $6.92 | |
| Montana | 13.9¢ | $6.87 | |
| Nebraska | 13.3¢ | $6.56 | |
| Nevada | 14.3¢ | $7.06 | |
| New Hampshire | 27.2¢ | $13 | |
| New Jersey | 23.5¢ | $12 | |
| New Mexico | 15.2¢ | $7.48 | |
| New York | 29.4¢ | $15 | |
| North Carolina | 16.3¢ | $8.03 | |
| North Dakotacheapest | 12.3¢ | $6.10 | |
| Ohio | 19.5¢ | $9.63 | |
| Oklahoma | 13.3¢ | $6.58 | |
| Oregon | 15.8¢ | $7.80 | |
| Pennsylvania | 21.5¢ | $11 | |
| Rhode Island | 28.3¢ | $14 | |
| South Carolina | 17.1¢ | $8.43 | |
| South Dakota | 14.5¢ | $7.17 | |
| Tennessee | 14.9¢ | $7.38 | |
| Texas | 17.0¢ | $8.39 | |
| Utah | 13.3¢ | $6.57 | |
| Vermont | 24.6¢ | $12 | |
| Virginia | 17.4¢ | $8.59 | |
| Washington | 14.4¢ | $7.09 | |
| West Virginia | 16.1¢ | $7.93 | |
| Wisconsin | 19.2¢ | $9.49 | |
| Wyoming | 14.7¢ | $7.25 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| BenQ GW2790P-L | 49 | $9.29 |
| PHILIPS 24B2U4301 | 49 | $9.28 |
| DELL P2425Dc | 50 | $9.33 |
| AOC 24E4CV | 50 | $9.34 |
| AOC 27E3 | 50 | $9.34 |
| LG 27BF640B | 50 | $9.35 |
Run your own numbers
Your rate, your numbers
- Per day
- 3¢
- Per month
- $0.77
- Per year
- $9.23
49 kWh/yr × 18.8¢/kWh = $9.23/yr
Prefilled with this model's certified 49 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 Samsung S27A40*### (*=0-9, #=A-Z, blank) use?
- ENERGY STAR certifies the Samsung S27A40*### (*=0-9, #=A-Z, blank) at 49 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 Samsung S27A40*### (*=0-9, #=A-Z, blank) cost to run per month?
- About $0.78 a month at the U.S. average residential rate (18.8¢/kWh) — 3¢ a day, or $9.30 a year. Your state's rate moves this up or down; see the table above.
- Is the Samsung S27A40*### (*=0-9, #=A-Z, blank) energy efficient?
- It uses 10% more electricity than the median certified computer monitor.
- What does the Samsung S27A40*### (*=0-9, #=A-Z, blank) cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $6.10 a year in North Dakota (12.3¢/kWh) and $23 in Hawaii (46.6¢/kWh).