Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
PHILIPS 243S9
The PHILIPS 243S9's certified consumption is 43 kWh per year, which prices out to about $7.83 at the national average rate — your hours of use scale that directly. Efficiency-wise it's unremarkable in a good way: within 5% of the median certified computer monitor (rank 657 of 1530). Where you live moves the bill from $5.60 a year in Nevada to $23 in Hawaii.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$7.83/yr
- Per month
- $0.65
- Per day
- 2¢
- Certified use
- 43 kWh/yr
- Screen size
- 23.8 in
- Panel
- IPS LCD
- On-mode power
- 13.49 W
- Sleep-mode power
- 0.24 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $7.00 | |
| Alaska | 28.2¢ | $12 | |
| Arizona | 15.2¢ | $6.48 | |
| Arkansas | 14.1¢ | $6.03 | |
| California | 34.7¢ | $15 | |
| Colorado | 17.1¢ | $7.32 | |
| Connecticut | 24.3¢ | $10 | |
| Delaware | 19.3¢ | $8.24 | |
| District of Columbia | 24.4¢ | $10 | |
| Florida | 15.1¢ | $6.45 | |
| Georgia | 16.4¢ | $6.99 | |
| Hawaiipriciest | 52.7¢ | $23 | |
| Idaho | 14.4¢ | $6.14 | |
| Illinois | 19.9¢ | $8.50 | |
| Indiana | 17.5¢ | $7.48 | |
| Iowa | 15.9¢ | $6.80 | |
| Kansas | 15.7¢ | $6.71 | |
| Kentucky | 14.3¢ | $6.09 | |
| Louisiana | 13.5¢ | $5.76 | |
| Maine | 29.6¢ | $13 | |
| Maryland | 21.8¢ | $9.33 | |
| Massachusetts | 29.6¢ | $13 | |
| Michigan | 23.0¢ | $9.82 | |
| Minnesota | 17.5¢ | $7.48 | |
| Mississippi | 14.9¢ | $6.36 | |
| Missouri | 16.2¢ | $6.93 | |
| Montana | 15.1¢ | $6.47 | |
| Nebraska | 13.3¢ | $5.66 | |
| Nevadacheapest | 13.1¢ | $5.60 | |
| New Hampshire | 27.0¢ | $12 | |
| New Jersey | 24.9¢ | $11 | |
| New Mexico | 15.1¢ | $6.43 | |
| New York | 29.5¢ | $13 | |
| North Carolina | 14.7¢ | $6.30 | |
| North Dakota | 14.1¢ | $6.03 | |
| Ohio | 19.2¢ | $8.20 | |
| Oklahoma | 14.3¢ | $6.12 | |
| Oregon | 16.3¢ | $6.97 | |
| Pennsylvania | 21.7¢ | $9.28 | |
| Rhode Island | 29.2¢ | $12 | |
| South Carolina | 15.6¢ | $6.64 | |
| South Dakota | 15.4¢ | $6.56 | |
| Tennessee | 14.1¢ | $6.01 | |
| Texas | 15.9¢ | $6.81 | |
| Utah | 13.4¢ | $5.71 | |
| Vermont | 24.4¢ | $10 | |
| Virginia | 17.2¢ | $7.35 | |
| Washington | 14.9¢ | $6.37 | |
| West Virginia | 15.4¢ | $6.60 | |
| Wisconsin | 19.6¢ | $8.35 | |
| Wyoming | 15.2¢ | $6.51 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| ASUS VZ279HG | 43 | $7.83 |
| Acer EK271U_a | 43 | $7.83 |
| DELL E2426H | 43 | $7.83 |
| DELL P2425HEb | 43 | $7.83 |
| ASUS MB249 | 43 | $7.84 |
| DELL E2425Hf | 43 | $7.84 |
Run your own numbers
Your rate, your numbers
- Per day
- 2¢
- Per month
- $0.66
- Per year
- $7.89
43 kWh/yr × 18.3¢/kWh = $7.89/yr
Prefilled with this model's certified 43 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 PHILIPS 243S9 use?
- ENERGY STAR certifies the PHILIPS 243S9 at 43 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 PHILIPS 243S9 cost to run per month?
- About $0.65 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $7.83 a year. Your state's rate moves this up or down; see the table above.
- Is the PHILIPS 243S9 energy efficient?
- It uses 5% less electricity than the median certified computer monitor.
- What does the PHILIPS 243S9 cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $5.60 a year in Nevada (13.1¢/kWh) and $23 in Hawaii (52.7¢/kWh).