Data through June 2026
Running cost · Computer Monitors · ENERGY STAR certified
ViewSonic VS18478
The ViewSonic VS18478's certified consumption is 64 kWh per year, which prices out to about $12 at the national average rate — your hours of use scale that directly. That's close to the middle of the certified pack — about 41% above the median computer monitor, ranked 1115 of 1530. Where you live moves the bill from $8.35 a year in Nevada to $34 in Hawaii.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$12/yr
- Per month
- $0.97
- Per day
- 3¢
- Certified use
- 64 kWh/yr
- Screen size
- 31.5 in
- Panel
- VA LCD
- On-mode power
- 20.03 W
- Sleep-mode power
- 0.4 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $10 | |
| Alaska | 28.2¢ | $18 | |
| Arizona | 15.2¢ | $9.67 | |
| Arkansas | 14.1¢ | $8.99 | |
| California | 34.7¢ | $22 | |
| Colorado | 17.1¢ | $11 | |
| Connecticut | 24.3¢ | $15 | |
| Delaware | 19.3¢ | $12 | |
| District of Columbia | 24.4¢ | $16 | |
| Florida | 15.1¢ | $9.62 | |
| Georgia | 16.4¢ | $10 | |
| Hawaiipriciest | 52.7¢ | $34 | |
| Idaho | 14.4¢ | $9.15 | |
| Illinois | 19.9¢ | $13 | |
| Indiana | 17.5¢ | $11 | |
| Iowa | 15.9¢ | $10 | |
| Kansas | 15.7¢ | $10 | |
| Kentucky | 14.3¢ | $9.08 | |
| Louisiana | 13.5¢ | $8.59 | |
| Maine | 29.6¢ | $19 | |
| Maryland | 21.8¢ | $14 | |
| Massachusetts | 29.6¢ | $19 | |
| Michigan | 23.0¢ | $15 | |
| Minnesota | 17.5¢ | $11 | |
| Mississippi | 14.9¢ | $9.48 | |
| Missouri | 16.2¢ | $10 | |
| Montana | 15.1¢ | $9.64 | |
| Nebraska | 13.3¢ | $8.44 | |
| Nevadacheapest | 13.1¢ | $8.35 | |
| New Hampshire | 27.0¢ | $17 | |
| New Jersey | 24.9¢ | $16 | |
| New Mexico | 15.1¢ | $9.59 | |
| New York | 29.5¢ | $19 | |
| North Carolina | 14.7¢ | $9.39 | |
| North Dakota | 14.1¢ | $8.99 | |
| Ohio | 19.2¢ | $12 | |
| Oklahoma | 14.3¢ | $9.13 | |
| Oregon | 16.3¢ | $10 | |
| Pennsylvania | 21.7¢ | $14 | |
| Rhode Island | 29.2¢ | $19 | |
| South Carolina | 15.6¢ | $9.90 | |
| South Dakota | 15.4¢ | $9.78 | |
| Tennessee | 14.1¢ | $8.96 | |
| Texas | 15.9¢ | $10 | |
| Utah | 13.4¢ | $8.52 | |
| Vermont | 24.4¢ | $16 | |
| Virginia | 17.2¢ | $11 | |
| Washington | 14.9¢ | $9.50 | |
| West Virginia | 15.4¢ | $9.84 | |
| Wisconsin | 19.6¢ | $12 | |
| Wyoming | 15.2¢ | $9.71 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| ASUS BE27ACGNK | 64 | $12 |
| ViewSonic VS18302 | 64 | $12 |
| Lenovo C25315UP0most efficient | 64 | $12 |
| LG 34BQ650 | 64 | $12 |
| LG 34WQ650 | 64 | $12 |
| LG 34WQ65X | 64 | $12 |
Run your own numbers
Your rate, your numbers
- Per day
- 3¢
- Per month
- $0.98
- Per year
- $12
64 kWh/yr × 18.3¢/kWh = $12/yr
Prefilled with this model's certified 64 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 ViewSonic VS18478 use?
- ENERGY STAR certifies the ViewSonic VS18478 at 64 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 ViewSonic VS18478 cost to run per month?
- About $0.97 a month at the U.S. average residential rate (18.3¢/kWh) — 3¢ a day, or $12 a year. Your state's rate moves this up or down; see the table above.
- Is the ViewSonic VS18478 energy efficient?
- It uses 41% more electricity than the median certified computer monitor.
- What does the ViewSonic VS18478 cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $8.35 a year in Nevada (13.1¢/kWh) and $34 in Hawaii (52.7¢/kWh).