Data through June 2026
Running cost · Refrigerators · ENERGY STAR certified
LG LT18S1100
The LG LT18S1100 never switches off, and its certified 344 kWh a year works out to about $63 on a U.S.-average electric bill — roughly $5.26 a month for an average continuous draw of 39 watts. That's 5% less than the median certified top-freezer refrigerator, placing it comfortably in the efficient third of the field (247 of 713). The same unit costs $45 a year in Nevada but $181 in Hawaii — electricity rates, not the appliance, make the difference. It also meets ENERGY STAR's stricter “Most Efficient” criteria.
Uses 15% less energy than the U.S. federal minimum
Dimensions 65" H × 27.5" W
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$63/yr
- Per month
- $5.26
- Per day
- 17¢
- Certified use
- 344 kWh/yr
- Configuration
- Top Freezer
- Total capacity
- 17.5 cu ft
- Defrost
- Automatic
- Ice maker
- No
- Through-door dispenser
- No
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $56 | |
| Alaska | 28.2¢ | $97 | |
| Arizona | 15.2¢ | $52 | |
| Arkansas | 14.1¢ | $49 | |
| California | 34.7¢ | $120 | |
| Colorado | 17.1¢ | $59 | |
| Connecticut | 24.3¢ | $84 | |
| Delaware | 19.3¢ | $66 | |
| District of Columbia | 24.4¢ | $84 | |
| Florida | 15.1¢ | $52 | |
| Georgia | 16.4¢ | $56 | |
| Hawaiipriciest | 52.7¢ | $181 | |
| Idaho | 14.4¢ | $49 | |
| Illinois | 19.9¢ | $68 | |
| Indiana | 17.5¢ | $60 | |
| Iowa | 15.9¢ | $55 | |
| Kansas | 15.7¢ | $54 | |
| Kentucky | 14.3¢ | $49 | |
| Louisiana | 13.5¢ | $46 | |
| Maine | 29.6¢ | $102 | |
| Maryland | 21.8¢ | $75 | |
| Massachusetts | 29.6¢ | $102 | |
| Michigan | 23.0¢ | $79 | |
| Minnesota | 17.5¢ | $60 | |
| Mississippi | 14.9¢ | $51 | |
| Missouri | 16.2¢ | $56 | |
| Montana | 15.1¢ | $52 | |
| Nebraska | 13.3¢ | $46 | |
| Nevadacheapest | 13.1¢ | $45 | |
| New Hampshire | 27.0¢ | $93 | |
| New Jersey | 24.9¢ | $86 | |
| New Mexico | 15.1¢ | $52 | |
| New York | 29.5¢ | $101 | |
| North Carolina | 14.7¢ | $51 | |
| North Dakota | 14.1¢ | $49 | |
| Ohio | 19.2¢ | $66 | |
| Oklahoma | 14.3¢ | $49 | |
| Oregon | 16.3¢ | $56 | |
| Pennsylvania | 21.7¢ | $75 | |
| Rhode Island | 29.2¢ | $101 | |
| South Carolina | 15.6¢ | $53 | |
| South Dakota | 15.4¢ | $53 | |
| Tennessee | 14.1¢ | $48 | |
| Texas | 15.9¢ | $55 | |
| Utah | 13.4¢ | $46 | |
| Vermont | 24.4¢ | $84 | |
| Virginia | 17.2¢ | $59 | |
| Washington | 14.9¢ | $51 | |
| West Virginia | 15.4¢ | $53 | |
| Wisconsin | 19.6¢ | $67 | |
| Wyoming | 15.2¢ | $52 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| LG LT18S2100most efficient | 344 | $63 |
| GE GTE16DTNmost efficient | 345 | $63 |
| GE GTE16GTNmost efficient | 345 | $63 |
| Hotpoint HPE16BTNmost efficient | 345 | $63 |
| Samsung RT16A6195most efficient | 345 | $63 |
| Samsung RT18DG6500most efficient | 343 | $63 |
Run your own numbers
Your rate, your numbers
- Per day
- 17¢
- Per month
- $5.26
- Per year
- $63
344 kWh/yr × 18.3¢/kWh = $63/yr
Prefilled with this model's certified 344 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the DOE test procedure, which measures continuous 24/7 operation at standardized temperatures — refrigerators never get a day off.
Certified variants covered by this entry
LT18S1100* · LT18S1100*
Questions, answered with the data
- How much electricity does the LG LT18S1100 use?
- ENERGY STAR certifies the LG LT18S1100 at 344 kWh per year. The certified annual kWh comes from the DOE test procedure, which measures continuous 24/7 operation at standardized temperatures — refrigerators never get a day off.
- How much does the LG LT18S1100 cost to run per month?
- About $5.26 a month at the U.S. average residential rate (18.3¢/kWh) — 17¢ a day, or $63 a year. Your state's rate moves this up or down; see the table above.
- Is the LG LT18S1100 energy efficient?
- It uses 5% less electricity than the median certified top-freezer refrigerator, placing it in the efficient third of certified models. It also meets ENERGY STAR's Most Efficient criteria.
- What does the LG LT18S1100 cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $45 a year in Nevada (13.1¢/kWh) and $181 in Hawaii (52.7¢/kWh).
- How many watts does the LG LT18S1100 draw on average?
- Spread over a year of continuous operation, 344 kWh works out to an average draw of about 39 watts — like leaving a 39-watt bulb on 24/7.
- Does this figure cover other model numbers?
- Yes — 2 certified retail variants (color, finish, and store-specific SKUs) share this exact energy certification. They're listed under "Certified variants" on this page.