Data through April 2026
Running cost · Refrigerators · ENERGY STAR certified
LG LT18S2100
The LG LT18S2100 never switches off, and its certified 344 kWh a year works out to about $65 on a U.S.-average electric bill — roughly $5.40 a month for an average continuous draw of 39 watts. That's close to the middle of the certified pack — about 5% under the median top-freezer refrigerator, ranked 242 of 674. Where you live moves the bill from $42 a year in North Dakota to $160 in Hawaii. 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 18.8¢/kWh
$65/yr
- Per month
- $5.40
- Per day
- 18¢
- 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 | 17.4¢ | $60 | |
| Alaska | 27.4¢ | $94 | |
| Arizona | 15.5¢ | $53 | |
| Arkansas | 14.2¢ | $49 | |
| California | 35.3¢ | $121 | |
| Colorado | 16.5¢ | $57 | |
| Connecticut | 32.2¢ | $111 | |
| Delaware | 18.8¢ | $65 | |
| District of Columbia | 25.4¢ | $87 | |
| Florida | 15.4¢ | $53 | |
| Georgia | 15.4¢ | $53 | |
| Hawaiipriciest | 46.6¢ | $160 | |
| Idaho | 12.7¢ | $44 | |
| Illinois | 20.5¢ | $70 | |
| Indiana | 17.9¢ | $62 | |
| Iowa | 13.9¢ | $48 | |
| Kansas | 15.8¢ | $54 | |
| Kentucky | 15.0¢ | $52 | |
| Louisiana | 14.4¢ | $50 | |
| Maine | 28.4¢ | $98 | |
| Maryland | 22.1¢ | $76 | |
| Massachusetts | 29.4¢ | $101 | |
| Michigan | 21.4¢ | $74 | |
| Minnesota | 16.4¢ | $56 | |
| Mississippi | 16.8¢ | $58 | |
| Missouri | 14.0¢ | $48 | |
| Montana | 13.9¢ | $48 | |
| Nebraska | 13.3¢ | $46 | |
| Nevada | 14.3¢ | $49 | |
| New Hampshire | 27.2¢ | $94 | |
| New Jersey | 23.5¢ | $81 | |
| New Mexico | 15.2¢ | $52 | |
| New York | 29.4¢ | $101 | |
| North Carolina | 16.3¢ | $56 | |
| North Dakotacheapest | 12.3¢ | $42 | |
| Ohio | 19.5¢ | $67 | |
| Oklahoma | 13.3¢ | $46 | |
| Oregon | 15.8¢ | $54 | |
| Pennsylvania | 21.5¢ | $74 | |
| Rhode Island | 28.3¢ | $97 | |
| South Carolina | 17.1¢ | $59 | |
| South Dakota | 14.5¢ | $50 | |
| Tennessee | 14.9¢ | $51 | |
| Texas | 17.0¢ | $58 | |
| Utah | 13.3¢ | $46 | |
| Vermont | 24.6¢ | $84 | |
| Virginia | 17.4¢ | $60 | |
| Washington | 14.4¢ | $49 | |
| West Virginia | 16.1¢ | $55 | |
| Wisconsin | 19.2¢ | $66 | |
| Wyoming | 14.7¢ | $50 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| LG LT18S1100most efficient | 344 | $65 |
| GE GTE16DTNmost efficient | 345 | $65 |
| GE GTE16GTNmost efficient | 345 | $65 |
| Hotpoint HPE16BTNmost efficient | 345 | $65 |
| Samsung RT16A6195most efficient | 345 | $65 |
| Samsung RT18DG6500most efficient | 343 | $65 |
Run your own numbers
Your rate, your numbers
- Per day
- 18¢
- Per month
- $5.40
- Per year
- $65
344 kWh/yr × 18.8¢/kWh = $65/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
LT18S2100* · LT18S2100*
Questions, answered with the data
- How much electricity does the LG LT18S2100 use?
- ENERGY STAR certifies the LG LT18S2100 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 LT18S2100 cost to run per month?
- About $5.40 a month at the U.S. average residential rate (18.8¢/kWh) — 18¢ a day, or $65 a year. Your state's rate moves this up or down; see the table above.
- Is the LG LT18S2100 energy efficient?
- It uses 5% less electricity than the median certified top-freezer refrigerator. It also meets ENERGY STAR's Most Efficient criteria.
- What does the LG LT18S2100 cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $42 a year in North Dakota (12.3¢/kWh) and $160 in Hawaii (46.6¢/kWh).
- How many watts does the LG LT18S2100 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.