Running cost for the LG WT7800C*
The LG WT7800C* is certified by ENERGY STAR at 130 kWh a year, about average for its category to run among washing machines currently certified.
That $24 is priced at 18.8¢/kWh, the average of all 51 state rates this site tracks. Your own state's rate is one click away.
Efficient, or not, for a washing machine
The category average is 123 kWh/yr; this model runs 5.7% above it, ranking 271 of 398 washing machines tracked here for running cost. That average is drawn from all 398 washing machines ENERGY STAR currently certifies, not an outside number, a $1/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the LG WT7800C*: LG WT7600H*A ($24/yr, 130 kWh/yr), then LG WT7850H*A ($24/yr, 130 kWh/yr).
Within the LG lineup
Ranked 73 of LG's 93 certified washing machines, this sits between the WM3420C* ($15/yr, the brand's cheapest) and the WT7485C* ($41/yr, its priciest).
What this adds up to over time
10 years is NAHB's typical service life for this category; at $24/year, the LG WT7800C* adds up to about $244 in electricity over that span.
Is it worth replacing?
Efficient as certified washing machines go, $24/year is a reasonable baseline if you're comparing what else is on the market.
See what else is certified in this category before you decide.
If you're keeping it
$24/year to run is the predictable cost of the LG WT7800C*; a protection plan covers the unpredictable one, a repair bill.
Where this number comes from
At rank 271 of 398 for running cost, see the washing machine category page for the rest of the field, or the guide to how much your state matters. The 130 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.