Thermador T30IR905SP: running cost
At 279 kWh/yr, the Thermador T30IR905SP's ENERGY STAR certification puts it one of the cheaper models in its category to run against every other certified refrigerator.
That $52 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 refrigerator
Against the category average of 386 kWh/yr, this model uses 27.7% less, ranking 1,599 of 4,704 refrigerators tracked here for running cost. That average is drawn from all 4,704 refrigerators ENERGY STAR currently certifies, not an outside number, a $20/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 Thermador T30IR905SP: Miele K 2802 Vi ($52/yr, 279 kWh/yr), then True Manufacturing Company, Inc TUR-24-R-SS-C ($52/yr, 279 kWh/yr).
Within the Thermador lineup
Ranked 18 of Thermador's 54 certified refrigerators, this sits between the T24IR905SP ($48/yr, the brand's cheapest) and the T48IT100NP ($126/yr, its priciest).
Cost over its typical lifespan
NAHB's Study of Life Expectancy of Home Components puts a typical refrigerator's service life at 13 years; run the Thermador T30IR905SP that long and it costs about $682 in electricity, on top of whatever it cost to buy.
Shopping for a new one
Efficient as certified refrigerators go, $52/year is a reasonable baseline if you're comparing what else is on the market.
Compare current ENERGY STAR certified refrigerators before buying.
If you're keeping it
The Thermador T30IR905SP already costs $52/year to run; a repair bill on top of that is the kind of expense a protection plan exists to smooth out.
Where this number comes from
The full Refrigerator category page shows all 4,704 refrigerators ranked by cost; the state-rate guide covers the half of this number that isn't the appliance. The 279 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.