Lowest Operating Cost: Dishwashers

Ranked by estimate. Operating cost is an estimate, computed from each model's measured annual energy use at the EIA U.S. national-average residential electricity rate (18.56 ¢/kWh, March 2026). Your actual cost depends on your local utility rate and how you use the appliance.

The Loch L1126 ranks as the lowest-operating-cost dishwasher in the dataset, with an estimated annual operating cost of $14.85 based on measured energy consumption of 80 kWh per year. The ranking is derived from certified models sorted by operating cost, calculated using their measured energy use and the national-average electricity rate. No payment or consideration influences the placement of models on this list.

Operating cost represents only one dimension of dishwasher selection. Capacity, features, reliability, and purchase price all factor into the overall value and suitability of a unit for a given household. This energy-efficiency ranking should be treated as one lens through which to evaluate potential purchases, rather than as comprehensive buying guidance. Consumers should weigh the estimated annual operating cost against specifications, features, reliability data, and upfront pricing to determine which model best fits their needs and budget.

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