GE GE40S10BAM01

The registry lists GE GE40S10BAM01 with a UEF, the ratio of hot water delivered to energy used, of 0.92. This site computed the annual figure of 3,531 kWh from that UEF and the DOE test's daily hot-water draw for the medium draw pattern, which describes a typical household on a busy morning. The registry itself does not publish an annual energy figure. The unit ranks 213th lowest in energy use of 426 electric tank models at this pattern. Its difference from the class median of 3,531 kWh is 0 kWh, so it sits in the lower-middle part of its class. The method is set out in how the annual cost is calculated.

The figure applies only to the medium draw pattern. A household whose morning hot-water use is heavier or lighter than that pattern may see different energy use, and this page has no figure for other patterns. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 66 gallons for this model, with a rated volume of 40 gallons. Those two values describe supply, not efficiency, so they do not change the 3,531 kWh figure. A household comparing fuel, space and tank size can use the water heater selector. The data here does not show whether this model meets any particular household's peak demand.

Running cost is not stated in the text because it depends on your own utility electricity rate. Multiplying the 3,531 kWh by your rate per kilowatt-hour gives a check, and the cost calculator does this from your ZIP. The energy figure comes from DOE CCD, retrieved 2026-09-19, so later registry changes are not reflected. A modeled installed-cost range appears in its own block on this page with its source and date; it is not a quote. To compare GE40S10BAM01 with another unit of the same class, you can find a same-class replacement by model number. Actual household use is not measured here.