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The Energy Policy and Conservation Act, as amended (EPCA), prescribes energy conservation standards for various consumer products and certain commercial and industrial equipment, including distribution transformers. EPCA also requires the U.S. Department of Energy (DOE) to periodically review its existing standards to determine whether more stringent standards would be technologically feasible and economically justified, and would result in significant energy savings. In the final rule, DOE is adopting amended energy conservation standards for distribution transformers. DOE has determined that the amended energy conservation standards for distribution transformers represent the maximum improvement in energy efficiency that is technologically feasible and economically justified, and would result in the significant conservation of energy.