From custom dwellings to wind-powered houses to high-performance retrofits, some of the nation’s most energy-efficient homes and their builders were honored this week as winners of the 2011 EnergyValue Housing Awards (EVHA).

The annual award, administered by the NAHB Research Center to challenge builders to elevate standards for energy-efficient construction and foster the adoption of energy-efficiency principles, recognized 12 companies that voluntarily incorporate energy efficiency into all aspects of new-home or retrofit construction by utilizing products and technologies such as solar power and hot water, ultra-efficient building techniques, and energy-saving appliances. The winners were announced during the International Builders' Show in Orlando, Fla.

Finalists were selected from three climate regions (cold, moderate, hot) and four project categories (affordable, custom, multifamily, production). To view the six Gold winners, click on the slide show above. For a list of all winners, click here.