Heating a residence and the domestic water supply with solar energy is technically feasible in Kentucky. However, it is not feasible to provide 100 percent of the heat requirements. Some backup system is needed for continuous heat during cloudy weather and the cold part of winter. Both passive and active solar heating systems are technically feasible.
Parker, Blaine F. and Turner, Larry W., "Energy Fact Sheet: Residential Solar Heating" (1978). Agricultural Engineering Energy Series. 29.