Cost:
Typical cost for solar hot water system with high efficiency gas backup: $6,000 - $10,000
Typical cost of complete hybrid system combining solar panels with domestic hot water and radiant house heat - $15,000 to $25,000 depending on the size of the house.
Financial incentives:
30% federal income tax credit of the cost of solar system
$4,000 + Cash incentive from the California Solar Thermal Initiative