The average cost to install solar panels is $10,600 to $26,500 for a 6 kW to 12 kW system, after subtracting the 30% federal tax credit. Residential solar panels cost $2.53 to $3.15 per watt, including installation. However, the cost of solar panels continues to decrease each year as solar energy becomes more popular.
The cost to convert your house to solar power depends on the type of solar panels, inverter, and equipment, your location, your energy needs, and local labor rates. Labor costs are higher if your home has multiple stories, dormers, skylights, or a steeply pitched roof.