Quick Answer
The average cost of a roof-mount solar installation ranges from $2.50 to $3.50 per watt, depending on the system size and location.
System Size and Cost
The cost of a roof-mount solar installation primarily depends on the system size. A smaller system of 5 kilowatts (kW) typically costs between $12,500 and $17,500, while a larger system of 10 kW can range from $25,000 to $35,000. System prices decrease as the size increases, making larger systems more cost-effective.
Location and Installation Factors
Location, installation complexity, and labor costs also affect the final price. Areas with high demand for solar installations, such as California, tend to have higher prices due to increased demand and competition for skilled labor. Additionally, installing solar panels on a complex roof or in a remote area can increase the cost due to the additional labor required. For example, installing solar panels on a multi-story building or in an area with limited access may double the installation cost.
Inverter and Mounting Hardware Costs
While the solar panels themselves account for a significant portion of the installation cost, inverter and mounting hardware expenses should not be overlooked. High-efficiency inverters and premium mounting hardware can add 10-20% to the overall installation cost. However, these components are essential for optimal system performance and durability. For instance, a high-quality inverter may cost $1,000 to $2,000, while premium mounting hardware can range from $500 to $1,000.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.