System Cost for Residential Property
Residential systems range in cost depending upon the size of the house and energy usage patterns. A home with a $1,000/month electric utility bill will require a significantly larger system from a home with a $100/month bill.
As a general rule, a 2-kilowatt system that would meet the needs of an energy efficient home would cost $14,000 to $18,000, or $7 to $9 per watt. A larger, less efficient home would cost $35,000 - $50,000. The system cost breaks down as follows: approximately 60%-70% solar modules, 15% inverter and 20% labor.
Sizing the system to maximize performance and minimize capital outlay is an important function of the solar contractor or integrator. Use the Calculate Cost tool to get an indication of the size and cost of a system that will meet your needs. It will help if you have a few pieces of information on hand; by reviewing your utility bill, you will get an idea of the annual electrical usage in kilowatt-hours (kWh); you can also contact your utility provider directly to get additional detailed information on your electrical power usage.