When budgeting for solar energy systems, homeowners should be aware that installation costs can vary significantly based on system size and specifications. A basic 5kW solar system generally falls in the $10,000 to $20,000 range before any incentives. For more comprehensive whole-home systems, particularly those that include battery backups, costs can rise to over $30,000.
The average cost per watt of solar panels is approximately $2.40 to $3.25 in California and slightly higher nationwide. For a typical residential setup, this translates to total costs of around $12,500 to $17,300 for systems that power an entire home. Homeowners should consider these figures to effectively budget for their solar project and explore financing options available for significant upfront investments.