Enter a realistic size
Use the measurement or task count that most closely matches the work contractors will price.
Energy cost planner
Solar Cost & Savings Cost Calculator
Estimate gross system cost and a simple long-term savings range. Adjust the project, market, finish, and complexity to build a useful early budget.
Planning dataUpdated July 2026US national ranges
01
Describe the project
Use approximate measurements for early planning. You can print a revised estimate later.
What this estimate assumes
- Incentives are not deducted because eligibility changes by location.
- Get site-specific production, utility, financing, and tax advice.
Planning guide
Understand the range before you request quotes.
Estimate the gross cost of a residential solar system before incentives, financing, utility rules, and site-specific production modeling.
Example project8 kW systemDefault calculator starting point
Base unit range$2,600–$3,600Before market, finish, complexity, and contingency
Example planning range$22,880–$31,680US average, standard finish, typical complexity, 10% contingency
How to use the calculator
Turn a rough idea into a quote-ready starting point.
This is a planning tool, not a contractor bid. Use the range to define scope, compare like-for-like proposals, and identify the questions that could materially change the final price.
Adjust the project conditions
Choose the local cost level, finish, complexity, and contingency that reflect your actual plan.
Compare complete scopes
Enter contractor quotes and check whether each proposal includes the same materials, labor, permits, and cleanup.
What the planning range includes
- Typical panels, inverter, and mounting hardware
- Standard residential installation labor
- Basic permitting and interconnection allowance
- Planning contingency
What can move the price
- System capacity and equipment selection
- Roof layout, pitch, shade, and access
- Electrical-panel and service condition
- Local labor and interconnection requirements
Items that often sit outside the first estimate
- Roof replacement before installation
- Battery storage and backup hardware
- Financing charges and changing incentives
Common questions
Solar Cost & Savings cost calculator FAQ
How accurate is this estimate?
It is an early planning range based on project size and broad US cost factors. Actual quotes depend on local labor, exact specifications, access, existing conditions, permits, and contractor availability.
Why is the range wide?
The low and high values intentionally cover meaningful differences in finish quality, complexity, market pricing, and hidden scope. Narrow it by defining materials and included work before requesting bids.
How should I compare contractor quotes?
Compare written scope, quantities, product allowances, demolition, cleanup, permits, schedule, warranty, payment terms, and change-order rules—not only the total price.
Continue planning
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