Comparing solar estimates

Look at scope and written terms when comparing solar project options.

Compare the same scope

Ask providers to describe system layout, estimated production assumptions, equipment, ownership or payment terms, and maintenance responsibilities in writing. Different materials or exclusions can change the total, so compare estimates covering the same work.

Ask about changes

Discuss how unexpected conditions or requested changes affect the price and schedule. Ask for a written change approval process.

Review before committing

Confirm the provider’s relevant credentials, insurance, payment schedule, and warranty terms. An estimate request through this website is not a contract for work.