Solar Basics
How to Read a Solar Proposal
Learn which equipment details, assumptions, and cost items deserve a closer look.
Ecovanta Editorial Team
6 min read
A solar proposal can be packed with numbers. Reading it carefully helps you understand what you are paying for and how the estimates were built.
System size and equipment
Look for the total system size, usually in kilowatts, and the exact models of panels and inverters. Model numbers let you check specifications and warranties yourself.
Production estimates
Estimates depend on assumptions about weather, shade, orientation, and system losses. Ask how they were calculated and treat them as projections rather than guarantees.
Costs and payment schedule
Total price and what it includes
Deposit and payment milestones
Any incentives assumed in the price
Costs that could change after site review
Compare like with like
When you have more than one proposal, compare scope, equipment, and assumptions side by side. The lowest price is not always the best value if the scope is different.
This article is general information, not personal advice. Requirements, incentives, and regulations vary by location.
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