Tool positioning
SolarReviews vs EnergySage vs Wattcrunch
These tools solve different parts of the solar buying journey. The best path is usually to run private math first, then compare real proposals and installer reputation.
Quick answer
Use marketplace and review sites to find installers and read customer feedback. Use Wattcrunch before and after quotes to verify system size, savings, payback, export-credit assumptions, and price per watt.
Notes updated 2026-10-09
- Best for
- Homeowners deciding which solar research tool to use first.
- Inputs needed
- electric bill, target quote price, utility name, proposal details
- Formula used
- Best buying process = private estimate → multiple quotes → quote audit → license/review verification.
- Method references
- public competitor positioning, Wattcrunch methodology, utility and incentive sources
What the public calculators offer
EnergySage starts with property address, property type and average monthly bill. Its page describes roof-based estimates and actual local offers. That is useful for property-led estimates and quote discovery; Wattcrunch does not provide a live installer-offer feed.
SolarReviews exposes ZIP code, utility, roof direction and pitch, plus panel count, bill comparison, financing, batteries, NPV and IRR. Compare the same production, ownership cost and tariff assumptions before comparing outputs.
Wattcrunch focuses on email-free planning and transparent arithmetic: check self-use versus export value, loan principal and interest, and itemized quote scope. No calculator replaces a roof inspection, utility eligibility decision or written installer contract.
Public-page features checked October 9, 2026. We have not benchmarked equivalent-input outputs or loading speed, so this is not an accuracy, speed or installer-quality ranking. Features can change.
| User need | Review / marketplace path | Wattcrunch path |
|---|---|---|
| Check installer reputation | Review and marketplace sites are useful because they focus on installer discovery and customer feedback. | Use Wattcrunch to build the math checklist before you evaluate installer claims. |
| Get live bids | A quote marketplace can help solicit installer proposals. | Wattcrunch does not collect bids; it helps you understand whether a bid is reasonable. |
| Run private estimates | Some experiences may require contact information or connect you with sales teams. | Calculators run without an email wall and keep assumptions visible. |
| Verify 2026 incentive assumptions | Always confirm how a proposal handles the expired homeowner 25D credit. | Wattcrunch defaults homeowner-owned 2026 federal 25D value to $0. |
Start private math
Build a solar plan before sharing your contact information.
Audit a quote
Normalize price, financing, production, and equipment claims.
Verify an installer
Use official license, insurance, credential, and contract checks.