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Audit · step 1 of 3

Audit your solar proposal.

Any solar PDF — quote, contract, or signed proposal. We extract every field, run our engine on the same system at your address, and produce a one-page variance report.

from $19 · 1 credit, one-time
Privacy
We may use retained files to improve extraction quality. Deleting the audit removes them from your account; email privacy@chart.solar to have the files fully deleted.
AI
Gemini 2.5 Flash on Vertex AI extracts the fields; your files are sent inline, not stored in a Google file service.
Human review
You confirm or correct extracted fields before we run the audit.

The sample is a made-up proposal — no upload, no credit charged.

Up to 5 files: the proposal PDF plus any addenda or photographed pages (PNG, JPG, WEBP, HEIC). Max 15 MB each. Click the zone, press Enter, or use Space to open the file picker.

── what we check ──

year-1 production (kWh)

vs PVWatts on your roof's geometry + NSRDB

assumed utility-rate increases

vs your utility's actual rate history

dealer fee detection

lender APR teardown — what's financing, what's price

inverter sizing (DC:AC + clipping)

too small clips away your midday peak; too big means you overpaid

panel + inverter spec

extracted from the proposal and cross-checked against its own sizing math

incentive stack

state / utility programs — current tax year only

fine print

We are not affiliated with any installer, lender, or panel manufacturer, and we do not sell leads.

Fine print

The variance figures and flags come from a deterministic engine (same inputs, same report, every time) using the proposal fields you confirm before the audit runs. Not financial advice — the audit is a comparison against independent benchmarks the installer doesn't get to choose. Methodology lives at /methodology.