ProjFi

proj.fi is a project-finance modelling platform for solar and battery storage projects. This connector lets Claude work on the proj.fi projects you can already open in proj.fi. It requires an existing proj.fi account; access is by approval, and you can request it from the sign-in page.

What Claude can do with it:

• List your projects and saved versions, and read inputs with their units and sources.
• Calculate results with proj.fi's deterministic engine: levered and unlevered IRR, NPV, LCOE, DSCR, debt sizing, tax equity, sources and uses.
• Run sensitivities, named scenarios, downside cases, goal seek, breakeven and refinancing, with optional what-if values that are never saved.
• Trace how a result is calculated and compare two versions.
• Draft IC and lender memos, one-pagers and charts, and export the full Excel model (download link).
• Paste a PPA or term sheet and Claude maps its terms to proj.fi inputs, with units, and proposes them for your review.
• Start a new solar or storage model from proj.fi's standard starting values, calculate it, and send it to proj.fi as an inputs link you review before applying.
• Propose input changes. Proposals wait as a review in your Working model and change nothing until you accept them in proj.fi.

How access works: you sign in with your proj.fi account (OAuth) and choose Read projects or Read and propose changes. Claude sees only what you can see in your own organization. Tool calls are written to your organization's audit log without their arguments or values. You can revoke the connection in proj.fi under Settings, Connected apps, and access ends at once.

Results are proj.fi model outputs for analysis, not investment, tax, legal or accounting advice.