A one-click engine for bankable solar proposals
We turned a days-long manual workflow into a single click: Greentec now converts a solar production simulation (the projected energy a proposed site will generate) into a bankable financial model and a client-ready proposal in minutes.
The challenge
Greentec Energy finances, builds, and operates solar “Energy as a Service” systems for large industrial clients across Panama, Germany, and the Caribbean. Every commercial proposal meant the same manual workflow: pull generation data from the HelioScope solar-design software by hand, feed it through a detailed Excel financial model, and assemble a client-facing PowerPoint slide by slide.
It took days per opportunity. As deal flow grew, a process that lived in spreadsheets and manual steps simply couldn’t keep pace with the team’s ambition. Every proposal was a fresh round of careful, time-consuming assembly.
The solution
We built the Greentec Solar EaaS Modeler: a web application that imports a HelioScope simulation, runs Greentec’s full financial model automatically, compares pricing scenarios side by side, and exports the branded proposal deck in a single click.
Under the hood, Greentec’s model is rebuilt as a rigorously tested engine that reproduces its numbers exactly and re-validates them on every run. The figures that go in front of banks and clients come out consistent, defensible, and audit-ready, every single time.
Results
- Proposal turnaround collapsed from days to minutes. Import the simulation, run the model, export the deck: one click, every time.
- Every figure is audit-ready, down to the cent. The model re-validates itself on every run, so the returns Greentec takes to the bank are precise and stand up to due diligence, with no spreadsheet guesswork and no manual re-checking.
- Lighter, sharper proposals. We rebuilt the proposal template and cut the exported deck by ~73% (14.3 MB → 3.7 MB) with no loss of content, so offers send cleanly through corporate email and open instantly on mobile.
Conclusion
Greentec now produces accurate, bankable solar proposals in minutes instead of days. The platform is built to scale to new sites and service lines, turning a slow, manual workflow into a repeatable engine for closing energy deals.