June 2026
What makes a solar feasibility study bankable
What a credit committee actually checks: P50 vs P90 exceedance, documented uncertainty, and a loss cascade that reconciles. Methodology over decoration.
Resources · Field notes
Field notes from a working EPC.
We publish the methodology we run on — the same yield maths, billing mechanics and compliance reading that operate our own EPC arm in Cairo every day. No gated PDFs and no content marketing; working notes, kept honest by daily use.
§01 · THE NOTES
Three working primers
June 2026
Progress billing, SOV and retainage for C&I solar
A working primer with a worked example: the schedule of values, draws against balance-to-finish, two-moiety retention release — and where spreadsheets quietly lose money.
June 2026
Egypt’s e-invoicing mandate and the solar EPC
What the ETA actually requires — structured, coded lines and a QR — and what that means for progress claims, retention and withholding in an EPC’s billing flow.
See the methodology running.
Demos are founder-led — the person on the call writes the code and runs an EPC on it. Bring one of your own projects and we will walk it through, lead to study to draw to certificate.
Founder-led demos · no free trial · pay-per-PDF is the on-ramp.