☀️ REModel — Renewable Energy Financial Modeling Platform

Python calculation engine + FastAPI backend + Next.js frontend for Indian renewable-energy (solar) financial modeling. This is the software embodiment of the day job.

Purpose

Turn the manual, spreadsheet-bound work of utility-scale solar project finance into a structured platform — site/technical inputs → energy yield → financial model (debt sizing, returns).

Why it matters

Directly fuses Manohar's two strongest domains: Renewables Overview and Finance Overview. The professional version of what he does at Renewables Overview.

Architecture

Calc engine (Python): the modeling core (links conceptually to 8760 Energy Simulation)
API (FastAPI): serves model runs
Frontend (Next.js): inputs + visual outputs
Docs present: PROJECT.md, PRD.md, CODEBASE_INVESTIGATION.md, RE_Financial_Modeling_Platform PRD.md

Status & history

53 commits over a focused May 2026 sprint.

Open questions / next

Is REModel intended as a product, an internal tool, or a portfolio piece?
Relationship to the 8760 Energy Simulation platform — same codebase or successor?

8760 Energy Simulation · Renewables Overview · MOC - Renewables · Finance Overview

Modeling detail (from build sessions)

Tech basis: an 8760 hourly profile (e.g. Rajasthan), CUF prorated (e.g. 21% → 19.28%), extended to 25-year generation (leap-year Feb 29 reuses Feb 28 profile)
Capex → funding waterfall: component-wise capex, funded by a debt + equity mix, progressing in phases
Solar & wind scenarios with configurable defaults
Land costs: upfront Land Lease (5-yr) on a per-acre basis; acreage from DC capacity (~2.5 × Solar DC for fixed module, higher for tracker/wind)
Inputs sheet drives the model (e.g. Solar DC MWdc capacity) → outputs capex/funding/returns tables
UI built with an "agentation" visual-feedback workflow during iteration

Concept link

The energy core is the 8760 Energy Simulation Model (see the knowledge note).

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