About

An end-to-end solar PV design and bankability platform!

IST PVSolar Simulator V9.0.0 developed by IST Sunpower System (https://istsunpowersystem.in/), is a comprehensive solar PV design and bankability platform developed for the residential, C&I, and utility-scale solar market. It integrates standards-based energy yield simulation, electrical design, and financial due-diligence reporting into a unified workflow, enabling project stakeholders to move from feasibility assessment to bankable documentation with a consistent, auditable dataset.

Our mission

To equip solar professionals across India — from residential installers to utility-scale developers — with a single, standards-compliant platform that takes a project from technical design through to bankable, investor-ready documentation, replacing fragmented workflows with one accurate, auditable source of truth.

Our Vision

To become the trusted engineering backbone of India's solar transition — where every project, regardless of scale, is designed with the rigor, transparency, and financial discipline needed to earn the confidence of engineers, EPCs, and lenders alike.

This is not a single tool

it's a full EPC-to-financial-close suite

Core yield engine

  • Transposition model, single/two-diode model
  • View-factor bifacial measure albedo
  • SAT backtracking (algorithm)
  • 3D near-shading + horizon shading maps

Risk & bankability

  • P50/P75/P90/P95 exceedance (5,000 analysis)
  • Equity IRR / DSCR, lender due-diligence checklist
  • Country risk, ESAP, offtaker credit, insurance fields

India-specific

  • CEA / IS 16169 protection & cable schedule
  • MNRE CO₂ factor, ALMM-ready module DB fields
  • PM Surya Ghar / DPR-style report layout