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#2 Aurora Solar
Comprehensive cloud‑based solar design suite with 3‑D modeling, shade analysis, financial proposals and automated permitting.
#3 HelioScope
Web‑based PV design tool that combines detailed shading analysis with performance modeling and quick layout generation.
#4 PVSyst
Industry‑standard desktop software for detailed system sizing, shading studies, and long‑term energy yield simulations.
Free NREL‑maintained tool for performance and financial modeling of solar (and other renewable) projects.
#6 PV*SOL
3‑D PV simulation software that models shading, module orientation, and provides detailed yield and loss analysis.
#7 PVcase
AI‑driven 3‑D design platform focused on utility‑scale ground‑mount projects, with automatic layout generation and terrain handling.
#8 HOMER Energy
Hybrid optimization model for renewable energy systems, enabling design of grid‑connected and off‑grid solar configurations.
Integrated design tool that creates site‑specific layouts, performs shade analysis and produces procurement‑ready documentation.
Online planner that combines high‑resolution solar resource data with layout tools for quick feasibility studies.
NREL’s free web tool for estimating the energy production of grid‑connected PV systems of any size.
#12 SunDAT
Professional design software for residential and commercial PV systems, offering 3‑D modeling, shading, and detailed reports.
GIS‑based planning suite that helps utilities and developers map solar potential, assess land suitability and generate layouts.
Consumer‑focused calculator that provides quick energy yield estimates and cost projections for residential projects.
Free web tool for designing Tigo‑enabled PV systems, including module layout, optimizer placement and performance forecasts.
#16 OpenSolar
Open‑source platform for creating interactive solar proposals, 3‑D site models and financial analyses.
Cloud‑based design and performance monitoring suite that supports system sizing, shading analysis and real‑time data integration.
#18 RETScreen Expert
Comprehensive clean‑energy management software for feasibility, performance, and financial analysis of solar projects.
#19 SolarNexus
Web‑based PV design tool that streamlines layout creation, shade analysis and proposal generation for installers.
High‑resolution solar resource mapping and GIS analysis platform for large‑scale site assessment and planning.
#21 EasySolar
User‑friendly desktop application for quick residential PV design, offering drag‑and‑drop layout, shading checks and instant yield estimates.