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#2 PVsyst
Industry‑standard PV design and simulation suite with detailed shading, loss modeling, and financial analysis tools.
Free NREL‑maintained tool for performance modeling, financial analysis, and technology comparison across utility‑scale, commercial, and residential PV.
#4 Aurora Solar
Cloud‑based solar design platform offering 3‑D site modeling, automated layout generation, and accurate energy production estimates.
#5 PV*SOL
3‑D PV simulation software with advanced shading analysis, battery storage modeling, and detailed financial reporting.
Web‑based design tool that creates 2‑D/3‑D layouts, performs shading studies, and produces production forecasts for residential and commercial projects.
#7 OpenSolar
Free, open‑source solar design platform with interactive site maps, proposal generation, and integration with CRM systems.
High‑resolution solar resource data combined with layout tools for performance simulation and feasibility studies.
#9 HOMER Energy
Hybrid optimization model for renewable energy systems, enabling techno‑economic analysis of PV‑plus‑storage and micro‑grid projects.
#10 PowerHub
Enterprise‑grade platform for solar asset design, performance monitoring, and portfolio management with API‑driven data exchange.
Design tool tightly integrated with SolarEdge inverters and optimizers, offering layout creation, shading analysis, and quick export of wiring diagrams.
#12 Energy Toolbase
Financial modeling and proposal generation software that couples site‑specific production forecasts with utility rate structures.
#13 REopt Lite
NREL’s web‑based optimizer for renewable energy systems, providing cost‑minimizing configurations for PV, storage, and demand response.
#14 PVComplete
All‑in‑one solar design suite with 3‑D modeling, shading analysis, and automated bill‑of‑materials generation.
Web‑based layout and performance calculator focused on commercial rooftop and ground‑mount projects, with real‑time monitoring integration.
#16 SunDAT
Data‑driven design platform that uses satellite imagery for rapid site assessment, shading analysis, and energy yield estimation.
#17 SolarNexus
Project‑management focused solution that combines design tools, permitting workflow, and stakeholder collaboration in a single cloud hub.
Performance monitoring and reporting suite that also offers pre‑construction energy modeling for residential and commercial PV.
Toolset built around the SunSpec standards for designing, simulating, and validating PV systems with modular component libraries.
#20 SolarCalc
Lightweight calculator for quick PV sizing, financial analysis, and ROI estimation, ideal for early‑stage feasibility work.
Comprehensive design environment that supports 3‑D modeling, shading studies, and integration with major inverter manufacturers.