Top 30 Open‑Source Solar PV Simulation Software

Comprehensive Python library for modeling the performance of photovoltaic energy systems, including irradiance, temperature, and system losses.

MATLAB/Octave implementation of the PVlib functions, enabling rapid prototyping of PV system models in a familiar engineering environment.

Python library for detailed electrical mismatch modeling of PV modules and arrays, useful for design‑level loss analysis.

A modular Python framework for multiscale solar cell and module simulation, supporting detailed semiconductor physics.

Open‑source MATLAB/Octave toolbox for thermal analysis of solar collectors and combined PV‑thermal systems.

A lightweight Python simulator for grid‑connected PV systems, focusing on time‑series performance and shading effects.

Open Distribution System Simulator from EPRI, includes detailed PV inverter models for distribution‑level studies.

Agent‑based power system simulation platform with built‑in PV generation models for smart‑grid research.

Whole‑building energy simulation engine that incorporates PV array performance as part of building energy balance.

NREL’s open‑source tool for techno‑economic analysis of renewable energy projects, including detailed PV performance models.

Simple Python library for calculating solar position, irradiance, and PV output based on clear‑sky models.

Reference implementation of the SunSpec Alliance data models, enabling standardized PV inverter communication and testing.

R package for statistical analysis and performance modeling of PV system data, supporting degradation studies.

Tools for processing, cleaning, and visualizing PV performance datasets, with built‑in degradation curve fitting.

Utility library for handling PV module specifications, temperature coefficients, and IEC 61853 performance metrics.

MATLAB toolbox for time‑series analysis of PV output, including shading loss estimation and performance ratio calculation.

Straightforward Python scripts for quick PV system sizing and energy yield estimation using typical meteorological year data.

Java‑based suite for solar geometry, irradiance modeling, and PV array layout optimization.

High‑performance C++ library for large‑scale PV array simulations, supporting parallel execution on HPC clusters.

Open‑source simulator focused on transient analysis of PV inverter control strategies and grid interaction.

Framework for Monte‑Carlo based uncertainty analysis of PV system performance under variable weather inputs.

Octave implementation of module‑level electrical models, enabling rapid prototyping of custom PV cell characteristics.

Command‑line tool for automated layout generation of rooftop PV arrays, integrating GIS data for shading analysis.

Julia package offering fast, differentiable PV performance models suitable for optimization and machine‑learning workflows.

Utilities for downloading, parsing, and preprocessing public PV performance datasets (e.g., NREL PVDAQ, PV‑LIB).

Optimization engine that selects inverter, module, and layout configurations to maximize energy yield and economic return.

MATLAB toolbox for co‑simulating PV generation with distribution grid dynamics, including voltage regulation studies.

Statistical suite for long‑term performance monitoring, degradation trend detection, and reliability analysis of PV plants.

High‑fidelity physics‑based engine for simulating PV cell temperature, spectral response, and module aging effects.