Top 10 Best Solar Estimate Software of 2026

Aurora Solar is a leading cloud-based solar design and sales platform that enables solar professionals to create highly accurate PV system designs, 3D visualizations, and customized proposals. It uses advanced satellite imagery, LiDAR data, and physics-based modeling for precise energy yield predictions, shading analysis, and financial modeling. The software integrates seamlessly with CRM systems and automates workflows from site assessment to permitting, making it ideal for scaling solar sales operations.

OpenSolar is a cloud-based solar design and sales platform that enables solar professionals to generate accurate 3D system designs, proposals, and financial analyses from satellite imagery with minimal input. It streamlines the entire sales process, from site assessment and shading analysis to contract generation and CRM integration. The software is particularly noted for its speed in creating professional proposals that help close deals faster.

HelioScope is a cloud-based solar design and engineering platform designed for professional PV system modeling, performance simulation, and proposal generation. It specializes in accurate 3D rooftop modeling, advanced shading analysis using ray-tracing, and optimization for both residential and commercial projects. The software supports batch processing for large portfolios and integrates financial modeling to streamline engineering workflows for solar installers and EPC firms.

PVsyst is a professional-grade photovoltaic system design and simulation software used for detailed modeling and performance prediction of solar PV installations. It excels in simulating complex systems, including module layouts, inverter configurations, shading effects via 3D modeling, and grid interactions, providing accurate yield estimates and loss analyses. Widely trusted in the industry for engineering-grade precision, it generates comprehensive reports for feasibility studies, bankability, and optimization.

Solargraf is a cloud-based solar design and sales software that automates the creation of 3D solar system models, proposals, and financial estimates using satellite imagery, LiDAR data, and AI-driven tools. It streamlines the process from site analysis and shade modeling to customizable proposals with integrated financing options. The platform supports team collaboration and integrates with popular CRMs, monitoring systems, and permitting tools for end-to-end solar sales efficiency.

PV*SOL, developed by Valentin Software, is a professional-grade photovoltaic system design and simulation tool used for planning grid-connected and standalone solar PV installations. It enables detailed 3D modeling of roofs and surroundings, component selection from extensive databases, and precise yield forecasts incorporating shading, weather data, and system losses. The software generates comprehensive reports, economic analyses, and visualizations to support optimal system sizing and performance predictions.

EasySolar is a cloud-based solar design and proposal software that allows installers to generate professional 3D solar system designs and estimates quickly using satellite imagery for roof modeling. It automates panel placement, shading analysis, financial calculations, and proposal generation to accelerate the sales process. The platform includes CRM tools, customer portals, and mobile apps for on-site use, making it ideal for sales-focused solar businesses.

The System Advisor Model (SAM) from NREL is a free, desktop software tool designed for modeling the performance and financial viability of renewable energy systems, with robust capabilities for solar PV, concentrating solar power (CSP), and hybrid systems including storage. It enables users to simulate hourly energy production, optimize system sizing, and calculate key metrics like levelized cost of energy (LCOE) using validated physics-based models and weather data integration. Primarily used for detailed engineering and economic analyses, SAM supports a wide range of incentives, degradation rates, and financing options.

SolarEdge Designer is a free, cloud-based photovoltaic (PV) system design tool tailored for SolarEdge hardware, enabling users to create detailed solar installations. It features 3D roof modeling, module placement, automatic string design, shading analysis, and energy production estimates. The software generates professional proposals, single-line diagrams, and permit packages, with seamless integration into SolarEdge's monitoring platform for post-installation tracking.

Enphase Design Center is a web-based solar design and estimation tool tailored for professionals installing Enphase microinverter systems. It enables users to model roofs in 3D, perform shading analysis, auto-generate optimized PV array layouts, and produce professional proposals with financial estimates. Integrated with the Enphase Enlighten platform, it supports seamless system commissioning and monitoring from design through installation.