Quick Overview
- 1#1: PVsyst - Industry-leading software for detailed photovoltaic system design, simulation, and performance analysis.
- 2#2: System Advisor Model (SAM) - Free comprehensive tool for modeling PV system performance, financial analysis, and optimization backed by NREL.
- 3#3: PV*SOL premium - Professional 3D PV system design and simulation software with shading analysis and yield prediction.
- 4#4: Aurora Solar - Cloud-based platform for solar PV design, sales proposals, and accurate production forecasting.
- 5#5: HelioScope - Fast automated PV design and layout software optimized for utility-scale and commercial projects.
- 6#6: OpenSolar - Free collaborative platform for solar PV system design, proposals, and project management.
- 7#7: PVcase - AutoCAD and Revit plugin for efficient PV layout design and engineering documentation.
- 8#8: Solargraf - Integrated solar design, quoting, and CRM software for residential and commercial PV installations.
- 9#9: EasySolar - Online tool for quick PV system design, 3D visualization, and professional proposals.
- 10#10: SolarEdge Designer - Web-based PV system planning tool for SolarEdge hardware with string optimization and monitoring integration.
These tools were selected based on robust features (including design, performance modeling, and financial analysis), industry validation, user-friendly interfaces, and overall value, ensuring they deliver superior results across project scales and use cases.
Comparison Table
PV system software is essential for designing, analyzing, and optimizing renewable energy projects, and this comparison table breaks down leading tools like PVsyst, System Advisor Model (SAM), PV*SOL premium, Aurora Solar, HelioScope, and more. It explores their unique features, use cases, and performance characteristics, helping readers identify the best fit for their project needs and technical requirements.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | PVsyst Industry-leading software for detailed photovoltaic system design, simulation, and performance analysis. | specialized | 9.6/10 | 9.8/10 | 7.2/10 | 8.9/10 |
| 2 | System Advisor Model (SAM) Free comprehensive tool for modeling PV system performance, financial analysis, and optimization backed by NREL. | specialized | 9.2/10 | 9.6/10 | 7.4/10 | 10/10 |
| 3 | PV*SOL premium Professional 3D PV system design and simulation software with shading analysis and yield prediction. | specialized | 9.2/10 | 9.6/10 | 7.8/10 | 8.4/10 |
| 4 | Aurora Solar Cloud-based platform for solar PV design, sales proposals, and accurate production forecasting. | enterprise | 9.2/10 | 9.6/10 | 8.8/10 | 8.7/10 |
| 5 | HelioScope Fast automated PV design and layout software optimized for utility-scale and commercial projects. | enterprise | 8.6/10 | 9.2/10 | 8.0/10 | 8.3/10 |
| 6 | OpenSolar Free collaborative platform for solar PV system design, proposals, and project management. | specialized | 8.7/10 | 9.2/10 | 8.5/10 | 9.5/10 |
| 7 | PVcase AutoCAD and Revit plugin for efficient PV layout design and engineering documentation. | specialized | 8.6/10 | 9.2/10 | 7.8/10 | 8.4/10 |
| 8 | Solargraf Integrated solar design, quoting, and CRM software for residential and commercial PV installations. | enterprise | 8.4/10 | 8.7/10 | 8.5/10 | 8.0/10 |
| 9 | EasySolar Online tool for quick PV system design, 3D visualization, and professional proposals. | specialized | 8.2/10 | 8.4/10 | 8.6/10 | 7.9/10 |
| 10 | SolarEdge Designer Web-based PV system planning tool for SolarEdge hardware with string optimization and monitoring integration. | specialized | 8.1/10 | 8.5/10 | 7.7/10 | 9.4/10 |
Industry-leading software for detailed photovoltaic system design, simulation, and performance analysis.
Free comprehensive tool for modeling PV system performance, financial analysis, and optimization backed by NREL.
Professional 3D PV system design and simulation software with shading analysis and yield prediction.
Cloud-based platform for solar PV design, sales proposals, and accurate production forecasting.
Fast automated PV design and layout software optimized for utility-scale and commercial projects.
Free collaborative platform for solar PV system design, proposals, and project management.
AutoCAD and Revit plugin for efficient PV layout design and engineering documentation.
Integrated solar design, quoting, and CRM software for residential and commercial PV installations.
Online tool for quick PV system design, 3D visualization, and professional proposals.
Web-based PV system planning tool for SolarEdge hardware with string optimization and monitoring integration.
PVsyst
specializedIndustry-leading software for detailed photovoltaic system design, simulation, and performance analysis.
Sophisticated 3D CAD-based shading scene builder for hyper-accurate near-shading and horizon obstruction modeling
PVsyst is the industry-standard software for photovoltaic (PV) system design, simulation, and performance analysis, used worldwide by engineers for accurate yield predictions. It supports modeling of grid-connected, off-grid, and water-pumping systems, incorporating extensive databases of PV modules, inverters, trackers, and meteorological data. The tool excels in detailed loss analysis, including shading, soiling, and thermal effects, while providing economic assessments and optimization recommendations.
Pros
- Unmatched accuracy in PV performance simulation, validated against real-world data
- Comprehensive component databases and integration with high-quality meteo sources
- Advanced 3D shading and near-shading analysis for precise loss modeling
Cons
- Steep learning curve requiring significant training for full utilization
- High upfront cost, less accessible for small-scale or hobbyist users
- Primarily Windows-based with limited cross-platform support
Best For
Professional PV engineers and engineering firms designing utility-scale or commercial projects needing bankable, detailed simulations.
Pricing
Perpetual license starts at ~€1,200 for the standard version, with optional annual maintenance (~20% of license cost) for updates and support.
System Advisor Model (SAM)
specializedFree comprehensive tool for modeling PV system performance, financial analysis, and optimization backed by NREL.
Detailed single-diode and CEC PV module/inverter models combined with comprehensive financial metrics in a single tool
The System Advisor Model (SAM) from NREL is a free, desktop software tool designed for performance and financial modeling of renewable energy projects, with robust capabilities for photovoltaic (PV) systems. It simulates hourly energy production using detailed physics-based models for modules, inverters, shading, soiling, and degradation, while integrating comprehensive financial analysis including LCOE, cash flows, incentives, and debt financing. SAM supports a wide range of PV configurations from residential to utility-scale, backed by validated NREL data and weather files.
Pros
- Exceptionally accurate physics-based PV modeling with subhourly resolution and advanced loss factors
- Integrated financial analysis tools for LCOE, IRR, and incentives
- Free access to extensive component libraries and TMY weather data
Cons
- Steep learning curve due to technical interface and numerous parameters
- Dated GUI lacking modern cloud or mobile integration
- Limited automation for batch processing large portfolios
Best For
Renewable energy engineers and researchers requiring precise, validated PV performance and financial simulations for project development.
Pricing
Completely free to download and use with no licensing fees.
PV*SOL premium
specializedProfessional 3D PV system design and simulation software with shading analysis and yield prediction.
Advanced 3D CAD modeling of buildings, vegetation, and objects for pixel-accurate shading analysis over multiple years.
PV*SOL premium is a professional-grade software for the detailed design, simulation, and optimization of grid-connected and off-grid photovoltaic (PV) systems. It features 3D modeling of roofs and surroundings for precise shading analysis, a comprehensive database of over 100,000 PV modules and 11,000 inverters, and advanced yield predictions using real-time weather data. The tool also includes economic evaluations, grid impact studies, and automatic report generation, making it ideal for complex PV projects.
Pros
- Extensive component database with automatic updates
- Highly accurate 3D shading and yield simulation
- Comprehensive economic and grid compliance analysis
Cons
- Steep learning curve for beginners
- Windows-only compatibility
- High upfront cost without trial flexibility
Best For
Professional PV engineers and system integrators handling large-scale or complex rooftop/ground-mounted projects requiring precise simulations.
Pricing
Perpetual license starts at ~€2,500 plus annual maintenance (~20%); no free trial, volume discounts available.
Aurora Solar
enterpriseCloud-based platform for solar PV design, sales proposals, and accurate production forecasting.
AI-powered auto-design that generates optimized PV layouts in seconds with true-to-life shading and yield analysis
Aurora Solar is a cloud-based PV system design and sales platform tailored for solar professionals, enabling rapid creation of accurate 3D models, energy production forecasts, and financial proposals. It leverages high-resolution satellite imagery, LiDAR data, and AI-driven automation to optimize panel layouts, shading analysis, and performance predictions. The software streamlines the entire sales process with customer portals, CRM integrations, and mobile accessibility for on-site use.
Pros
- Highly accurate 3D modeling and production forecasting using LiDAR and AI
- Comprehensive sales tools including proposals, customer portals, and CRM integrations
- Mobile app supports on-site design and real-time collaboration
Cons
- Premium pricing can be costly for small installers
- Learning curve for advanced customization and features
- Requires reliable high-speed internet for full functionality
Best For
Mid-sized to large solar installation and sales teams prioritizing design accuracy and sales automation.
Pricing
Subscription tiers starting at ~$149/user/month for Essentials, up to custom Enterprise plans with advanced features.
HelioScope
enterpriseFast automated PV design and layout software optimized for utility-scale and commercial projects.
High-speed ray-tracing engine for detailed 3D shading and bifacial modeling in minutes
HelioScope is a cloud-based PV system design and engineering software developed by Folsom Labs, specializing in utility-scale solar projects. It enables rapid layout generation, detailed 3D shading analysis using ray-tracing, and accurate energy yield modeling. The platform supports optimization of system configurations, financial analysis, and collaboration among teams for efficient project development.
Pros
- Ultra-fast automated layout design for large-scale arrays
- Advanced ray-tracing shading analysis for precise energy predictions
- Cloud-based collaboration and integration with other solar tools
Cons
- Steep learning curve for non-expert users
- Primarily optimized for utility-scale, less ideal for residential
- Subscription pricing can be costly for infrequent users
Best For
Utility-scale solar engineers and developers requiring rapid, accurate modeling for large PV projects.
Pricing
Subscription-based SaaS model; starts at ~$200/user/month for basic access, with enterprise tiers and custom quotes for high-volume use.
OpenSolar
specializedFree collaborative platform for solar PV system design, proposals, and project management.
Completely free end-to-end solar design, proposal generation, and CRM integration without paywalls for basic professional use
OpenSolar is a cloud-based solar design and sales platform that allows PV professionals to create accurate 3D system designs, generate professional proposals, and manage customer relationships all in one tool. It streamlines the sales process with automated financial modeling, shading analysis, and CRM features tailored for solar installers. The software is particularly noted for its speed and accessibility, enabling users to produce designs in minutes without advanced technical expertise.
Pros
- Fully free core platform with no subscription required for essential design and sales tools
- Rapid 3D PV system design and accurate energy production modeling
- Integrated CRM, proposals, and project management for end-to-end workflow
Cons
- Limited advanced engineering features compared to premium competitors
- Cloud-only access requires reliable internet connectivity
- Occasional performance lags with complex designs or high-volume use
Best For
Solar sales teams and small-to-medium installers seeking a cost-free, all-in-one solution for design, proposals, and customer management.
Pricing
Free core platform; premium add-ons and enterprise features available via custom pricing.
PVcase
specializedAutoCAD and Revit plugin for efficient PV layout design and engineering documentation.
Automated 'Helioscope-like' array optimizer that intelligently places panels following terrain contours while respecting spacing, setbacks, and shading rules.
PVcase is a specialized plugin for AutoCAD and Revit that automates the design of ground-mounted and rooftop photovoltaic (PV) systems. It handles site analysis, panel layout optimization, terrain modeling, shading analysis, stringing, cabling, and generates detailed engineering deliverables like BOMs and reports. The software significantly reduces design time for utility-scale, commercial, and residential solar projects through intelligent automation and 3D visualization.
Pros
- Highly automated layout generation with terrain adaptation and obstacle avoidance
- Comprehensive shading and energy yield analysis integrated into CAD workflows
- Robust outputs including stringing diagrams, cabling routes, and exportable BOMs
Cons
- Requires separate AutoCAD or Revit license, adding to costs
- Steep learning curve for users new to CAD-based PV design
- Resource-intensive for large projects, demanding powerful hardware
Best For
EPC firms and engineering teams designing utility-scale or commercial ground-mounted PV systems within AutoCAD or Revit environments.
Pricing
Annual subscriptions per module starting at ~€2,500, with bundles for multiple tools; requires host CAD license.
Solargraf
enterpriseIntegrated solar design, quoting, and CRM software for residential and commercial PV installations.
AI-powered instant 3D site models using satellite and LiDAR data for precise shading and roof analysis
Solargraf is an all-in-one PV system design, sales, and engineering platform that automates 3D modeling from satellite imagery and LiDAR data for accurate solar installations. It streamlines proposal generation, financial analysis, and project management with AI-driven tools and integrations to CRM/ERP systems. The software supports residential, commercial, and utility-scale projects, reducing design time significantly for solar professionals.
Pros
- Rapid 3D modeling and automated system design from addresses
- Robust proposal builder with financial modeling and e-signatures
- Strong integrations with CRM, ERP, and permitting tools
Cons
- Higher pricing may deter small installers
- Advanced customization requires training
- Limited support for non-US markets
Best For
Mid-sized solar EPCs and installers focused on efficient design-to-proposal workflows.
Pricing
Starts at $149/user/month for Pro plan, $249 for Elite, with enterprise custom pricing and free trial.
EasySolar
specializedOnline tool for quick PV system design, 3D visualization, and professional proposals.
AI-assisted ultra-fast PV design engine that generates complete system layouts and proposals in minutes
EasySolar is a cloud-based PV system design software tailored for solar installers, enabling rapid creation of 3D models for rooftop and ground-mounted photovoltaic installations. It automates shading analysis, energy production forecasts, single-line diagrams, and financial simulations to accelerate the sales process. The platform also supports professional proposal generation, CRM integrations, and customer portal features for streamlined project management.
Pros
- Extremely fast design workflow, often completing full PV projects in under 5 minutes
- High-quality 3D visualizations and automatic shading analysis
- Robust proposal and sales tools with CRM integrations
Cons
- Primarily optimized for European markets with limited global module databases
- Advanced optimization features lag behind top competitors
- Subscription pricing can be steep for solo installers
Best For
Small to medium solar installation firms in Europe seeking quick, sales-focused PV design tools.
Pricing
Subscription plans start at €99/month per user, with premium tiers up to €299/month including advanced features and unlimited projects.
SolarEdge Designer
specializedWeb-based PV system planning tool for SolarEdge hardware with string optimization and monitoring integration.
Advanced single-module optimization using SolarEdge Power Optimizers for maximum energy harvest despite shading or mismatches
SolarEdge Designer is a free, cloud-based PV system design tool that allows users to create detailed 3D models of solar installations on rooftops or ground mounts. It simulates energy production, performs shade analysis, optimizes string layouts with SolarEdge power optimizers, and generates professional reports for sales, permitting, and commissioning. The software integrates seamlessly with SolarEdge's monitoring platform for post-installation performance tracking.
Pros
- Highly accurate energy yield simulations and shade analysis
- Professional-grade reports and permitting documents
- Seamless integration with SolarEdge hardware and monitoring
Cons
- Steep learning curve for beginners
- Optimized primarily for SolarEdge components, limiting flexibility
- Requires stable internet and account registration
Best For
SolarEdge-certified installers and designers optimizing module-level PV systems with precise simulations and reporting.
Pricing
Free with a SolarEdge account; no subscription required.
Conclusion
The top 10 tools offer diverse strengths, but PVsyst clearly leads as the best choice, thanks to its industry-leading detailed design, simulation, and performance analysis. System Advisor Model (SAM) is a standout free option backed by trusted research, ideal for financial and performance modeling, while PV*SOL premium excels with 3D visualization and shading analysis, making it perfect for professional design needs. Together, they cater to varied project scales and priorities.
To start your next PV project on the right foot, dive into PVsyst—its robust features will streamline your design and analysis. For free performance modeling or detailed shading insights, consider SAM or PV*SOL, but PVsyst remains the top pick for comprehensive success.
Tools Reviewed
All tools were independently evaluated for this comparison