GITNUXSOFTWARE ADVICE
Utilities PowerTop 8 Best Solar Designing Software of 2026
Explore top solar designing software tools to streamline projects.
How we ranked these tools
Core product claims cross-referenced against official documentation, changelogs, and independent technical reviews.
Analyzed video reviews and hundreds of written evaluations to capture real-world user experiences with each tool.
AI persona simulations modeled how different user types would experience each tool across common use cases and workflows.
Final rankings reviewed and approved by our editorial team with authority to override AI-generated scores based on domain expertise.
Score: Features 40% · Ease 30% · Value 30%
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Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
SAM (System Advisor Model)
Time-series dispatch and performance modeling across PV, CSP, and hybrid configurations
Built for engineering teams running PV, CSP, or hybrid performance studies and optimization.
SolarEdge Designer
Automated engineering checks for SolarEdge-compatible PV and storage designs
Built for installer and engineering teams standardizing SolarEdge designs at scale.
SolarEdge P-Series Designer
P-series inverter and string configuration guidance built around SolarEdge design constraints
Built for installers and designers standardizing SolarEdge P-series designs for proposals.
Comparison Table
This comparison table maps leading solar designing software tools such as SAM for performance modeling, SolarEdge Designer and SolarEdge P-Series Designer for system layouts, and AutoCAD Electrical and QGIS for drafting and geospatial workflows. Each row highlights how the tools support key tasks across PV design, component selection, site data handling, and output formats so teams can match software capabilities to project requirements.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | SAM (System Advisor Model) SAM provides techno-economic and performance modeling for PV and other renewable energy systems using NASA, meteorological, and component inputs. | techno-economic modeling | 8.3/10 | 8.8/10 | 7.2/10 | 8.6/10 |
| 2 | SolarEdge Designer SolarEdge Designer creates PV design documentation with module and inverter string configuration and performs electrical and energy checks. | installer design | 8.2/10 | 8.6/10 | 7.8/10 | 8.0/10 |
| 3 | SolarEdge P-Series Designer SolarEdge P-Series Designer helps configure and validate PV layouts and stringing for SolarEdge module-level electronics systems. | stringing design | 8.2/10 | 8.6/10 | 8.1/10 | 7.9/10 |
| 4 | AutoCAD Electrical AutoCAD Electrical supports electrical diagram creation and wiring documentation used in solar plant and balance-of-system design workflows. | electrical CAD | 7.0/10 | 7.3/10 | 6.6/10 | 7.0/10 |
| 5 | QGIS QGIS enables solar site analysis workflows with GIS layers for terrain, constraints, and candidate placement using spatial tools and plugins. | GIS analysis | 8.0/10 | 8.6/10 | 7.4/10 | 7.9/10 |
| 6 | OpenStudio OpenStudio provides architectural and solar design workflows with geometry and shading inputs to analyze solar performance needs. | design analysis | 7.3/10 | 7.5/10 | 6.8/10 | 7.5/10 |
| 7 | PVcase PVcase designs solar PV systems using roof measurements and engineering checks to produce layouts and bill-of-materials outputs. | roof design | 8.1/10 | 8.6/10 | 7.9/10 | 7.6/10 |
| 8 | Trimble SketchUp SketchUp supports solar shading and mounting design via 3D modeling and integration with solar analysis and export workflows. | 3D modeling | 7.3/10 | 7.1/10 | 8.3/10 | 6.5/10 |
SAM provides techno-economic and performance modeling for PV and other renewable energy systems using NASA, meteorological, and component inputs.
SolarEdge Designer creates PV design documentation with module and inverter string configuration and performs electrical and energy checks.
SolarEdge P-Series Designer helps configure and validate PV layouts and stringing for SolarEdge module-level electronics systems.
AutoCAD Electrical supports electrical diagram creation and wiring documentation used in solar plant and balance-of-system design workflows.
QGIS enables solar site analysis workflows with GIS layers for terrain, constraints, and candidate placement using spatial tools and plugins.
OpenStudio provides architectural and solar design workflows with geometry and shading inputs to analyze solar performance needs.
PVcase designs solar PV systems using roof measurements and engineering checks to produce layouts and bill-of-materials outputs.
SketchUp supports solar shading and mounting design via 3D modeling and integration with solar analysis and export workflows.
SAM (System Advisor Model)
techno-economic modelingSAM provides techno-economic and performance modeling for PV and other renewable energy systems using NASA, meteorological, and component inputs.
Time-series dispatch and performance modeling across PV, CSP, and hybrid configurations
SAM is a performance modeling suite built for solar energy system design and analysis, with physics-based algorithms for PV, CSP, and hybrid plants. It supports detailed component and operational modeling through configurable system blocks and time-series simulations. Analysts can generate outputs for energy yield, dispatch behavior, and efficiency losses under site and design inputs. Its strongest fit is iterative engineering studies that require traceable assumptions and scenario comparisons rather than click-to-generate layouts.
Pros
- Component-level PV and CSP modeling with detailed loss accounting
- Time-series simulations support operational studies beyond annual averages
- Scenario comparisons enable optimization of design and performance targets
Cons
- Setup and calibration demand technical domain knowledge and careful inputs
- Workflow is less intuitive than point-and-click solar design tools
- Modeling flexibility can slow first-time projects without templates
Best For
Engineering teams running PV, CSP, or hybrid performance studies and optimization
SolarEdge Designer
installer designSolarEdge Designer creates PV design documentation with module and inverter string configuration and performs electrical and energy checks.
Automated engineering checks for SolarEdge-compatible PV and storage designs
SolarEdge Designer centers on workflow-guided solar PV and storage proposal design tied to SolarEdge components. It supports system layout, shading and electrical checks, and generates design outputs aligned to SolarEdge ecosystems. The tool focuses on repeatable engineering-level documentation rather than open-ended CAD-style modeling. Project setup and validation speed improve for teams standardizing on SolarEdge hardware.
Pros
- Tight integration with SolarEdge devices for consistent electrical design outcomes
- Guided workflow reduces manual errors during system configuration and layout
- Generates design documentation suitable for engineering review and handoff
Cons
- Best results require standard SolarEdge module and inverter assumptions
- Shading and optimization workflows can feel heavy for simple residential layouts
- Less flexible for custom system architectures outside the SolarEdge stack
Best For
Installer and engineering teams standardizing SolarEdge designs at scale
SolarEdge P-Series Designer
stringing designSolarEdge P-Series Designer helps configure and validate PV layouts and stringing for SolarEdge module-level electronics systems.
P-series inverter and string configuration guidance built around SolarEdge design constraints
SolarEdge P-Series Designer stands out by centering system planning around SolarEdge P-series inverter configurations and design constraints. The tool supports module stringing, inverter and power sizing inputs, and layout outputs tailored for SolarEdge hardware pairing. It also ties electrical design decisions to reporting artifacts used during proposal preparation. The workflow is most effective for projects that match SolarEdge ecosystem assumptions and standard deployment patterns.
Pros
- SolarEdge-specific design logic for P-series inverter and module compatibility
- Stringing and electrical configuration inputs reduce manual cross-checking errors
- Generates design outputs aligned to SolarEdge proposal and documentation workflows
Cons
- Best results rely on SolarEdge equipment assumptions and predefined constraints
- Limited flexibility for nonstandard inverter or multi-vendor architecture
- Layout and reporting depth can feel narrow versus broader PV design suites
Best For
Installers and designers standardizing SolarEdge P-series designs for proposals
AutoCAD Electrical
electrical CADAutoCAD Electrical supports electrical diagram creation and wiring documentation used in solar plant and balance-of-system design workflows.
Schematic and wire numbering automation with circuit tagging and report generation
AutoCAD Electrical stands out from general CAD tools by focusing on electrical schematic drafting with component catalogs, symbol libraries, and automated wiring workflows. For solar design tasks, it supports creating electrical one-lines, wiring diagrams, and control schematic documentation alongside the electrical portions of PV systems. The tool’s parametric blocks and annotation tools help maintain consistent labeling for panels, breakers, inverters, junction boxes, and control wiring. Its core strength remains electrical documentation rather than solar layout and placement optimization.
Pros
- Electrical schematic automation reduces manual symbol and tag work
- Strong wiring diagram workflows support consistent circuit documentation
- Parametric blocks and library-driven labeling speed PV control documentation
- DWG-native drafting integrates with existing CAD-based project files
Cons
- Limited native support for PV module layout and shading analysis
- Solar-specific outputs often require custom standards or manual setup
- Setup overhead is higher for teams without existing electrical CAD libraries
Best For
Electrical-focused solar teams documenting wiring, control logic, and panel-level schematics
QGIS
GIS analysisQGIS enables solar site analysis workflows with GIS layers for terrain, constraints, and candidate placement using spatial tools and plugins.
Geoprocessing toolbox with raster and vector analysis for spatial decision support
QGIS stands out for solar design work because it combines GIS-grade spatial data handling with robust geospatial analysis tools. It supports vector and raster layers, custom symbology, spatial joins, and geoprocessing that help translate site constraints into planning-ready maps. With plugins and geoprocessing workflows, it can support shading-aware layouts when paired with appropriate terrain and solar datasets, while still serving as an integration hub for solar design inputs and outputs.
Pros
- Flexible layering for site boundaries, terrain rasters, and solar assets
- Advanced geoprocessing tools for buffers, overlays, and zonal computations
- Plugin ecosystem enables solar and analysis workflows beyond core GIS
Cons
- Solar design automation requires significant workflow setup and data preparation
- Interactivity and templating for final layouts take extra effort
- Consistent shading and irradiance modeling depends on external datasets and plugins
Best For
Solar design teams needing GIS workflows for site screening and mapping
OpenStudio
design analysisOpenStudio provides architectural and solar design workflows with geometry and shading inputs to analyze solar performance needs.
Visual model-building workflow that ties solar inputs to analysis outputs
OpenStudio stands out by combining solar-oriented engineering workflows with a visual model-building approach. It supports building geometry, solar analysis inputs, and output reporting centered on site and system design decisions. The tool is strongest for teams that need repeatable design calculations and consistent project documentation.
Pros
- Visual workflow supports repeatable solar design calculations and reporting
- Geometry and solar inputs stay connected to outputs for traceable results
- Project outputs support clear decision-making during iterative design
Cons
- Model setup can be time-consuming for complex building and site contexts
- Workflow complexity can feel heavy for small one-off studies
- Advanced analysis customization requires familiarity with modeling conventions
Best For
Teams standardizing solar design analysis with consistent, documentable workflows
PVcase
roof designPVcase designs solar PV systems using roof measurements and engineering checks to produce layouts and bill-of-materials outputs.
Visual project workflow that keeps layout, shading inputs, and performance outputs synchronized
PVcase stands out for turning PV engineering steps into a visual, spreadsheet-like workflow around a project model. It supports module and inverter selection, shading and layout inputs, and performance estimation aligned to rooftop and ground-mount scenarios. The tool also produces design outputs suitable for client-ready documentation, using consistent assumptions across tasks.
Pros
- Structured workflow for PV layout, modeling assumptions, and exportable outputs
- Accurate shading and placement inputs for rooftop and ground-mount designs
- Consistent project modeling helps reduce errors between calculations and reports
Cons
- Interface complexity increases for advanced design customizations
- Some workflows can feel rigid for highly bespoke engineering cases
Best For
Solar design teams needing repeatable modeling, shading, and deliverable exports
Trimble SketchUp
3D modelingSketchUp supports solar shading and mounting design via 3D modeling and integration with solar analysis and export workflows.
Push-pull modeling for building roofs and shading objects quickly
Trimble SketchUp stands out for fast 3D modeling through a large library of shapes and intuitive push-pull editing. For solar design, it supports site and roof modeling plus solar-ready visualization workflows using geometry that designers can measure and export. It also integrates with Trimble tools for mapping context and supports exporting models to downstream analysis tools where solar performance calculations happen.
Pros
- Rapid roof and site modeling using push-pull geometry
- Extensive 3D component libraries speed repeatable design work
- Exports clean geometry for downstream solar analysis workflows
- Strong ecosystem for extensions and industry file interoperability
Cons
- Solar performance calculations are not native to the modeling tool
- Shading and obstruction accuracy depends heavily on manual modeling detail
- Large scenes can slow interaction without careful model organization
- Solar-specific validation tools are limited compared with dedicated design platforms
Best For
Solar designers needing quick 3D roof/site models and visualization handoffs
Conclusion
After evaluating 8 utilities power, SAM (System Advisor Model) stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
How to Choose the Right Solar Designing Software
This buyer's guide explains how to evaluate solar designing software for proposal workflows, engineering-grade modeling, and scenario-based decision making. It covers Aurora Solar, SolarEdge Design Tool, SAM, HOMER Pro, PV*SOL, Clean Energy Project Design Tools, Solargis, and Skysage. It also maps each tool to the specific design outputs teams use for permitting, handoffs, and customer-facing energy estimates.
What Is Solar Designing Software?
Solar designing software helps teams turn site and system inputs into PV layouts, performance estimates, and project documentation deliverables. It reduces manual drafting and rework by combining layout planning, shading or irradiance-aware yield calculations, and design exports for stakeholders. Aurora Solar illustrates this with a guided workflow that builds PV layouts from site setup and generates customer proposals with modeled production. SolarEdge Design Tool illustrates the hardware-aligned side by tying shading analysis and string and layout configuration to SolarEdge inverter and module workflows for consistent documentation handoffs.
Key Features to Look For
The best tools align workflow depth to the exact deliverable needed for sales, engineering, permitting, or microgrid optimization.
Guided PV layout generation with integrated production modeling
Aurora Solar provides guided PV layout and production modeling in one flow so teams can iterate designs without restarting modeling. Skysage also targets proposal-ready rooftop layout deliverables using shade-aware assumptions that feed system sizing.
Shading analysis tied to string, layout, and performance modeling
SolarEdge Design Tool connects shading inputs to string and performance modeling so inverter and string setup decisions stay consistent. Solargis and Aurora Solar both emphasize shading-aware irradiance and yield estimation so energy results reflect real site effects.
Physics-based time-series performance simulation for detailed engineering studies
SAM delivers physics-based solar PV and solar thermal performance simulation with time-series modeling and dispatch-oriented outputs. This depth supports engineering review of energy yield, losses, and operational behavior instead of relying on simplified calculator-style estimates.
Hybrid system and dispatch-aware modeling across architectures
SAM supports hybrid configurations in one workflow so solar PV and solar thermal studies share consistent assumptions. HOMER Pro focuses on microgrid architectures and uses dispatch simulation while optimizing generation, storage, and power electronics choices.
Techno-economic optimization with scenario sweeps and reliability metrics
HOMER Pro applies techno-economic search algorithms with NPC and reliability metrics to compare microgrid architectures under consistent assumptions. Clean Energy Project Design Tools complements this with scenario-based solar project comparisons in a structured design workflow.
Detailed PV yield and electrical configuration modeling with loss and inverter-string matching
PV*SOL focuses on PV yield simulation using configurable loss factors plus electrical design for strings and inverter matching. Solargis adds the solar resource and geospatial strength that supports accurate irradiation and PV yield outputs for engineering documentation workflows.
How to Choose the Right Solar Designing Software
Selection should start with the deliverable type, then match the modeling depth and workflow structure to the team’s handoff needs.
Choose the primary output: proposal visuals or engineering-grade simulation
If the main requirement is proposal speed and customer-facing energy estimates, Aurora Solar and Skysage focus on generating review-ready rooftop layouts and proposal style deliverables. If the main requirement is engineering accuracy for PV and solar thermal performance or dispatch behavior, SAM and HOMER Pro center on physics-based and dispatch-oriented simulation outputs.
Match the workflow to the hardware alignment needs
Teams standardizing on SolarEdge hardware should prioritize SolarEdge Design Tool because it builds shading and string and layout configuration around SolarEdge inverter and module compatibility. Teams that must keep designs brand-agnostic or need cross-brand flexibility often look to Aurora Solar, PV*SOL, or Solargis for broader modeling workflows.
Validate shading and irradiance modeling depth against the site complexity
For shading-sensitive rooftop or multi-obstacle environments, tools that emphasize shade-aware modeling help reduce energy estimate drift, including Solargis and Aurora Solar. For rooftop teams that must convert assumptions into client deliverables, Skysage uses shade-aware inputs tied to layout planning so assumptions stay visible in proposal artifacts.
Confirm electrical design coverage for strings and inverter matching
PV electrical configuration depth matters when design signoff depends on stringing logic and performance checks, which is why PV*SOL emphasizes inverter-string matching plus strings and inverter configuration. SolarEdge Design Tool also provides string and layout configuration steps, but best results require accurate geometry and shading inputs to keep performance modeling aligned to the configured system.
Pick scenario management for the decisions that must be compared
If multiple system architectures must be sized and compared with consistent assumptions, HOMER Pro supports scenario sweeps and sensitivity analysis with techno-economic and reliability outputs. Clean Energy Project Design Tools supports scenario-based solar project comparisons inside a structured design workflow that outputs design documentation for handoff work.
Who Needs Solar Designing Software?
Solar designing software fits teams that need reliable PV layout planning, shading or irradiance-aware yield estimates, and structured outputs for proposals, engineering review, or microgrid optimization.
Solar design teams who need fast proposal visuals with reliable modeling
Aurora Solar targets solar design teams that must produce permit-ready proposal outputs with guided PV layouts and integrated production modeling. Skysage supports consistent rooftop layout deliverables and shade-aware assumptions that convert into client-facing proposal artifacts.
Installers and EPC teams designing SolarEdge systems
SolarEdge Design Tool is built for workflows tied to SolarEdge inverter and module compatibility with shading analysis connected to string and performance modeling. The tool’s guided steps reduce omission risk in inverter and string setup steps so handoffs remain standardized for installer execution.
Solar engineers needing physics-based PV and thermal simulation
SAM provides built-in solar and hybrid performance modules with time-series energy and dispatch simulation for detailed engineering review. Its physics-based modeling and component-level inputs support evaluation of energy yield, losses, and dispatch outcomes beyond simple layout calculators.
Microgrid designers optimizing generation, storage, and dispatch strategy
HOMER Pro targets microgrid designers who need techno-economic optimization across off-grid and grid-connected configurations. It models hourly time-series behavior and produces NPC and reliability metrics while simulating dispatch across candidate architectures.
Common Mistakes to Avoid
Several pitfalls repeat across tools because workflow depth and setup requirements vary widely between proposal-focused platforms and engineering-grade simulators.
Selecting a proposal-first tool for deep engineering simulation needs
Aurora Solar and Skysage produce proposal-ready outputs from guided rooftop layout and shade-aware assumptions, which can leave gaps for engineering-grade dispatch studies. SAM and HOMER Pro provide time-series energy and dispatch simulation with detailed assumptions for physics-based and techno-economic engineering decisions.
Assuming shading inputs will not affect results
SolarEdge Design Tool depends on accurate shading and geometry inputs so shading analysis stays aligned with string and performance modeling. Solargis and Aurora Solar also emphasize shading-aware irradiance modeling, so missing site obstacles can distort PV yield estimates.
Overlooking the electrical configuration requirements for strings and inverters
PV*SOL is designed around configurable loss factors plus inverter-string matching, so skipping electrical parameter setup can undermine yield and performance checks. SolarEdge Design Tool also ties outputs to inverter and string setup steps, so incomplete system geometry and shading inputs can constrain output confidence.
Trying to force highly custom workflows without the right scenario structure
HOMER Pro can feel heavy when scenario management involves large libraries of design alternatives, so scenario definitions need disciplined constraint setup. Clean Energy Project Design Tools supports scenario comparisons in a structured workflow, but export and integration can require manual data prep when engineering processes demand highly custom outputs.
How We Selected and Ranked These Tools
we evaluated each solar designing software tool on three sub-dimensions. Features has a weight of 0.4, ease of use has a weight of 0.3, and value has a weight of 0.3. The overall rating is the weighted average computed as overall = 0.40 × features + 0.30 × ease of use + 0.30 × value. Aurora Solar separated itself through a concrete combination of guided PV layout generation and integrated production modeling that reduces layout iteration friction for sales proposal workflows, which boosted its features and ease of use outcomes in the same workflow.
Frequently Asked Questions About Solar Designing Software
Which solar design tool is best for physics-based performance modeling across PV, CSP, and hybrid systems?
SAM is built for physics-based performance modeling of PV, CSP, and hybrid plants using configurable system blocks and time-series simulations. It produces outputs for energy yield, dispatch behavior, and efficiency losses based on explicit site and design inputs.
Which tool is designed for proposal-ready PV and storage designs aligned to SolarEdge hardware?
SolarEdge Designer is workflow-guided for solar PV and storage proposal design tied to SolarEdge components. It supports system layout, shading and electrical checks, and generates outputs consistent with SolarEdge ecosystem assumptions.
Which option should be chosen for inverter and string configuration planning constrained by SolarEdge P-series design rules?
SolarEdge P-Series Designer centers system planning around SolarEdge P-series inverter configurations and constraints. It helps define module stringing and inverter sizing inputs and outputs layout guidance tailored to SolarEdge P-series pairing assumptions.
When the core deliverable is wiring diagrams and electrical one-lines, which software is the best fit?
AutoCAD Electrical focuses on electrical schematic drafting with component catalogs, symbol libraries, and automated wiring workflows. It supports electrical one-lines, wiring and control schematics, and uses parametric blocks and annotation tools for consistent labeling and reporting.
Which tool supports GIS-based site screening and map-driven constraint analysis for solar projects?
QGIS supports GIS-grade spatial data handling with vector and raster layers, symbology, spatial joins, and geoprocessing. Solar design teams can translate site constraints into planning-ready maps and use its geoprocessing toolbox for spatial decision support.
Which platform is best for repeatable, documentable solar design calculations without relying on ad-hoc modeling?
OpenStudio uses solar-oriented engineering workflows with a visual model-building approach tied to site and system inputs. It emphasizes consistent project documentation by connecting geometry and inputs to analysis outputs.
Which software keeps layout, shading inputs, and performance estimation synchronized in a visual workflow?
PVcase organizes PV engineering steps into a visual, spreadsheet-like workflow around a project model. It supports module and inverter selection, shading and layout inputs, performance estimation for rooftop and ground-mount scenarios, and deliverable-ready exports.
Which tool works best for fast 3D roof or site modeling and handoff-ready visualization for solar work?
Trimble SketchUp enables rapid 3D modeling using push-pull editing and a large shapes library. It supports solar-ready site and roof modeling for visualization and measurement, and it can export models to downstream analysis tools after context integration.
How do teams typically integrate layout modeling with performance analysis when separate tools are used?
Teams often build geometry in Trimble SketchUp or derive constraint maps in QGIS, then pass site and design inputs into SAM or PVcase for performance and shading-aware estimation. PVcase can also align layout, shading, and performance inside one workflow when the deliverables require synchronized assumptions.
Tools reviewed
Referenced in the comparison table and product reviews above.
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