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Environment EnergyTop 9 Best Solar Pv Design Software of 2026
Explore a roundup of solar pv design software tools for PV engineers, comparing design workflows, outputs, and fit for project needs.
How we ranked these tools
Vendors set the topic, but our editors set the inclusion criteria and the evaluation framework before research starts.
Search agents gather the source set and the review record, including transcriptions of video reviews and podcasts.
Framework: Features 40% · Ease 30% · Value 30%
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PVsyst is the best choice for engineering teams producing document-ready PV studies because it delivers physics-driven yield and loss modeling with detailed system-level performance outputs, while Heliodesk suits installer-focused design teams since its shading-aware workflow helps keep roof layouts and proposal outputs consistent.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
PVsyst
Bankable PV yield and loss modeling with detailed system-level performance outputs
Best for: Engineering teams producing detailed, document-ready PV design studies
Heliodesk
Editor pickShading-aware design workflow that improves accuracy of PV layouts and proposal outputs
Best for: Solar design teams needing consistent, shading-aware proposal outputs
Aurora Solar
Editor pickInstant 3D roof modeling with layout placement and automated proposal visuals
Best for: Solar design teams needing fast 3D design and proposal generation
Comparison Table
PVsyst
engineering simulationPVsyst performs detailed solar PV system design, simulation, and performance analysis for grid-tied and off-grid projects.
Bankable PV yield and loss modeling with detailed system-level performance outputs
PVsyst stands out for its physics-based simulation workflow that produces bankable solar PV system design studies. It supports PV module and inverter modeling, PV array configuration, and detailed energy yield calculations using site and meteorological inputs.
The software includes shading, loss modeling, and performance ratios that help translate design choices into expected production and system behavior. PVsyst also generates project documentation and outputs suitable for engineering review and internal approvals.
- +Physics-driven energy yield modeling with detailed loss breakdown
- +Strong PV design documentation for engineering review workflows
- +Comprehensive shading and array configuration modeling options
- –Configuration depth increases setup time for small projects
- –Workflow can feel complex for users without PV modeling experience
- –Licensing costs can be heavy for single-person usage
Best for: Engineering teams producing detailed, document-ready PV design studies
Heliodesk
installer designHeliodesk designs solar PV systems with 3D roof modeling, production estimation, and installer-oriented proposal generation.
Shading-aware design workflow that improves accuracy of PV layouts and proposal outputs
Heliodesk stands out for turning solar design into a guided, field-to-model workflow that focuses on site context and client-ready outputs. It supports PV layout and shading-aware design so proposals reflect real-world constraints rather than generic defaults.
Core capabilities include module and inverter configuration, electrical sizing inputs, and exportable deliverables for handoff to installers or proposal generation. Its strongest fit is teams that want consistent design outputs across projects with less manual rework.
- +Guided solar design workflow with site context inputs
- +PV layout and configuration tools for repeatable project setups
- +Shading-aware design inputs to improve proposal realism
- +Exports designed for installer handoff and client deliverables
- –Setup requires careful input mapping for accurate outputs
- –Less flexible than top tools for custom engineering workflows
- –Collaboration and review tooling is not as robust as enterprise CAD
Best for: Solar design teams needing consistent, shading-aware proposal outputs
Aurora Solar
all-in-oneAurora Solar generates PV layouts and production estimates using aerial imagery, 3D modeling, and design-to-proposal workflows.
Instant 3D roof modeling with layout placement and automated proposal visuals
Aurora Solar stands out with a workflow built for utility-grade solar PV design and stakeholder-ready proposal output. It combines 3D modeling, site and roof modeling, and production estimates with proposal tools that streamline handoff to sales teams. The platform is designed to support repeated design iterations, enabling faster refinement of system layout and performance reporting.
- +High-fidelity 3D system layout for roof and site design
- +Proposal-ready outputs help sales teams present consistent designs
- +Fast iteration improves layout and performance refinement cycles
- +Strong estimation workflow supports production and reporting needs
- –More powerful than simple one-off residential layouts require
- –Advanced workflows can require training for consistent results
- –Collaboration and role controls can feel complex for small teams
Best for: Solar design teams needing fast 3D design and proposal generation
OpenSolar
sales designOpenSolar designs solar PV systems with 3D roof modeling, shading insights, and automated proposal outputs for sales teams.
Model-driven proposal reporting that exports consistent design, production, and financial outputs
OpenSolar stands out for turning solar PV designs into a guided, configurable workflow that supports both quick lead estimates and more complete engineering deliverables. It provides sizing and system modeling, generation and financial outputs, and proposal-ready reports built from the model inputs.
- +Guided solar design workflow reduces manual rework between sizing and proposals
- +Model-driven reporting keeps estimates consistent across calculations and outputs
- +Project templates support repeatable sales and engineering workflows
- +Built-in generation and financial outputs support end-to-end proposal creation
- –Setup complexity can be high for teams with nonstandard design processes
- –Advanced engineering customization is less direct than dedicated engineering suites
- –Workflow speed depends on data readiness and template completeness
Best for: Solar installers and design teams standardizing proposals from repeatable PV models
PV*SOL
engineering simulationPV*SOL from Valentin Software models PV systems and produces energy yield, sizing, and component selection results.
High-resolution shading and detailed system modeling for realistic PV energy yield calculations
PV*SOL stands out for its engineering-focused solar simulation workflow built around PV system design and yield calculation. It supports detailed sizing of modules and inverters, shading handling, and performance analysis over time for grid-connected and off-grid configurations.
- +Strong PV yield modeling for system sizing and energy assessment
- +Shading and layout inputs support more realistic production estimates
- +Outputs are structured for design iteration and stakeholder reporting
- –Setup and input configuration take time compared with simpler estimators
- –Advanced workflows can feel heavy for small rooftop projects
- –Value drops when you only need quick feasibility checks
Best for: Solar design engineers producing detailed PV yield and layout studies
SketchUp with Solar plugins
3d modelingSketchUp with solar and shading plugins enables custom PV layout modeling and visualization for design and planning.
Plugin-driven panel layout visualization on modeled roof surfaces
SketchUp is a 3D modeling tool that becomes solar PV design software by extending it with solar-focused plugins. You can model roof geometry, place panel layouts, and generate visual proposals using SketchUp’s native modeling workflow.
- +Fast 3D roof modeling with intuitive push-pull and inference tools
- +Solar plugins enable panel placement visuals and proposal-ready renders
- +Great for client communication using accurate spatial context
- –Solar analysis depth depends on which plugin and data inputs you use
- –Toolchain fragmentation can cause inconsistent outputs across projects
- –Limited native compliance and permitting workflows for PV design
Best for: Residential solar teams needing 3D visualization and client-ready layouts
SolarBuilderTools
design calculatorsSolarBuilderTools provides solar PV design calculations and bill of materials generation for commercial and residential layouts.
BOM-focused PV design calculators that generate quote-ready bill of materials
SolarBuilderTools focuses on solar PV design workflow automation with calculator-driven sizing and project outputs. The tool emphasizes component-level bill of materials support and design documentation exports for client-facing deliverables.
- +Calculator-driven PV sizing reduces manual spreadsheet steps
- +Bill of materials support speeds up quote preparation
- +Exportable design outputs help standardize client deliverables
- –Customization for nonstandard engineering workflows is limited
- –Advanced shading, layout optimization, and constraint handling are not its focus
- –Collaboration and project management features appear basic
Best for: Residential and small commercial PV designers needing fast estimations and exports
HelioScope
roof designHelioScope creates optimized PV layouts and shading-aware energy yields to support design decisions and proposals.
Shading-aware system design that updates energy yield as you change roof layout.
HelioScope stands out for turning rooftop solar design into a rapid, geometry-driven workflow that emphasizes system sizing and layout visuals. It provides module and string planning, shading and solar access modeling, and production estimates using configurable system assumptions. The workflow centers on creating proposals from measured roof parameters and iterating quickly on layout and electrical configuration choices.
- +Fast roof-to-layout workflow with design iteration built into the process
- +Shading modeling supports decision making for module placement on complex roofs
- +Production estimation connects layout choices to expected energy yield
- –Design quality depends heavily on accurate roof measurements and inputs
- –Advanced electrical configuration depth can feel limited versus dedicated engineering tools
- –Proposal outputs require extra work to match highly customized sales deliverables
Best for: Solar design teams needing quick shading-aware layouts and proposal-ready estimates
SAM (System Advisor Model)
simulationSAM from NREL simulates solar PV performance with component-level models and detailed project-level configuration.
PV energy yield modeling paired with financial cashflow analysis in one workflow
SAM from the National Renewable Energy Laboratory is distinct because it targets rigorous energy system modeling instead of only simplified PV sizing. It includes PV performance and financial analysis modules that can simulate system energy yield using detailed input assumptions. The tool supports multiple project configurations and cashflow outputs for techno-economic evaluation alongside energy results.
- +PV system energy modeling with detailed inputs and scenario runs
- +Integrated techno-economic outputs for cashflow and project evaluation
- +Multiple configuration support for feasibility and sensitivity studies
- +Science-backed methodology from NREL for defensible performance estimates
- –Interface and workflows are complex for straightforward PV design
- –Model setup requires careful data preparation and assumptions
- –Results can be time-consuming to interpret without modeling expertise
Best for: Engineering teams performing PV yield modeling and financial feasibility studies
Conclusion
After evaluating 9 solar pv design software, PVsyst 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 Pv Design Software
This buyer's guide covers how to select Solar PV design software for roof and ground layout, shading-aware energy estimation, and proposal-ready deliverables. It compares tools including Aurora Solar, OpenSolar, PVsyst, SAM from NREL, HelioScope, Heliodesk, SolarBuilderTools, PV*SOL, Solargraf, and SketchUp with Solar plugins. Use this guide to match workflow depth to your team needs and to avoid common design and output mismatches.
What Is Solar Pv Design Software?
Solar PV design software creates PV system layouts and translates geometry plus assumptions into energy yield, losses, and documentation outputs. It solves the workflow gap between visual placement work and engineering-quality performance estimates that support internal approvals and customer-facing proposals. Tools like Aurora Solar and HelioScope focus on rapid roof-to-layout design with proposal-ready visuals. Engineering-focused platforms like PVsyst and SAM from NREL run deeper physics-based or component-level energy modeling with detailed loss, shading, and financial outputs.
Key Features to Look For
The right feature set determines whether your outputs stay consistent from design iteration to stakeholder-ready reporting.
Instant 3D roof modeling with layout placement and automated proposal visuals
Aurora Solar excels with instant 3D roof modeling that places layouts and generates automated proposal visuals, which reduces iteration time during sales-facing design cycles. SketchUp with Solar plugins also supports fast 3D roof modeling and panel placement visuals, but analysis depth depends on the plugin and data you use.
Model-driven proposal reporting that exports consistent design, production, and financial outputs
OpenSolar is built around a single project model that drives guided design, generation, financial outputs, and proposal-ready reports. This model-driven approach reduces manual rework between sizing results and the proposal package.
Physics-based PV yield and loss modeling with detailed system-level performance outputs
PVsyst provides physics-based energy yield modeling with a detailed loss breakdown, shading modeling, and performance ratios. PV*SOL similarly emphasizes realistic shading and layout inputs with high-resolution modeling that supports engineering-grade yield calculations.
Component-level energy modeling paired with cashflow analysis for techno-economic evaluation
SAM from NREL pairs rigorous PV energy yield modeling with financial cashflow outputs in one workflow. This is the strongest fit when your design process needs both energy performance and techno-economic scenario results rather than energy-only estimates.
Shading-aware design that updates energy yield as you change layout
HelioScope updates energy yield based on shading-aware layout changes, which helps you make placement decisions using production impacts. Heliodesk also uses shading-aware inputs so proposals reflect real-world constraints instead of generic assumptions.
BOM-focused design outputs for fast quoting and standardized client deliverables
SolarBuilderTools focuses on calculator-driven PV sizing that generates quote-ready bill of materials and exportable design documentation. Solargraf also targets proposal workflows by packaging layout and calculations for client signoff, which supports faster scoping for common roof scenarios.
How to Choose the Right Solar Pv Design Software
Pick the tool that matches your required workflow depth, from proposal speed to physics-based bankable studies.
Define your primary output: proposal visuals, engineering study, or both
If your daily work is sales-facing design iteration, choose Aurora Solar for instant 3D roof modeling that outputs automated proposal visuals. If you need end-to-end consistency from design model to proposal package, choose OpenSolar because it keeps reporting tied to model inputs including generation and financial outputs.
Match your energy modeling depth to your approval needs
If you need physics-driven bankable studies with detailed loss breakdown and shading modeling, choose PVsyst for comprehensive energy yield and documentation outputs. If you need rigorous energy modeling with techno-economic evaluation in the same workflow, choose SAM from NREL to pair PV energy yield with cashflow scenario runs.
Validate shading and roof geometry workflow before scaling production
If your roof constraints change often, choose HelioScope because it emphasizes shading-aware system design that updates energy yield as layout changes. If your team must keep proposals realistic with site context, choose Heliodesk because it uses shading-aware design inputs and exports deliverables for installer handoff.
Check engineering customization requirements and expected setup burden
If you need deep PV modeling control and detailed shading and constraint handling, choose PV*SOL because it emphasizes engineering-focused system modeling and report-ready outputs. If you prefer faster, template-style calculations with less custom engineering depth, SolarBuilderTools is designed around calculator-driven sizing and bill of materials generation.
Ensure collaboration and iteration fit your team size and workflow
If your team relies on repeatable design sessions and standardized proposals, choose OpenSolar for project templates and collaborative saved sessions. If you operate with fewer stakeholders and want strong visualization for client communication, choose SketchUp with Solar plugins because it provides panel layout visualization on modeled roof surfaces but depends on plugin capabilities for analysis.
Who Needs Solar Pv Design Software?
Solar PV design software fits teams that must turn roof or site measurements into consistent layout, performance estimates, and proposal or engineering documentation.
Solar design teams that need fast 3D layouts and proposal generation
Aurora Solar fits this audience because it generates PV layouts and production estimates using instant 3D roof modeling and automated proposal visuals. HelioScope also fits because it runs a rapid geometry-driven workflow with shading-aware energy yields that update as you change the roof layout.
Installers and design teams that standardize proposals from repeatable PV models
OpenSolar is built for model-driven proposal reporting with consistent exports that include design, production, and financial outputs. Heliodesk also supports consistent shading-aware proposal outputs and installer-oriented deliverables with less manual rework.
Engineering teams producing detailed, document-ready PV design studies
PVsyst is the best fit for engineering teams that need physics-based energy yield modeling with detailed loss breakdown and project documentation suitable for engineering review. SAM from NREL also targets engineering needs by pairing energy yield modeling with financial cashflow outputs for feasibility and sensitivity studies.
Design engineers or teams that require high-resolution shading and detailed system modeling
PV*SOL fits teams that want tool-level calculation control with high-resolution shading and detailed system modeling for realistic PV energy yield calculations. PV*SOL also produces structured outputs designed for iterative edits and stakeholder reporting.
Common Mistakes to Avoid
These pitfalls show up when teams buy software that does not match their modeling depth, workflow style, or data readiness requirements.
Choosing a fast layout tool when your process needs bankable loss modeling and engineering documentation
Avoid using visualization-first tools like SketchUp with Solar plugins as your only engineering-grade workflow when you need detailed loss breakdown and shading performance ratios. Use PVsyst for physics-driven energy yield and loss modeling and use SAM from NREL when you also need cashflow scenario outputs.
Breaking consistency between design inputs and proposal outputs
Avoid exporting proposal text and numbers from separate calculators that can drift from the design model. OpenSolar is designed to keep proposal-ready reports tied to a single model that feeds generation and financial outputs.
Underestimating the effort required to supply accurate roof measurements for shading-aware accuracy
Avoid treating shading-aware workflows as plug-and-play when accurate geometry inputs drive output quality. HelioScope depends heavily on accurate roof measurements and inputs, and Heliodesk relies on careful input mapping for accurate outputs.
Selecting a highly configurable engineering platform when your team needs fast template-based estimating
Avoid buying PV*SOL or PVsyst if your internal approval process only requires quick feasibility checks and fast bill of materials for quoting. SolarBuilderTools focuses on calculator-driven PV sizing and bill of materials generation, and Solargraf targets proposal-ready design reports for client signoff using typical roof scenarios.
How We Selected and Ranked These Tools
We evaluated Aurora Solar, OpenSolar, PVsyst, SAM from NREL, HelioScope, Heliodesk, SolarBuilderTools, PV*SOL, Solargraf, and SketchUp with Solar plugins across overall capability, feature strength, ease of use, and value for the intended workflow. We separated Aurora Solar from lower-ranked tools by its combination of instant 3D roof modeling with layout placement and automated proposal visuals that support repeated design iterations. We also weighted feature alignment to the tool purpose, which is why PVsyst and SAM from NREL rank higher for detailed engineering-grade energy yield and documentation needs compared to tools focused on faster proposal workflows.
Frequently Asked Questions About Solar Pv Design Software
Which solar PV design tool is best for creating proposal-ready visuals without rebuilding the model each revision?
What tool should I use when I need bankable, physics-based yield modeling with detailed loss and shading assumptions?
Which software supports techno-economic analysis by pairing energy yield with cashflow results in a single workflow?
I need quick rooftop layouts that account for shading and solar access. Which tool is fastest for that workflow?
Which option is best if my team wants standardized proposal packages from repeatable design sessions?
What tool is most suitable for calculator-style PV sizing and bill of materials outputs for residential or small commercial projects?
I want to control system-level calculation details like module and inverter configuration and export design-review outputs. Which tools fit?
Which software is a good choice when I need client-ready deliverables built from real roof measurements and fast iterations, not deep engineering grid studies?
Can I use general 3D modeling software for solar PV design, and what are the limitations compared with dedicated PV engineering tools?
What integration or export workflow should I expect when handing results to installation or sales teams?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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