Commercial Solar Design Software: C&I Buyer's Guide

Commercial solar design software needs to handle multi-array C&I rooftops, ground-mount projects, bankable yield simulation, PPA financial modelling, AutoCAD export, and a proposal stack that closes commercial deals. This guide compares the six serious options in 2026 and explains why SurgePV is the solar design software leader for C&I teams.

• SurgePV ships all three on every paid plan, plus AI design and integrated proposals.
• Book a free SurgePV demo and design a real C&I project on the call.

The 6 Commercial Solar Design Software Tools That Matter

1. SurgePV

Full commercial solar design software workflow. 8,760-hour module-level shading on every plan. PPA, loan, lease modelling. AutoCAD export. Branded proposals in 9 languages. $1,299 to $1,899 per user per year.

2. HelioScope

Browser-based C&I engineering. $99 to $300+ per user per month. No proposals. See our HelioScope pricing breakdown or the HelioScope alternative comparison.

3. Aurora Solar

US residential-leaning. C&I capabilities at upper tier. $159 to $259 per user per month. Full detail in our Aurora Solar pricing guide and the Aurora vs HelioScope head-to-head.

4. PVcase

Utility-scale terrain optimisation. Limited C&I rooftop. Enterprise-priced. See the PVcase alternative comparison or our utility-scale solar design software guide.

5. OpenSolar

Free tier works for small C&I rooftops. Engineering depth limited for larger projects. Our OpenSolar alternative comparison ranks six tools if you outgrow it.

6. PVsyst

Desktop bankable simulation for lender-mandated reports. No proposal stack. See PVsyst pricing or the PVsyst alternative comparison.

Commercial Solar Design at a Glance

What SurgePV Bundles for C&I

• Multi-array, multi-tilt, multi-orientation layouts
• 8,760-hour module-level solar shading analysis
• Inter-row shading on ground-mount
• Bankable yield reports with P50, P75, P90
• PPA, loan, lease financial structures
• DXF/DWG export for AutoCAD handoff
• Auto-generated single-line diagrams with NEC, IEC labels
• Auto-BOQ for procurement
• Branded solar proposals with e-signature in 9 languages
• QuickEstimate pairs as the sister CRM for solar sales

C&I Cost Comparison at 5 Seats

Where C&I Projects Spill Outside the Rooftop

Most C&I pipelines eventually include something that is not a flat roof. The two that come up most often are parking structures and batteries.

Parking canopies are their own design problem: fixed tilt set by vehicle clearance rather than roof pitch, a column grid aligned to bays that constrains module placement, and inter-row shading between canopy runs. Our solar carport design software guide covers the workflow. Where the site adds a battery for peak shaving against demand charges, solar plus storage design software explains why sizing the array and the battery together produces a smaller, cheaper battery than sizing them in sequence.

On the engineering side, the deliverables C&I clients and AHJs ask for are covered in photovoltaic design software for the full engineer’s toolchain and solar SLD software for the electrical drawing set.

Who Should Choose Each Tool

• Choose SurgePV for full C&I scope plus integrated proposals at flat per-seat cost.
• Choose HelioScope for engineering-only C&I where someone else handles sales.
• Choose Aurora upper tier for US-residential teams adding occasional C&I.
• Choose PVcase for utility-scale terrain optimisation.
• Choose OpenSolar for small C&I at the entry price point.
• Choose PVsyst for lender-mandated bankable reports.

Contact Qbits with the exact model, site inputs and documents relevant to the request. Confirm the responsible party, deliverable, fees and response time after submission.