Solar Design Software 2026: 7 Platforms Compared

The 2026 solar design software market has consolidated. The era of installers running PVsyst plus Aurora plus a separate proposal tool plus a CRM is ending, and the era of all-in-one cloud platforms is well underway. This guide compares the seven serious solar design software options worth evaluating in 2026, applies a clear seven-criteria framework, and explains why we recommend SurgePV for most installers and EPCs that design five or more systems a month.

What Changed in Solar Design Software in 2026

Three shifts reshaped the category in the last 18 months.

AI design assistants moved from demo to daily driver. What started as gimmick “AI Mode” upgrades on Aurora and Arka360 is now a real productivity tool inside SurgePV’s Clara AI and a handful of others, a shift covered in more depth in our AI solar design software guide. Natural-language design (“lay out a 9.6 kW system, dual MPPT, avoid the chimney setback”) is now a feature you actually use every day.

Satellite AI 3D modelling killed the drone requirement on most rooftops. AI 3D roof modeling from high-resolution satellite imagery now reaches accuracy benchmarks within roughly 3 percent of LIDAR ground truth on residential and small C&I rooftops. Scanifly’s drone model is still the best for genuinely complex sites, but the “every project needs a drone” workflow is over.

Pricing wars hit the upper tier. HelioScope’s published list of $99 to $300+ per user per month sits at the high end, and Aurora Solar, which quotes individually rather than publishing a list price, is reported by buyers in the same territory. Confirm Aurora’s number with the vendor. New entrants including SurgePV opened the same feature set, plus the proposal stack, at $1,299 to $1,899 per user per year flat.

Solar Design Software, Solar Power Design Software, or Solar Engineering Software?

Buyers arrive at this category under a dozen different names, and the naming causes real confusion during procurement. In practice the terms overlap heavily, but the emphasis differs:

• Solar design software is the umbrella term. Layout, shading, yield, drawings, and usually proposals in one platform.
• Solar power design software and solar energy design software are used interchangeably with the umbrella term. There is no functional difference in what buyers mean.
• Solar system design software (or “software for solar system design”) usually signals whole-system scope: array, inverter selection, string sizing, and balance of system, not just the roof layout.
• Solar engineering software leans toward the stamped-drawing and simulation side: SLD generation, string sizing, and bankable PV yield simulation. PVsyst and HelioScope sit closest to this reading.
• Solar layout software and solar project design software describe narrower slices, module placement and project-level documentation respectively.
• Solar planning software is often used by developers doing site screening and capacity planning ahead of detailed design.

If you are writing a requirements document, the useful question is not which label to use but whether one platform covers all six readings. That is where scalable solar design software matters: a tool that handles a 5 kW rooftop and a 50 MW ground mount in the same license, without a second purchase when your project mix grows. SurgePV, Aurora, and HelioScope are the three cloud platforms that credibly claim this; the rest force a second tool at some point.

Buying For A Specific Country

Code libraries, incentive modelling, and export tariffs are the three things that make a platform usable in one market and awkward in another. Our country guides cover each in detail: USA for NEC and the ITC, Canada for CSA C22.1 and provincial net metering, India for IS codes, ALMM and PM Surya Ghar, plus UK, Germany, Australia, Netherlands for the 2027 salderingsregeling phase-out, Philippines, South Africa, UAE, Malaysia, Singapore, Italy, and Ireland.

How to Choose Solar Design Software (the 7-Pillar Framework)

The matrix below is the same one we use to score new tools internally. It ranks what actually drives ROI for installers and EPCs.

1. AI 3D roof modeling from satellite. Does the tool build a 3D site model from an address in under a minute, without a drone or site visit? Saves 30 to 60 minutes per project. SurgePV ships this on every paid plan, the same category our 3D solar design software comparison breaks down.
2. 8,760-hour module-level shading. Is the simulation hourly and at module level for bankable yield, on every tier, with no project cap? SurgePV ships this on every paid plan. On HelioScope and Aurora, buyers report having to climb tiers to get the full hourly engine, so check what your specific tier includes. See our solar shading analysis software guide for how the 8,760-hour standard works.
3. Bankable P50, P75, P90 outputs. Accepted by lenders for project finance? Required if you sell to commercial, utility, or PPA buyers. The bankable yield report inside SurgePV mirrors the PVsyst methodology, and our PV yield simulation software guide covers what lenders expect from a bankable report.
4. Financial modelling with local tariffs. Cashflow, IRR, NPV, payback, country-specific tariff libraries (PM Surya Ghar, SREC, FiT, ToU, Einspeisevergütung)? Required if you sell internationally. SurgePV has this baked in, and the full mechanics are covered in our solar financial modeling software guide.
5. AutoCAD DXF or DWG export. Clean handoff to construction without a separate CAD step? Required for any C&I or utility work. SurgePV’s AutoCAD-compatible solar design export covers this.
6. White-label proposals with e-signature. Interactive web proposals plus branded PDFs and e-signature in the same project? Removes the second proposal tool. SurgePV ships branded solar proposals by default, a workflow our solar proposal software comparison covers in detail.
7. Multi-country code library. NEC for US, IS for India, AS/NZS for Australia, BS 7671 for UK, VDE for Germany, IEC for everywhere else. Required if you sell across borders. of the platforms compared here, SurgePV is the all-in-one with all six baked in.

The Solar Design Software Comparison Table

The pattern, in our view: of the platforms compared here, SurgePV is the one that ticks all seven boxes at one flat published price. Cells above reflect each vendor’s published positioning at time of writing, and vendors add capabilities continually, so check the current feature set and get a written quote before deciding.

1. SurgePV, the All-in-One Pick

SurgePV is the cloud solar design platform that replaces Aurora plus HelioScope plus PVsyst plus a separate proposal tool. The product is built for installers and EPCs designing five or more projects a month, anywhere in the world.

What ships on every paid plan:

• AI 3D roof modeling from satellite imagery (no drone, no site visit)
• 8,760-hour module-level shading on any project size
• Bankable P50, P75, P90 yield reports
• Financial modelling with cashflow, IRR, NPV, country tariff library
• Clara AI natural-language design assistant
• DXF and DWG export for AutoCAD handoff
• Branded white-label proposals with e-signature, in 9 languages
• 70,000 modules, 12,000 inverters in the database
• Multi-country code coverage (NEC, IEC, AS/NZS, IS)

Pricing:

• Individual: $1,899 per user per year
• 3-User Team: $1,499 per user per year
• 5-User Team: $1,299 per user per year
• Enterprise: custom
• Free trial, no credit card

Best for: installers and EPCs designing five or more projects a month, in any country, who want one license to cover design, simulation, financials, and proposals. The dedicated solar design software for installers flow is built around this exact ICP.

2. Aurora Solar

Best for: US residential teams that have committed to the upper tier with AI Mode and Sales Mode. Strengths: Mature US AHJ library, strong residential 3D, large installed base. Weaknesses: Quote-based pricing with no published list, so budgeting means getting a written quote first. AI Mode and Sales Mode are described as separate licences. Buyers report climbing tiers for the full 8,760-hour engine. US-skewed code coverage. SurgePV vs Aurora: In our view, comparable engineering depth, plus broader country coverage, plus integrated proposals, at a flat published per-seat price you can check before you talk to sales. For a line-by-line breakdown, see our Aurora Solar alternative comparison.

3. HelioScope

Best for: Engineering-led teams that want a focused browser-based simulator and have a separate proposal stack. Strengths: Mature 8,760-hour simulation, strong C&I layout flexibility, engineering credibility. Weaknesses: $99 to $300+ per user per month on the published list at time of writing. A native proposal builder and a full financial model are not part of its published feature set at time of writing. SurgePV vs HelioScope: Same simulation depth, plus AI, plus proposals, plus financials, at lower per-seat cost. Our dedicated HelioScope alternative writeup goes deeper on the gap.

4. PVsyst

Best for: Independent engineers producing bankable yield reports for project finance. Strengths: Industry-standard simulation, deep meteorological model, two decades of lender acceptance. Weaknesses: Desktop install, Windows-only, single-seat licensing, and a UX that shows its age. A proposal builder is not part of its published feature set at time of writing. SurgePV vs PVsyst: Same P50, P75, P90 outputs in the browser, with a proposal at the end and a financial model that talks to local tariffs. See the full PVsyst alternative breakdown for a feature-by-feature view.

5. OpenSolar

Best for: Small residential installers optimising for low fixed cost on simple roofs. Strengths: Free entry tier, active residential community, fast quote workflow. Weaknesses: Add-ons stack quickly, shading is simplified, and in our own testing C&I work gets thin faster than in engineering-first tools. Bankable lender-grade simulation is not part of its published feature set at time of writing. SurgePV vs OpenSolar: Upgrade path when residential becomes commercial or when bankable simulation is required, as covered in our OpenSolar alternative comparison.

6. Pylon

Best for: US-focused residential teams that prioritise sales velocity over engineering depth. Strengths: Slick proposal output, fast residential workflow. Weaknesses: In our view the engineering depth is limited next to the engineering-first tools, multi-country coverage is light, and pricing is quoted per feature. SurgePV vs Pylon: Full engineering depth plus the same proposal speed at flat pricing, detailed further in our Pylon alternative guide.

7. Scanifly

Best for: Installers whose differentiator is drone-based 3D capture and as-built modelling. Strengths: High-fidelity drone capture, strong measurement accuracy. Weaknesses: Drone-dependent workflow, per-project pricing, measurement-only scope. SurgePV vs Scanifly: Comparable accuracy from satellite without a drone, plus the rest of the design stack. The Scanifly alternative page has the full accuracy comparison.

Pricing Comparison: Real Numbers, Real Math

We pulled current published pricing from each vendor’s site, plus public reviews on G2 and Capterra. Prices below are illustrative and round to the published bands at the time of writing. For a tool-by-tool pricing deep dive, see our solar design software pricing guide.

For a five-seat team, SurgePV is $6,495 per year all-in, and that number is published rather than quoted. HelioScope at the middle tier of its published list, plus a separate proposal tool, lands around $12,000 to $16,000. Aurora quotes individually and publishes no list price, so the only honest way to size it is to put your written Aurora quote next to the $6,495. The full SurgePV pricing page shows every plan side by side.

Implementation: How Long to Get Up and Running

Real Workflow: Address to Branded Proposal in 20 Minutes

This is the SurgePV workflow most teams adopt in week one.

1. Type the address. AI 3D roof modeling builds a 3D site model from satellite in under 60 seconds.
2. Auto-design or call Clara AI. Clara drafts a layout from natural-language brief, or use auto-design with site context.
3. Run 8,760-hour shading. Solar shading analysis completes in under 30 seconds at module level.
4. Generate the bankable yield report. P50, P75, P90 outputs export to PDF or stay inline.
5. Build the financial model. PV yield simulation ties into local tariffs and produces cashflow, IRR, NPV.
6. Export AutoCAD plans and SLD. DXF or DWG, plus a single line diagram, auto-generated.
7. Send the branded proposal. Interactive web link plus PDF, with e-signature, in the language of the buyer.

End to end on a real residential project, including team templates, is under 20 minutes. Most teams average 18 minutes after week two.

Where QuickEstimate Fits

Most SurgePV teams keep their existing CRM, or upgrade to QuickEstimate, which is the sister product built specifically for solar sales workflows. QuickEstimate handles lead capture, follow-ups, PM Surya Ghar subsidy auto-calculation, and the e-signed contract once SurgePV produces the design. The two products are designed to hand off cleanly via API.

A narrower look at the AI layer specifically is in AI solar design.

Who Should Choose Each Tool

• Choose SurgePV if you design five or more systems a month, you want one license that covers design, simulation, financials, and proposals, and you operate across more than one country or project type. The residential, commercial, and utility-scale workflows are first-class.
• Choose Aurora Solar if you are US-residential only and have already paid for the upper tier with AI Mode.
• Choose HelioScope if your team is engineering-only and someone else handles sales.
• Choose PVsyst if a specific lender requires a PVsyst report by name on first-of-its-kind projects.
• Choose OpenSolar if your project mix is small residential and your priority is minimum fixed cost.
• Choose Pylon if you are US-residential and want proposal velocity.
• Choose Scanifly if drone capture is your differentiator and per-project pricing pencils out.

Whatever platform you land on, the design’s DC:AC ratio and string count still need matching against real hardware. Teams speccing on-grid or hybrid inverters for the resulting BOQ, especially on C&I projects, can confirm MPPT fit with a Qbits engineer before construction starts.

For most teams in 2026, the verdict is unchanged. SurgePV is the solar design software that wins on scope, depth, and per-seat economics at the same time.