Best Control Panel Design Software in 2026 (Compared for Engineers)
The best control panel design software for 2026 — EPLAN, AutoCAD Electrical, Zuken E3, Siemens, SolidWorks Electrical and free browser-based options, compared.
The Best Control Panel Design Software for 2026
Picking the right control panel design software is not a one-size-fits-all decision. A five-person panel shop quoting custom machinery has different needs from a Tier 1 automotive OEM running a global engineering team. The tools that follow cover the full spectrum — from enterprise electrical CAD seats with automated BOM generation and full PLC I/O integration, to a free browser-based option you can open in thirty seconds to sketch a schematic before a customer call.
This guide cuts through vendor marketing and gives you the practical comparison a controls or panel-build engineer actually needs: what each tool does well, where it falls short, and which scenarios it fits.
Quick Comparison Table
| Software | Best For | Platform | Free Option? | PLC / Panel Features |
|---|---|---|---|---|
| EPLAN Electric P8 | Large OEMs, multi-discipline teams | Desktop (Windows) | No (trial only) | Full PLC I/O, macros, BOM, wire numbering |
| AutoCAD Electrical | AutoCAD users, mid-size shops | Desktop (Windows/Mac) | No (trial/edu) | PLC I/O wizards, panel layout, cross-ref |
| Zuken E3.series | Harness + panel in one project | Desktop (Windows) | No | Multi-board, harness, cabinet layout |
| Siemens Electrical Designer / COMOS | Siemens-heavy plants, process | Desktop (Windows) | No | TIA integration, P&ID to E-CAD |
| SolidWorks Electrical | Mechanical + electrical co-design | Desktop (Windows) | No (trial) | 3D panel layout, BOM, PLC symbols |
| SEE Electrical | Mid-market, quick ramp | Desktop (Windows) | Free Basic tier | Symbols, cross-ref, panel layouts |
| nVent EPLAN / iCAD | Enclosure-centric design | Desktop (Windows) | No | Nvent catalog, layout-first |
| circuitdiagrammaker.app | Fast schematic / wiring diagram in browser | Browser (any OS) | Yes — fully free | Schematics, wiring diagrams, no install |
What Control Panel Design Software Actually Does
Control panel design software is the category of electrical CAD (E-CAD) tools engineers use to create the documentation package that defines a panel: single-line diagrams, schematic drawings, wiring diagrams, panel layout drawings, terminal schedules, BOM/parts lists, and wire/cable lists.
Unlike generic drawing tools, purpose-built E-CAD software understands electrical relationships. When you connect a coil to a contact, the tool tracks the cross-reference automatically. Change a wire number and every occurrence updates. Add a component from the built-in catalog and the BOM populates without manual entry.
For the controls engineer specifically, panel design software also needs to handle PLC documentation: importing I/O lists, generating PLC wiring sheets from an address database, and producing the cable/termination drawings that the panel assembler and field commissioning team will use.
A well-executed panel design package includes:
- Schematic drawings — power, control, and safety circuits
- Panel layout / enclosure drawings — physical placement of DIN rail, components, cable trays
- Terminal strip diagrams — terminal schedules with wire IDs and destinations
- Cable and wire lists — exportable for harness manufacture or commissioning
- Bill of materials — tied live to placed components
- PLC I/O drawings — auto-generated from an I/O address table
For a deeper look at the physical design workflow that this documentation supports, see our guide on electrical control panel design.
How to Choose Control Panel Design Software
Before evaluating tools, answer these five questions — they will eliminate half the list immediately.
1. Team size and collaboration model. A solo engineer can work in almost anything. A team of twelve across two sites needs proper revision management, concurrent access, and a shared symbol/component library.
2. Downstream integration. Do you need PLC software integration (importing I/O lists from TIA Portal, Studio 5000, or Unity Pro)? Do you need ERP/PDM export? Does your mechanical team work in SolidWorks or Inventor?
3. Standards compliance. Are you building panels to UL 508A, IEC 61439, or both? Some tools have built-in compliance checking; most do not.
4. Catalog depth. Large tools ship with manufacturer-specific component catalogs (Schneider, Siemens, Allen-Bradley, Phoenix Contact). Smaller tools may require you to build or import your own.
5. Budget and licensing model. Enterprise E-CAD licenses run from roughly $3,000 to $10,000+ per seat per year depending on modules, with pricing not always published publicly. If budget is the primary constraint, the free and low-cost options at the bottom of this list become the starting point, not the fallback.
The Best Control Panel Design Software Reviewed
EPLAN Electric P8
EPLAN Electric P8 is the reference standard for industrial-grade electrical engineering documentation. It originated in Germany and is widely used across European automotive, machine building, and process industries — and has significant penetration in North American OEM environments.
P8's core strength is its database-driven project model. Every object — wire, component, terminal — lives in a relational project database, not just as a drawing element. This means cross-references are always correct, BOM exports are always in sync, and global project changes (renaming a device tag, changing a cable cross-section) propagate everywhere automatically.
PLC integration is a genuine differentiator. P8 can import PLC I/O address lists from major platforms and auto-generate wiring sheets — a massive time saving on any project with more than a handful of I/O points.
Where it falls short: Steep learning curve. Licensing cost is enterprise-level — EPLAN publishes pricing per quote and it is not cheap. Not the right tool for a one-person shop quoting ten panels a year. See our full head-to-head at AutoCAD Electrical vs EPLAN for a detailed breakdown.
Best for: OEMs, system integrators, and panel shops with repeat project structures that justify the setup investment.
AutoCAD Electrical
AutoCAD Electrical is Autodesk's electrical design vertical layered on top of the AutoCAD drawing engine. If your team already lives in AutoCAD for mechanical or P&ID work, the transition is lower friction than moving to a purpose-built E-CAD platform.
It handles the core documentation deliverables well: schematic capture, panel layout, wire numbering, terminal strips, and BOM. The PLC I/O tools — the PLC Wizard and the I/O address import — are genuinely useful for generating I/O wiring sheets from an address table.
Where it falls short: Because it builds on AutoCAD's DWG model rather than a true relational project database, large cross-project changes and live consistency checking are less robust than EPLAN. The learning curve for engineers coming from non-AutoCAD backgrounds can be steep for reasons that have nothing to do with electrical design.
Autodesk licensing has moved primarily to subscription (Autodesk publishes current pricing on its site). Education licenses are available. Trials are available.
Best for: Shops already in the Autodesk ecosystem; engineers who need to hand off drawings to a mechanical team using Inventor or AutoCAD.
Zuken E3.series
Zuken E3.series is a strong mid-to-high-end option particularly well suited to projects where the panel is part of a larger machine harness. E3 handles cabinet layout, schematic, and formboard harness drawings in a single project environment — something neither EPLAN nor AutoCAD Electrical do as cleanly for harness work.
The component database and manufacturer catalog coverage are solid. E3 supports collaborative project environments through its central server option.
Where it falls short: Less name recognition in North America than EPLAN or AutoCAD Electrical, which can affect hiring and contractor familiarity. Pricing is enterprise, not self-serve.
Best for: Machine builders who produce both the panel and the machine harness in the same engineering workflow.
Siemens Electrical Designer / COMOS
Siemens offers electrical design tooling at multiple levels. COMOS is the enterprise, plant-lifecycle platform used in process and power industries — it connects P&ID data, instrumentation, and electrical design in a single consistent model. For TIA Portal users, Siemens Capital (from the Mentor/Siemens EDA acquisition) adds harness and E/E design capabilities.
For panel builders working primarily on Siemens automation, the integration between TIA Portal and E-CAD tooling is the argument for staying in the Siemens stack.
Where it falls short: COMOS is very much a process-plant tool; it is overkill (and over-budget) for discrete machine building. The Siemens electrical portfolio has fragmented branding across multiple acquisitions, which makes it confusing to evaluate.
Best for: Process and power plant engineering; Siemens-centric automation environments.
SolidWorks Electrical
SolidWorks Electrical (part of the Dassault Systèmes portfolio) shines in environments where the mechanical and electrical design must coexist in a single 3D model. You can place electrical components on a 3D panel back plate, route conduit in 3D, and keep BOM synchronized between the mechanical and electrical worlds.
The 2D schematic module (SolidWorks Electrical Schematic) is available as a standalone product if 3D is not a priority — it is a capable E-CAD tool in its own right with reasonable symbol libraries and BOM management.
Where it falls short: If your team is not already in SolidWorks, the 3D integration story is not a selling point. Pricing is per seat, subscription-based; check Dassault's current pricing or your VAR for quotes.
Best for: Mechanical-electrical co-design in SolidWorks environments; machine builders who want routed 3D wiring.
SEE Electrical
SEE Electrical (from IGE+XAO) is the most credible mid-market option for shops that need a proper E-CAD tool without an enterprise price tag. It offers a free Basic tier that handles single-sheet schematics — useful for evaluating the platform before committing.
The paid tiers add multi-sheet projects, terminal management, BOM, and panel layout. Manufacturer catalogs are included. The user interface is more approachable than EPLAN for engineers without prior E-CAD experience.
Where it falls short: The free tier is limited to simple projects. Advanced PLC I/O import and collaborative project management are paid features.
Best for: Small-to-mid panel shops looking for a gradual path from basic schematic drawing to full E-CAD; engineers evaluating E-CAD for the first time.
nVent EPLAN / iCAD
nVent's iCAD (formerly known as Rittal iCAD) is a layout-first design tool oriented around enclosure selection and component placement rather than schematic capture. It integrates tightly with the nVent/Rittal enclosure catalog, making it useful for generating accurate panel layout drawings and bills of material for the enclosure builder.
It is not a replacement for a schematic-first E-CAD tool — it works best as a complement to EPLAN or AutoCAD Electrical for the physical layout phase.
Best for: Panel builders who want accurate 3D enclosure layouts and direct catalog integration with nVent/Rittal hardware.
circuitdiagrammaker.app — Free, Browser-Based Option
Disclosure: circuitdiagrammaker.app is a tool published by the same team behind this site. We're including it because it genuinely fills a gap the heavyweight tools leave open — and we want to be upfront about that.
The incumbents above all have one thing in common: they require a Windows PC, a multi-day installation and setup process, a license seat (often costing thousands of dollars per year), and a non-trivial learning curve before you produce your first drawing.
For a significant subset of what controls and panel engineers actually need day-to-day, that is overkill. Specifically:
- Sketching a schematic to communicate an idea to a customer or fabricator
- Documenting a simple panel or retrofit quickly
- Producing a wiring diagram for a small machine or test stand
- Collaborating with someone who does not have an E-CAD seat
circuitdiagrammaker.app is a free, browser-based schematic and wiring diagram tool. No install. No license. Works on Windows, Mac, Linux, or a tablet. You open a browser tab and start drawing.
It is not a replacement for EPLAN on a 5,000-I/O project with forty discipline engineers. It does not have automated BOM generation tied to a manufacturer catalog, PLC I/O database import, or revision management workflows. If you need those features, you need one of the enterprise tools above.
But if you need to draw and document a panel schematic fast — and you do not want to open a support ticket with IT to get a license installed — it is worth a look. It is the free, browser-based row in the comparison table at the top of this page, and it earns that row honestly.
Free vs. Paid Control Panel Design Software
The honest picture on free control panel design software:
Most enterprise E-CAD platforms offer trials (typically 30 days), not permanent free tiers. SEE Electrical is the notable exception with a functional free Basic tier. Several vendors offer student or educational licenses at no cost or low cost — worth pursuing if you are in a learning context.
The practical gap is at the professional level: there is no free, full-featured alternative to EPLAN or AutoCAD Electrical for production use. The closest options are:
- SEE Electrical Basic — free, limited to single-sheet projects
- circuitdiagrammaker.app — free, browser-based, schematic and wiring diagrams (no BOM/catalog features)
- QElectroTech — open-source desktop E-CAD, active community, limited catalog
- KiCad — primarily PCB-oriented, but the schematic editor can be repurposed for simple control schematics
For a fuller list of free options across the industrial electrical space, see our guide to free electrical CAD software.
If you are evaluating free tools to document PLC-based panels specifically, our PLC documentation best practices guide covers what the documentation package needs to contain — which helps you evaluate whether a free tool's output will actually meet your project requirements.
Frequently Asked Questions
What is the best control panel design software?
There is no single answer — it depends on project complexity, team size, and budget. EPLAN Electric P8 is widely considered the industry standard for large OEM and industrial panel design due to its database-driven project model and PLC integration depth. AutoCAD Electrical is the right choice for teams already in the Autodesk ecosystem. For smaller shops or simpler projects, SEE Electrical offers a more accessible entry point. If you need only a schematic or wiring diagram and want zero setup friction, circuitdiagrammaker.app is a free browser-based option.
Is there free control panel design software?
Yes, with caveats. SEE Electrical Basic offers a free single-sheet tier. circuitdiagrammaker.app is fully free and browser-based for schematics and wiring diagrams. QElectroTech is open-source and free. None of these replicate the full feature set of enterprise E-CAD tools — automated BOM generation tied to live manufacturer catalogs, PLC I/O database import, and multi-user project management are all paid-tier features across the market. See our free electrical CAD software guide for a complete breakdown.
What software do panel builders use?
Professional panel shops most commonly use EPLAN Electric P8 or AutoCAD Electrical as their primary E-CAD platform, depending on geography and industry vertical. EPLAN dominates in European-style machine building; AutoCAD Electrical has strong penetration in North American industrial environments. Mid-size shops increasingly use SEE Electrical for its lower cost of entry. The physical layout and enclosure side often involves complementary tools like nVent iCAD or the built-in panel layout modules within the primary E-CAD platform.
Can you design a control panel in AutoCAD?
You can use standard AutoCAD (without the Electrical vertical) to draw panel schematics, but it lacks the automation features that make E-CAD productive: automatic cross-referencing, wire numbering, component tag tracking, and live BOM generation. You end up doing manually what E-CAD does automatically — which is fine for very simple panels but becomes a liability at scale. AutoCAD Electrical adds all of those automation features on top of the familiar AutoCAD drawing environment. The full comparison of where AutoCAD Electrical and EPLAN differ is covered in our AutoCAD Electrical vs EPLAN article.
