Arka 360
Arka360
Design & simulation · Web
A 3D solar design, proposal and lead-management platform, originally Indian and now selling into the US with an attached permit-plan-set and PE-stamp service arm.
Solar design & simulation · Electrical design
16 of the 100 products we researched carry this capability, 14 of them at the depth we code as advanced. 1 explicitly do not offer it, which is a useful fact in its own right. For 18 more we searched the vendor’s own pages and found no statement either way.
Producing the one-line electrical drawing a permit office and an inspector read: array, strings, combiners, inverters, disconnects, conductors and the point of interconnection, on one sheet.
Verified against the vendor’s own pages.
The SLD is the document that gets a permit rejected. Generating it from the design you already built removes the transcription step where the errors live, and it is often the difference between a design tool and a design tool an engineer will actually use.
8 of the 16 products that carry it publish a price you can check before contacting sales.
Every phrase below appeared on a vendor’s own site during research and was mapped onto the
single canonical capability Single-line diagram. The count is how many products used
that exact wording — which is why searching for any one of them finds only a fraction of
the market.
Depth is coded per capability, not on a universal scale, so “advanced” means something specific to this one feature and nothing at all across features.
Basic
A diagram is produced from the design, but with a fixed template and limited or no control over components, labelling or conductor schedules.
Advanced
The diagram is editable and carries the electrical detail an AHJ expects — conductor sizing, overcurrent protection and labelling — rather than a generic illustration.
Not a ranking — no product on this site is scored. Ordered by the depth we could verify, then alphabetically.
Arka360
Design & simulation · Web
A 3D solar design, proposal and lead-management platform, originally Indian and now selling into the US with an attached permit-plan-set and PE-stamp service arm.
Midsummer
Design & simulation · Web
A UK-only, MCS-oriented solar design and sales tool that is free at the base tier and £35/month for Pro, published by a solar wholesaler — so the kit list it produces drops straight into a trade order with live pricing and next-day delivery.
Enact Systems Inc.
Design & simulation · Web
A design-through-monitoring solar platform that, since acquiring PVComplete in January 2026, sells its own web design and proposal tool alongside PVComplete's AutoCAD-based engineering product and an asset-management/fleet-monitoring layer.
Helios 3D (a product of STÖHR+SAUER CAD- und Computersystem GmbH)
German engineering software for utility-scale ground-mount PV that runs inside Autodesk Civil 3D — TIN-terrain-accurate rack and tracker placement, per-rack local grading, full electrical layout with cable and voltage-drop calculation, single-line diagrams, a yield estimate on Meteotest data, and a VR viewer — sold by quote only, with no price published in either English or German.
Aurora Solar Inc. (acquired Folsom Labs, 2019)
Design & simulation · Web
Cloud commercial-and-industrial PV design and simulation tool — rooftop, carport, ground mount and storage in one project — sold per seat, with a stated accuracy target relative to PVsyst and a PVsyst export on the top tier.
OpenSolar Inc.
Proposals & sales · Web
A free-to-use solar design, proposal and project-management platform funded by manufacturers, financiers, distributors and other partners rather than by the installers who use it.
Valentin Software GmbH
Design & simulation · Desktop
Windows desktop PV design and simulation package built around 3D shading — model the buildings, extrude them from a cadastral map, place up to 7,500 mounted modules, and get a yield forecast, a circuit diagram and a customer-facing report, for a published €845/year named-user licence.
PVComplete
A four-product solar engineering suite — PVSketch and PVCAD for rooftop/C&I, PVSketch MEGA and PVCAD MEGA for ground mount — whose distinguishing feature is that PVCAD runs *inside* AutoCAD, so the permit drawing and the PV model are the same file.
Pylon
Proposals & sales · Web
An Australian solar and battery design and proposal tool sold per project on prepaid credits rather than per seat, with an optional per-user CRM bolted alongside it.
Reslink Technologies Private Limited
Design & simulation · Web
A mobile-first 3D solar design and proposal platform for Indian EPCs that claims to take a rooftop from satellite imagery to a bill of materials and a signed-ready proposal without a site visit.
SMA Solar Technology AG
Design & simulation · Web
A German inverter manufacturer's PV planning tool, free in two tiers and €600/year for a third, covering on-grid and off-grid design, 3D visual roof planning with shading analysis, profitability, and quotation output.
Glytrix
CRM & lead management · Web
An Australian solar CRM with design, proposals and invoicing built in, metered on a monthly token allowance rather than on seats or projects.
SurgePV Technologies Ltd
Publisher’s own product — never ranked
Design & simulation · Web
A browser-based solar design, shading, yield, electrical and proposal platform sold per seat on an annual subscription, aimed at installers and EPCs who want one tool instead of a CAD package plus a simulation engine plus a spreadsheet.
Xendee Corporation
Storage & microgrid · Web
A modular microgrid and DER platform that co-optimises investment and operation with mixed-integer linear programming, sold as three separately priced seats — a proposal tool, a design tool, and a live controller.
The rarest kind of fact in this dataset: a vendor stating a limit in its own words. It is not a criticism — a tool that doesn’t do this may be the right tool for a different job.
18 products make no statement either way
We searched these vendors’ own pages and found neither a claim nor a denial. That is recorded as “not found”, which is different from “not offered” — the capability may well exist and simply not be documented. We never convert silence into a no.
Categories these products sit in
Capabilities bought alongside it
Terms worth knowing
16 of the 100 products we researched carry single-line diagram generation, 14 of them at the depth we code as advanced. 1 explicitly do not offer it. Verified against vendor pages on 28 September 2026.
Producing the one-line electrical drawing a permit office and an inspector read: array, strings, combiners, inverters, disconnects, conductors and the point of interconnection, on one sheet.
Vendors name it 6 different ways on their own sites, including “Single-line diagram”, “Electrical output (SLD, cable sizing)”, “Single-line diagram generation”, “Permit set / single-line diagram”. We normalise all of them onto one canonical capability so they can be compared.