Don't order a planset. Design one.
Permit-ready solar plansets in minutes: the complete set, not a partial one you finish in CAD. SLD, electrical, structural, AHJ sheets, all derived live as you draw, with a PE's judgment built in.
4,700+plansets permitted
$50/ planset
If you can design it, that's the price. Any county. Revisions included.
Quick application · most approved within a day.
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Your drafter.
Your project manager just became your drafter.
It automates the repetitive analytical work, the drafting, the reports, and the letters, so the person who manages the project can produce it.
- 1
~20 min
Design
Drag-and-drop in our editor. Equipment library + layout in minutes.
- 2
Live
AHJ checks
Every Florida county supported. The engine flags problems before the AHJ does.
- 3
Done
Permit-ready planset
Yours to submit: stamped or unstamped, your call.
One tool. Installers and engineers. Same engine either way.
You design the planset; the platform does the engineering. Pay per planset. No subscription, no minimums.
Per planset
$50/ planset
Full engineering: SLD, electrical, structural, AHJ checks. Revisions included. Use it for one project or a hundred.
Commercial & complex
Quoted
Multi-family, large systems, battery-heavy, generator. Request a custom design and we’ll quote it.
Need it stamped? Request a PE stamp right inside the app, and we’ll handle the rest.
Ryan Gittens, PE
Licensed PE · Founder
Founder
I built this because design was the bottleneck.
I’m a Florida PE. I built SDL because the tools I had were introducing errors.
Even a simple residential project pulls from too many sources: AutoCAD for geometry, Excel for wind loads, NEC tables for conductor sizing, ASCE for structural, the AHJ for local code quirks. None of them talk to each other. Every handoff is a place a number can be transcribed wrong, a reference can go stale, a rule can be missed.
So I built one interface that holds all of it. Every Florida AHJ, every NEC rule, every ASCE wind load, in the same engine, applied automatically, checked live as the design takes shape. The platform is the tool I built to catch my mistakes before they shipped.
If I wouldn’t sign it, it doesn’t ship.
That standard runs on every design you place, automatically.
License PE90605, verifiable at FL DBPR
Built for solar, not adapted from CAD
The most thorough SLD engine in solar.
Most planset tools are missing pieces. Some skip structural, some skip electrical, some leave the AHJ rules to you.
We ship the complete packet in one engine. Structural, electrical, roof layout, AHJ rules per county.
The actual engine, not a demo. The same one that produces permit-ready plansets every day.
Wire sizes, OCPDs, ground paths derive live from the design. The design check engine catches what’s missing before the AHJ does.
Any topology
Microinverter + string + battery + supply-side tap, on the same canvas, in minutes.
Live electrical correctness
Wire sizing, OCPD propagation, ground inclusion, voltage drop. All derived from the design itself, not hand-entered.
No template lock-in
New equipment drops into the database and connects to everything else the next day.
Design coach
Live help, with full context of your design.
Hit a code question mid-design? Just ask. The coach reads the project you’re actually looking at, then answers from your jurisdiction’s rules, the equipment manuals, and the NEC. No tab-switching, no PDF hunting, no guessing.
Full project context
It reads the design on your canvas: every block, wire, and rating. Answers are about your project, not a generic reply.
Your AHJ’s special requirements
County-level rules are encoded in the engine, so it flags what your specific jurisdiction asks for, before you submit.
Equipment manuals, indexed
Manufacturer install manuals and datasheets are searchable. Ask what the spec actually says, and get the cited passage.
NEC rules, cited
It points to the article (690, 705, 240, 250), not just an opinion. The same rules the design check enforces.
Design Coach
Reading your project
No upgrade needed, but you’re at the limit. Your 200A busbar with a 200A main allows 40A of backfeed under the 120% rule (NEC 705.12(B)).
The inverter on your canvas outputs 37.5A, which sizes to a 50A breaker, 10A over. Two clean paths:
- 1. Drop to a 40A breaker if the inverter listing allows.
- 2. Set a Power Control System (NEC 705.13).
Heads up: your jurisdiction wants the PCS set point and the manufacturer listing included in the submittal.
Illustrative. The coach answers from your live design, your AHJ, and the manuals.
Complete engineering package
Everything an AHJ asks for. Every time.
- Structural letters
- Wind & snow load analysis
- Fault current calcs
- Voltage drop & conductor sizing
- Single-line diagrams (SLD)
- Equipment list / BOM
- Cover sheet, site plan, electrical, structural sheets
- AHJ-specific labeling & signage
The engineering calculators the platform runs on.
Wind load · Fault current · Voltage drop · Conductor sizing · String sizing.
Real support, built in.
Not a ticketing system. Not an email thread. Not a portal that emails you to log into another portal. Hit a weird main-panel upgrade, a code question, an unusual layout? You get a real answer from a real solar engineer. Fast, in the workspace.
Expert help · In-app messaging · Live status · All your projects in one place.
312 Maple St
Project #2418 · Residential
Ryan G., PE
2:14 PM
The engine flagged your supply-side tap, the conductors are short of the 10-ft rule.
2:31 PM
You
Ah. What’s the cleanest fix?
Ryan G., PE
2:38 PM
Upsize the tap conductors and re-run the check. That’ll clear it.
3:05 PM
You
Done. All green. Submitting.
Pass the design check, and we stand behind it.
SDL tracks AHJ requirements across Florida and keeps them current: it’s core to how the engine works. When the design check passes, your planset is complete and code-correct.
If an AHJ rejects it on a deficiency our check should have caught, our engineers fix it free. And if SDL genuinely can’t produce what your project needs, you don’t pay: we refund the $50. No one should pay for a tool that couldn’t do the job.
Where we work
Florida is home base. The tool works anywhere you build.
The free comparison
Bring us your last planset.
Built for the everyday residential roof mount you do every week. The job that shouldn’t take 3 days. Send us one you recently paid for, we’ll rebuild it on the platform, record a 5-minute walkthrough, and hand it back so you can compare.
Standard residential · roof-mount · Q Cells or microinverters · Tesla battery or solar-only · up to 15 kW · Florida
FAQ
The questions everyone asks.
How is this different from Aurora or GreenLancer?
Different jobs. Aurora is a sales tool: production estimates, consumption offsets, proposal renders. GreenLancer is an outsourced design service: you send the project out and wait for it to come back. SDL is the permit-engineering layer you run yourself: the SLD, conductor schedule, structural, and AHJ checks generate live as you design. Plenty of shops keep Aurora for selling the job and use SDL to engineer it.
I'm an engineering firm. Can I use this for my own projects?
Yes. Engineers run their own projects through the same engine installers use: full SLD, electrical, structural, and live AHJ checks, all derived from the design. Your projects, your clients, your stamp. Same $50 per planset.
Do you offer stamps, or just the design tool?
The tool is the product. $50 buys the design and engineering. If you're an installer and need a stamp, request one inside the app and we'll handle it as a separate service, priced separately. If you're an engineer, you stamp your own work. The tool just gets you there faster.
Do I have to use your engineer?
No. Design the planset yourself, then invite your own engineer to review and stamp it right in the project, or request one of ours if you don't have one. Your call.
Is the first planset really free?
Yes. Design your first planset, no charge, no credit card. If the platform doesn't beat what you're doing now, you've lost nothing.
Why do I have to apply for access?
Every account gets reviewed by our team. The platform produces real engineering documents and the support comes from real engineers. We keep the user base professional so both stay that way. Most accounts are approved within one business day.
Does the design check guarantee my planset gets approved?
It guarantees your planset is complete and code-correct, that's what the check verifies. We track AHJ requirements across Florida and keep them current, so most check-passed plansets clear the AHJ first try. But approval also depends on your design choices and your specific jurisdiction, which is why we're straight about what we do and don't cover below.
What if the AHJ rejects my planset?
Depends why. If it's a deficiency in the planset itself, something our check should have caught, we fix it free. If your AHJ wants something specific that's outside what a planset covers (an elevation profile, a local document, a method they don't allow), that's a jurisdiction requirement, not a planset error: our experts will help you handle it, and it makes the engine smarter for everyone. And if SDL genuinely can't produce what your project needs, we refund the $50.
How current is your AHJ data?
We maintain it continuously, keeping jurisdiction requirements current is core to what the engine does. AHJs change and sometimes don't announce it, so if yours asks for something we didn't have, tell us. We'll help you sort it and add it. That feedback loop is how the engine keeps getting more accurate.
What if I design something and it just doesn't work for my project?
You're not stuck paying for it. If SDL can't produce a planset that works for your job, the $50 is refundable. You only pay for a planset the tool can actually deliver.
What about projects outside Florida?
The platform works everywhere. Design any project, any state. The automatic AHJ checks are deepest in Florida today and expanding state by state. Need a stamp outside Florida? Ask, and we'll tell you straight whether we can cover it.
Can I get on the phone with someone?
Yes. Twenty minutes, your real project, no pitch deck. The slot you book is on a real engineer's calendar.
From our engineers
The rules behind the plansets.
The NEC sections and design conventions our engine enforces, written out plainly. The same judgment that runs live as you design.
NEC Compliance
The 120% Rule vs Power Control Systems
When an NEC 705.13 Power Control System lets you skip a service upgrade, and where the 120% rule still applies.
NEC Compliance
PV String Sizing, Explained Properly
The full variable checklist behind NEC 690.7: panel inputs, inverter constraints, ASHRAE temperature corrections, and the step-by-step math.
Solar Design
Solar Wiring Diagram Guide
What every PV (and PV + storage) wiring diagram needs: single-line vs three-line, conductor schedule, OCPD, EGC, and the labels every AHJ checks.
Try one. Either it beats what you have or it doesn’t.
We don’t invoice the first planset.
Quick application · most approved within a day.