End-to-End Solar Engineering Services For Installers & EPCs Across USA

Delivering end-to-end solar engineering services: from solar planset design and solar PE stamping to solar permitting services. We help installers and EPC companies across the USA close projects faster, with fewer rework and first-time documentation success.

ENGINEERING EXCELLENCE

Why Solar Installers Choose WattMonk?

Choosing the right engineering partner directly impacts how fast your projects move from design to approval, and how smoothly they get there.

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Fastest Turnaround Time

2-24 hour turnaround on every plan set, regardless of system type or project complexity.

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AHJ Compliant Solar Plans

Our reviewers and tools are built against 12000+ AHJs and 500+ utility databases.

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Solar Engineering Experts

250+ engineering experts with 8+ years of seeing jurisdictions, edge cases, and design scenarios.

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Reduced Errors & Revisions

Every plan set runs through an AI-verified QC checklist before it reaches you.

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Built for speed & Accuracy

Our Core Solar Engineering Services

Field-verified, permit-ready and fully in-house: from site survey to solar interconnection. 

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FASTER DEAL CONVERSIONS

Solar Sales Proposal

With a 3D LIDAR model of your clients’ roof, a shade analysis, and projected savings already mapped out. Wattmonk delivers a detailed solar sales proposal — built from LIDAR and Google Maps imagery, accounting for obstructions, roof slope, and string sizing — within 2 hours of the request.
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FIELD DATA & INTELLIGENCE

Solar Site Survey

Show up to a site knowing exactly what you're working with. No surprises mid-install, no rework after final inspection. That's what a solar site survey looks like with us. Pre-installation assessments and post-installation & final inspection support handled through our solar field operations team.
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SMARTER PLANSETS, SMOOTHER APPROVALS

Solar Planset

Submit once, and get your approvals. Our solar plan set services give you permit-ready solar plans with solar design drawings built to your AHJ's exact requirements, residential or commercial. 
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SAFETY & COMPLIANCE

PE Stamping

Every package is checked for code compliance and engineering alignment so your stamped plans move forward with fewer approval delays.
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PERMITS, MADE EASY

Solar Permitting

Stay on the tools, while we handle the jurisdiction. Our solar permitting services cover everything from solar permit design to solar permit approval across AHJ solar permitting requirements, without you having to track down a different contact for every county.
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UTILITY PERMISSION & GRID CONNECTION

Solar Interconnection & PTO

Solar PTO services and solar interconnection services from us carry your project through PTO approval and utility interconnection, all the way to the finish line, not just the install.
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Intelligent Shift

AI Powered Solar Engineering

An AI solar engineering layer built into every project we deliver.

PlanSetIQ

Every plan set runs through PlanSetIQ — our AI Solar Design  verification tool trained on 125K+ approved submissions across 12.5K+ AHJs. You get a confidence score, a mapped QC report, and a jurisdiction-checked plan set before it leaves our desk.

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Solar Agent Hub

The solar brain behind all solar engineering process automation. It comes with web search, custom workflow and task scheduling capabilities. Just chat, upload your documents and it's done.

QC ANALYSIS, REAL-TIME VALIDATION

Get It Right the First Time With Verified QC Report

Our quality check process ensures your solar projects meet engineering and permitting standards before submission.

Trusted Solar Engineering Partner Across the USA

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125000+

Projects Delivered

400+

Installers Supported

12000+ 

AHJ Coverage

500+

Utilities Covered

Testimonials

Hear From Our Satisfied Clients

Explore what our clients say about their experience with Wattmonk  Services.

Frequently Asked Questions

Find answers to your common solar engineering & technology inquiries here.

Do you only work with large EPCs, or can smaller installers use Wattmonk too?

Both. Whether you're running 5 projects a month or 500, the platform and the process are the same. Solar services for contractors at any volume, with no minimum order requirements.

Do you only work with large EPCs, or can smaller installers use Wattmonk too?

Both. Whether you're running 5 projects a month or 500, the platform and the process are the same. Solar services for contractors at any volume, with no minimum order requirements.

Do you only work with large EPCs, or can smaller installers use Wattmonk too?

Both. Whether you're running 5 projects a month or 500, the platform and the process are the same. Solar services for contractors at any volume, with no minimum order requirements.

Do you only work with large EPCs, or can smaller installers use Wattmonk too?

Both. Whether you're running 5 projects a month or 500, the platform and the process are the same. Solar services for contractors at any volume, with no minimum order requirements.

How does Wattmonk handle projects across different AHJs?

Our AHJ solar permit process runs against a database of 4,500+ jurisdictions and 500+ utilities. Whatever state or county your project is in, the requirements are already loaded before we start.

What are the most common reasons solar permits get rejected and how do you prevent them?

Most solar permit rejection reasons come down to incomplete documentation, setback errors, or electrical specs that don't match local code. Wattmonk's multi-layer QC catches all three before submission.

Does Wattmonk handle solar PTO and utility interconnection?

Yes. The solar PTO process and utility interconnection solar coordination are both covered from interconnection application through permission to operate, so your project closes completely.

How quickly can Wattmonk turn around a plan set?

2-24 hours, regardless of system type or project complexity. Every solar plan set goes through QC before it reaches you, so speed doesn't come at the cost of accuracy.

How does Wattmonk use AI in its engineering process?

AI solar engineering runs through PlanSetIQ, our internal tool trained on 100,000+ approved submissions. It handles electrical calculations, SLD generation, and QC verification, reducing manual errors across every plan set we deliver.

How does Wattmonk ensure accuracy across high project volumes?

Solar design automation handles the calculations and initial QC. 150+ expert reviewers handle the final check. The two layers together are what sit behind the 90% first-pass success rate.

Can AI catch errors that human reviewers miss?

The two work together, not against each other. AI solar design verification runs first — flagging calculation errors, compliance gaps, and missing documentation at speed. The human review layer then validates what the AI surfaces. Between the two, very little gets through.

How does AI handle site survey data before engineering begins?

Solar design automation reviews site survey inputs for completeness before the engineering team starts work, flagging missing information and confirming design readiness upfront. It removes the back-and-forth that typically slows the handoff between field and desk.

FROM THE FIELD, TO YOUR INBOX

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