Residential Solar Design Services

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Solar Design Services
residential solar system design

Residential Solar PV Design

residential solar system designresidential solar system design

With 100 years of combined experience, Illumine-i holds the record of first-time AHJ approvals in the Solar Industry. We prefer quality over everything else and our client satisfaction rate is above 97%.

Each state has its own standards and specifications; our team is trained to work keeping in mind the necessary requirements. Taking into account your accurate project requirements, our residential solar plan set or permit will have all essential features, such as:

  • Schematic line drawings
  • Two-dimensional layout drawings
  • Site installation drawings
  • Roof or ground mounting schematics
  • Voltage calculation
  • OCPD/Interconnection calculation
  • And all that is necessary for an approved permit
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Our Typical Solar permit plan set provides the following details for the installation of solar panels, with or without battery backup, and if the residential system is Grid-tied or Off-Grid. The plan set is drafted to meet all state, local, and utility requirements.

  • Cover Sheet
  • Site Plan
  • Roof Framing Plan
  • Electrical Plan
  • Single Line Diagram
  • Three Line Diagram
  • Labels & Datasheets (Spec Sheets)
  • Stringing Configuration (if required)
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Residential PV Design Services

System Sizing and Production Estimates

  • Preliminary Solar Assessment and Specific Production Estimation

Equipment Selection

  • Inverter/Module recommendation and BOS selection

Solar Layout

  • Efficient and aesthetic PV Array layout


  • Dead Load Calculations
  • Solar Structure Attachment and Anchoring Details
  • Review of existing structure to support solar
  • Structural Review (in US only)


  • Wire and Conduit Sizing
  • Electrical Site Plan
  • Electrical Line Diagram
  • Warning Labels and Placards
  • Electrical Review (in US only)

Explore Design Services

Solar Permit Services
Commercial Solar Design Services
Solar Permit Services
Utility Scale Solar Design Services
Solar Permit Services
EV Charging Station Design Services

Frequently Asked Questions

1. What is the turnaround time for residential solar design services?

Within 24 hours for residential plans and 48 hours for structural and electrical review, the lead time varies for commercial projects based on specific details.

2. Are you familiar with electrical and structural reviews for all 50 states?

We can provide reviews in all 50 states and its AHJs.

3. Can you do permit plans for EV charging stations, Carports, Powerwall batteries, etc.?

Yes, we are well-versed in providing designs for EV charging stations, Carports, Powerwall batteries, etc. for both residential and commercial use.

4. Do you carry any Insurance?

We have professional liability insurance for errors and omissions with an aggregate claim value of 2 million dollars  but thankfully there has been no claim so far.

5. How do you differ from others?

Our whole world revolves around you, and we work hard day in and day out to ensure that you receive elite treatment. Client satisfaction is of utmost importance to us, and we wish to be your trusted partner through thick and thin.

6. Would you be able to do site visits?

We can provide site visits for Large commercial and utility-scale projects if needed in the state of California, but other than that we don't do site visits  . But for residential projects We can put you in touch with our contacts who could do site visits.

7. What do I need to do to get started?

Firstly, both parties sign a service agreement after which you need to fill out an input checklist that we share with you which gives us the necessary information we need for designing permit plans and provide electrical and structural stamps specific to each project.

8. When is the payment due?

Usually before 30 days from the receipt of invoice, but there are also case-by-case adjustments pertaining to situations.

9. What are the methods of payments?

Credit Card, Debit Card, Wire transfer, online cash transfer.

10. Do you fill up interconnection applications, do permit runs?

We typically don’t do interconnection applications, but we can provide the same at an additional cost.

11. Would you be able to help with the installation?

We are a design and engineering firm and do not have install crews. We can put you in touch with subcontractors in your area if we know one.