Pricing

Need one calculation? Buy a product. One permit job? Get a complete drawing set. Jobs every month? Subscribe and save.

Pay per product

Do it yourself: one calculation or drawing at a time.

Pick a product to open it. Calculating is free: you pay when you download the PDF.

Pay per project

Complete permit-ready drawing set: load calculation, panel schedule, single-line diagram, general notes, and details.

Pick a building type to start the project. One price per building, paid once when the set is ready.

Best value

Subscription

Unlimited load calculations, panel schedules, and single-line diagrams, plus 50% off complete drawing sets.

$29.99/month

Billed $359.88 per year.

Subscribe

Log in or create a free account first. Payment is by PayPal or card.

What is in a complete drawing set

One PDF, one title block, sheets numbered as a set.

  1. E-001General notes and sheet index
  2. E-501Electrical details
  3. E-601Single-line diagram
  4. E-602Load calculation
  5. E-603Panel schedules
Load calculation sheet sample
Load calculation sheet
Panel schedule sheet sample
Panel schedule sheet
Single-line diagram sample
Single-line diagram
General notes sheet sample
General notes sheet

Questions

What is the difference between a product and a project?

A product is one deliverable: a single load calculation, panel schedule, or single-line diagram as a PDF. A project is the complete drawing set for one building: all three, plus general notes and details sheets, on one title block with set sheet numbers.

Which sheets are in a drawing set?

E-001 general notes and sheet index, E-501 electrical details, E-601 single-line diagram, E-602 load calculation, E-603 panel schedules.

Can I cancel a subscription anytime?

Yes. Cancel whenever you like and keep access until the end of the period you paid for.

Which code editions do you support?

NEC 2023 and NEC 2026. California projects also get California Energy Code and CALGreen requirements in the general notes.

Do I need an account to try it?

No. Fill in any calculation and see the result without an account. A free account is only needed to save a project or download the PDF. The free tools need no account at all.

Calculation methods and drawing templates are prepared and checked by licensed electrical engineers. The output for your project is generated automatically and is not individually reviewed or stamped: have your design professional and the Authority Having Jurisdiction (AHJ) verify it.