Upgrading Your Electrical Panel or Service?
NEC load calculations, one-line diagrams and panel schedules for service and panel upgrades – for EV chargers, heat pumps, solar and additions.
- NEC load calculations (standard or optional method)
- One-line diagram and panel schedule
- Service sizing for EV, heat pump and solar
- Serving All 50 States
- Sealed & Stamped
- Drawn In-House in CAD
- Quotes in 5-10 Min
Can Your Electrical Service Handle What You Are Adding?
Adding an EV charger, heat pump, hot tub, addition or solar can push an older service past its limit. Utilities and building departments often ask for a load calculation to prove the service is adequate – or to justify an upgrade.
Send a photo of your panel, the main breaker size and what you are adding. We calculate the load and tell you whether you need an upgrade.
You Probably Need One If You Are:
- Adding an EV charger or heat pump
- Upgrading from 100A or 150A to 200A
- Adding a subpanel for an addition or ADU
- Installing solar or a battery
- Being asked for a load calculation
- Adding a hot tub, sauna or workshop
What Will You Get for Your Electrical Service Upgrade?
Choose a tab for the details.
Load Calculation
NEC Article 220 calculation for your home or building.
One-Line Diagram
Service, meter, panels and feeders on one clear diagram.
Panel Schedules
Circuit-by-circuit schedules for new and existing panels.
Subpanels & Feeders
Feeder sizing and subpanels for additions and ADUs.
EV & Load Management
Load management options to avoid an upgrade where allowed.
Permit Documents
Documents formatted for your utility and permit office.
Clear Proof Your Service Is Sized Right
The calculation, one-line and panel schedule show the reviewer and the utility exactly how your service handles the new load.
- Load calculation report
- One-line diagram
- Panel schedules
- Feeder and breaker sizing
- Sealed where required
These services work together on this type of project – tap one for details.
How Do I Get My Electrical Service Upgrade Plans? 4 Simple Steps
1. Send Your Project
Address, scope and any plans, photos or plan-check comments.
2. Get a Fixed Price
Scope, price and delivery date in 5-10 minutes. Nothing starts until you approve.
3. We Design & Draft
Drawings and calculations prepared in CAD to your local code.
4. Ready to Submit
Sealed and stamped where required. PDFs (and CAD on request).
Your Questions About Electrical Service Upgrade Plans, Answered
Do I need a 200A service for an EV charger?
Not always. A load calculation often shows the existing service can handle it, or that load management avoids an upgrade.
Which NEC method do you use?
The method your jurisdiction accepts – standard, optional (220.82) or existing-load method using utility data where allowed.
What do you need from me?
A photo of your panel and labels, the main breaker size, the home’s size and what you are adding.
Do you work with electricians?
Yes – many of our requests come from electricians who need calculations for permits.
How much does a load calculation cost?
Send your panel photo for a fixed price in 5-10 minutes.
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How Much Will My Electrical Service Upgrade Plans Cost? Price in 5-10 Minutes
Tell us about your project and upload any plans, sketches or photos you have. An engineer reviews every request personally and replies with a clear scope, price and delivery date – typically within 5 to 10 minutes.
- Reply within 5-10 minutes on average
- Clear price and scope before any work begins
- Seal by an engineer licensed in your project's state
- Architectural, structural and MEP under one roof
- Your drawings stay 100% confidential