# MPU Assessment Tool

> MPU Assessment Tool (iPhone/iPad app by Lee Hatley.)

- Source: https://appshunter.io/ios/app/mpu-assessment-tool/id6761432591 (this page in markdown: same URL + `.md`)
- Developer: [Lee Hatley](https://appshunter.io/developer/1889599254)
- Category: Productivity, Business
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 5 MB
- Languages: American English
- Released: 2026-04-07
- Data updated: 2026-07-05
- User reviews in markdown: https://appshunter.io/ios/app/mpu-assessment-tool/id6761432591/reviews.md

## What is MPU Assessment Tool?

MPU Assessment Tool

The MPU Assessment Tool helps solar installers and electricians determine whether a Main Panel Upgrade MPU may be required before a solar installation.

It is designed to provide quick consistent evaluations so teams can plan projects more efficiently and reduce unexpected issues during installation.

WHAT IT DOES

Enter key details about a customers electrical panel including panel manufacturer main breaker rating panel amperage and proposed solar system size.

The app calculates whether an MPU may be required and provides a clear explanation of the result.

KEY FEATURES

MPU Determination
Provides a yes or no result based on the 120 percent rule and known panel types such as Federal Pacific Zinsco and Pushmatic.

Location Based Flags
Highlights potential compliance concerns such as panels near sinks in wet areas over steps or in restricted locations.

Backfeed Amps Calculation
Calculates required backfeed amperage to help determine appropriate breaker sizing.

Assessment History
Save and review previous assessments for future reference.

Search and Filter
Quickly find saved assessments by customer name or address.

iPhone and iPad Support
Optimized for use in the field.

WHO IT IS FOR

Solar installers
Electricians
Project managers
Site surveyors
Solar sales consultants

WHY IT MATTERS

Accurate MPU assessment helps reduce project delays unexpected costs and rework. The app provides consistent calculations to support better planning and communication.

SUBSCRIPTION

Full access is available for 19.99 per month.

Payment is charged to your Apple ID at confirmation of purchase
Subscription automatically renews unless cancelled at least 24 hours before the end of the current period
Your account will be charged for renewal within 24 hours prior to the end of the current period
You can manage or cancel your subscription in your Apple ID account settings

LEGAL

Privacy Policy https://mpuassessment.com/Privacy

Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| MPU Assessment Premium | $19.99 | per month |



## Version history (last 1 release)

### 1.0 — 2026-04-07

No release notes.

## Related topics

[mpu assessment tool](https://appshunter.io/ios/topics/mpu-assessment-tool)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-05.*