Unsure how to safely and code-compliantly run electrical power from a main home to a new guest house given existing panel capacity and load requirements.

No single tool or resource provides a personalized, code-compliant electrical load calculation and feeder sizing guide based on the user's exact panel configuration and planned loads.

Severity

3Medium

Willingness to Pay

implied

Added

Jun 26, 2026

Implied Software Gaps

Personalized electrical load calculator with code compliance reports

App Concept

LoadCalc Pro

A mobile-first app that guides homeowners and small contractors through electrical load calculations and feeder sizing for outbuildings and additions. Users input their existing panel specs and planned loads, and the app generates a NEC-compliant report and checklist, complete with diagrams for subpanel installation.

Key Features

Interactive load calculator for existing panel and new construction
NEC code reference and compliance checklists
Feeder size and breaker recommendation based on distance and load
One-tap electrical contractor referral directory

Target Users: Homeowners and owner-builders doing residential electrical projects, such as adding a guest house or detached garage.

Revenue Model: Freemium with $9.99 per report or $4.99/mo subscription for unlimited calculations and premium features.

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