# Solar Panel Sizer — PV Panels, kW & Roof Area

> PV Panels, kW & Roof Area (iPhone/iPad app by Rizvan Adzhoian.)

- Source: https://appshunter.io/ios/app/solar-panel-sizer/id6767838106 (this page in markdown: same URL + `.md`)
- Developer: [Rizvan Adzhoian](https://appshunter.io/developer/1891746079)
- Category: Utilities, Business
- Price: $0.99 with in-app purchases
- Age rating: 17+
- Requires: iOS 13.0 · 32 MB
- Languages: American English
- Released: 2026-05-11
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/solar-panel-sizer/id6767838106/reviews.md

## What is Solar Panel Sizer?

Solar Panel Sizer helps solar energy professionals calculate the number of panels needed for any PV system. Built for installers, designers, and engineers working with residential and commercial solar projects.

WHAT IT CALCULATES
- Number of solar panels required
- Total system size (kW)
- Annual and monthly energy production (kWh)
- Roof area needed (sq ft)
- Roof area sufficiency check

NEC COMPLIANT
Sizing uses the peak-sun-hours method with built-in data for all 50 US states derived from NREL TMY, plus configurable system losses.

PANEL OPTIONS
Choose from 7 standard panel types: 250W to 600W monocrystalline and bifacial panels. Supports Grid-Tied, Off-Grid, and Hybrid system configurations with accurate loss calculations.

FEATURES
- Works 100% offline
- Save calculations to history
- Export professional PDF reports
- English and Spanish (en/es)
- Light and dark themes (in-app purchase)
- Material Design 3 interface

PRO VERSION ($2.99)
Remove ads, get unlimited calculations, and unlock dark theme.

PART OF SOLARTOOLS SUITE
Solar Panel Sizer is part of the SolarTools collection of professional calculators for solar energy specialists.

Contact: support@tradetools.dev
Privacy: https://tradetools.dev/solar/privacy-policy.html

OPTIONAL PRO UPGRADE - $2.99 ONE-TIME IN-APP PURCHASE
The following features require a separate one-time in-app purchase. They are not required to use the calculator:
- Unlimited saved calculation history
- PDF export of results
- Dark theme
- Ad-free experience

## Pricing and in-app purchases

Base price: $0.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |



## Version history (last 3 releases)

### 1.0.2 — 2026-06-13

Honest method labeling:
- Sizing is the peak-sun-hours method (NREL TMY state data) - phantom NEC 690.7/690.8 claims removed from onboarding, PDF and listing
- Panel catalog described as-is: mono 250-500 W + bifacial 600 W

### 1.0.1 — 2026-05-14

- Fixed cross-app links: tapping another SolarTools app in More Tools now opens its App Store page on iPhone and iPad.
- Minor stability improvements.

### 1.0.0 — 2026-05-11

No release notes.

## More apps by Rizvan Adzhoian

- [Conduit Fill Calculator-NEC](https://appshunter.io/ios/app/conduit-fill-calculator-nec/id6761846849)
- [Electrical Load Calc NEC](https://appshunter.io/ios/app/electrical-load-calc-nec/id6763250945)
- [Transformer Calc NEC](https://appshunter.io/ios/app/transformer-calc-nec/id6763311943)
- [Voltage Drop Calc NEC](https://appshunter.io/ios/app/voltage-drop-calc-nec/id6763312448)
- [Grounding Size Calc NEC](https://appshunter.io/ios/app/grounding-size-calc-nec/id6763312724)
- [Breaker Size Calc NEC](https://appshunter.io/ios/app/breaker-size-calc-nec/id6763312865)

All apps by Rizvan Adzhoian: https://appshunter.io/developer/1891746079

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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 2026-09-08.*