Solar Production
NREL TMY kWh
$0.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.
Solar Production - professional NEC calculator for electricians. Offline, permit-ready.
Solar Production Estimator helps solar energy professionals estimate annual and monthly energy production for PV systems across all 50 US states and DC.
FEATURES:
- Annual and monthly production estimates using NREL TMY3 irradiance data
- All 50 US states plus District of Columbia
- Tilt and azimuth angle correction for non-optimal orientations
- System loss factor (wiring, inverter, soiling, shading)
- Panel degradation modeling over system lifetime
- Specific yield (kWh/kWp/year) calculation
- Performance ratio and capacity factor metrics
- Daily average production output
CALCULATIONS:
- Annual Production = System Size x Irradiance x (1 - Losses) x Degradation Factor
- Monthly breakdown with state-specific solar resource data
- Tilt/azimuth correction based on deviation from optimal
- Degradation Factor = (1 - rate)^age for aging systems
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
UPGRADE TO PRO:
- Remove banner ads
- Unlimited calculations
- Dark theme support
Designed for solar installers, engineers, and PV system designers working in the United States.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Fixed cross-app links: tapping another SolarTools app in More Tools now opens its App Store page on iPhone and iPad.
- Minor stability improvements.
The developer, Rizvan Adzhoian, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Rizvan Adzhoian
- Size
- 34.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Contains
Advertising
- In-App Purchases
Yes
- Pro Unlock $2.99
- Copyright
- © 2026 Rizvan Adzhoian