Solar Production NREL TMY

Contains adsIn-app purchases
Content rating
Everyone
1+
Downloads
Content rating
Everyone
In-App Purchases
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Annual Solar PV Production Estimator (NREL PVWatts)

# What it does
Estimates annual and monthly kWh output for a PV system using NREL TMY (Typical Meteorological Year) data and PVWatts methodology.

# Features
- System DC size in kW input
- Tilt and azimuth inputs
- DC-to-AC derate factor
- Annual production estimate (kWh)
- Monthly production breakdown
- Capacity factor calculation
- Compatible with NREL PVWatts inputs
- Quick site feasibility check

# Made for
Solar developers, PV system designers, financial analysts, energy consultants, EPC engineers.

# Optional Pro Upgrade — $2.99 one-time
The following features require a separate one-time in-app purchase. They are not required to use the calculator:
- Calculation history (saved & searchable)
- PDF report export with NEC references
- Dark theme
- Ad-free experience
Updated on
May 9, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

What’s new

v1.0.0 — Initial release
- Calculator with NEC compliance
- Save & history (Pro)
- PDF export (Pro)
- English & Spanish
- Light & Dark theme