Solar Panel Sizer NEC 690
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About this app
Solar Panel Sizer for NEC 690 PV System Design
# What it does
Calculates the number of panels, system size in kW, annual & monthly production, and roof area requirements for residential and commercial photovoltaic systems.
# Features
- Daily energy consumption (kWh) input
- Peak sun hours by location
- Panel type (mono, poly) and rated wattage
- Grid-tied, off-grid, hybrid system types
- System loss factor (10%-25%)
- Roof area sufficiency check (sq ft)
- Annual & monthly kWh production estimate
- NEC 690.7 / 690.8 references
# Made for
Solar installers, PV system designers, electrical contractors, EPC engineers, NABCEP exam candidates.
# 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
# What it does
Calculates the number of panels, system size in kW, annual & monthly production, and roof area requirements for residential and commercial photovoltaic systems.
# Features
- Daily energy consumption (kWh) input
- Peak sun hours by location
- Panel type (mono, poly) and rated wattage
- Grid-tied, off-grid, hybrid system types
- System loss factor (10%-25%)
- Roof area sufficiency check (sq ft)
- Annual & monthly kWh production estimate
- NEC 690.7 / 690.8 references
# Made for
Solar installers, PV system designers, electrical contractors, EPC engineers, NABCEP exam candidates.
# 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
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No data shared with third parties
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No data collected
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What’s new
v1.0.0 — Initial release
- Calculator with NEC compliance
- Save & history (Pro)
- PDF export (Pro)
- English & Spanish
- Light & Dark theme
- Calculator with NEC compliance
- Save & history (Pro)
- PDF export (Pro)
- English & Spanish
- Light & Dark theme
App support
About the developer
Rizvan Adzhoian
radzhoyan@gmail.com
г. Бишкек, ул М.Алыбаева 19а, кв 31
Bishkek 720006
Kyrgyzstan
