Off-Grid PV Calculator

Milan Ligo

In-app purchases

About this app

Design and calculate your off-grid photovoltaic solar system with this comprehensive calculator.

• Energy Consumption
Calculate your daily energy needs by entering device power consumption (watts) and operating hours, or directly input your daily energy requirement.

• PV Array Configuration
Configure your solar panel system:
- Get sun hours for your location using GPS or map selection (PRO version)
- Calculate required PV power based on your energy needs
- Configure panel specifications (power, voltage, current)
- Choose connection type (series, parallel, or series-parallel)
- Access detailed solar data (PRO version)
- View monthly energy production charts (PRO version)
- View recommended parameters for solar charge controller (MPPT)

• Battery System
Calculate battery capacity needed:
- Set system voltage (12V, 24V, or 48V)
- Configure autonomous days (sunless days)
- Adjust depth of discharge
- Calculate required capacity in Wh and Ah
- Configure individual battery specifications
- View recommended parameters for inverter

• System Costs & Return (PRO version)
Calculate total system costs and investment return:
- Cost per panel watt
- Cost per battery Wh
- Regulator and inverter costs
- Installation materials
- Electricity price comparison
- Return on investment analysis

Key features
✓ Step-by-step design wizard
✓ Solar data integration
✓ Cost analysis and ROI calculations (PRO version)
✓ PDF export of system design (PRO version)
✓ Works offline (FREE version)
✓ Data sync across devices using Google account

PRO version
PRO features are available via in-app purchase. Upgrade to PRO for advanced features:
• Detailed solar data
• Monthly energy production charts
• Complete cost analysis
• PDF export of system design

FREE features
The FREE version includes:
• Basic energy consumption calculations
• PV array configuration
• Battery capacity calculations
• System design results
• Offline functionality

Perfect for:
• Homeowners planning off-grid solar installations
• Engineers and installers
• Students learning about solar systems
• Anyone interested in solar energy calculations

Start designing your off-grid solar system today!

What’s new

Initial public release