Solar Cal

Design and plan your solar energy system with confidence! Solar Calculator is a comprehensive, professional-grade mobile app that helps you determine exactly what solar equipment you need and how much it will cost - all based on your actual energy consumption and location.

Whether you're a homeowner exploring solar options, an installer providing quick estimates, or a solar enthusiast optimizing your setup, Solar Calculator gives you accurate, detailed calculations in minutes.

KEY FEATURES

LOCATION-BASED SOLAR METRICS
• GPS automatic location detection
• Manual location search with global coverage
• Interactive map selection (OpenStreetMap - no API key needed!)
• Automatic solar calculations based on your coordinates:
- Peak sun hours for your area
- Optimal panel tilt angles (year-round, summer, winter)
- Solar irradiance (kWh/m²/day)
- Azimuth angle (panel direction)
- Sunrise/sunset times
- Seasonal variations

SMART APPLIANCE MANAGEMENT
• Pre-loaded database with 60+ common appliances
• Add unlimited custom appliances
• Track daily usage hours and quantities
• Real-time power consumption calculations
• Save and load appliance profiles
• Edit or delete any appliance
• Calculate total daily/monthly/yearly consumption

INTELLIGENT SYSTEM RECOMMENDATIONS
• Solar panel sizing and recommendations
• Battery capacity calculations with backup days
• Inverter capacity with surge protection
• System voltage options (12V, 24V, 48V)
• Multiple battery types (Lithium-ion, Lead-acid, Tubular, LiFePO4)
• Customizable panel wattages (100W to 550W+)
• Customizable battery capacities (100Ah to 300Ah+)

ACCURATE COST ESTIMATION
• Complete system cost breakdown
• Component-by-component pricing
• ROI (Return on Investment) calculations
• Payback period analysis
• Monthly electricity savings estimates
• Carbon footprint reduction tracking
• Support for 11 currencies including Pakistani Rupee (PKR)!

CUSTOM PRICING & COMPONENTS
• Set your own local market prices:
- Solar panel price per watt
- Battery price per unit
- Inverter price per watt
• Add custom panel wattages (e.g., 375W, 540W)
• Add custom battery capacities (e.g., 180Ah, 220Ah)
• Match exact products available in your market
• Realistic, location-specific cost estimates

ADVANCED CONFIGURATION
• System voltage selection (12V/24V/48V)
• Backup days configuration (1-5 days)
• Battery type selection with DoD and lifespan info
• Electricity rate customization
• Multi-currency support with full currency names
• Dark mode support
• All settings save automatically

GLOBAL & LOCAL SUPPORT
Supported Currencies:
• US Dollar (USD)
• Pakistani Rupee (PKR)
• Indian Rupee (INR)
• Euro (EUR)
• British Pound (GBP)
• And 6 more!

Perfect for users in Pakistan, India, USA, UK, Europe, Australia, and worldwide!

PRIVACY & SECURITY
• All data stored locally on your device
• No account required
• No cloud storage or remote servers
• No third-party tracking
• Location used only for solar calculations
• Complete data control - export or delete anytime

WHY CHOOSE SOLAR CAL?
✓ No API Keys Required - Uses open-source OpenStreetMap
✓ Works Offline - Calculate anytime, anywhere
✓ Completely Free - No hidden costs or subscriptions
✓ Professional Grade - Accurate calculations and formulas
✓ Regularly Updated - New features and improvements
✓ Pakistan-Friendly - Full PKR support with local pricing
✓ User Privacy - Your data stays on your device

PERFECT FOR
• Homeowners planning to go solar
• Solar installers providing quick estimates
• Electrical engineers designing systems
• Students learning about solar energy
• Off-grid enthusiasts
• Tiny house builders

HOW IT WORKS
1. Set your location (GPS, search, or map)
2. Add your appliances and usage hours
3. Configure system preferences (voltage, backup days, pricing)
4. Get instant recommendations for panels, batteries, and inverters
5. Review cost estimates and ROI calculations
6. Generate and share professional PDF reports