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More accurate PV production estimates using location-based PVGIS data Smart panel tilt and orientation recommendations New PV String Check tool for inverter compatibility Improved battery, inverter and appliance sizing Installation checklist and Solar Updates Better offline support, validation and reliability
Align solar panels, set tilt, estimate PV output, battery size and energy use.
Solar Panel Compass is a practical field tool for solar panel alignment, tilt setup and basic PV system sizing. Designed for installers, technicians, DIY users and anyone planning a small solar system, it combines phone sensors with simple solar calculations in one easy-to-use app. SOLAR PANEL COMPASS Use the compass to guide a panel toward the correct south-facing direction. The app shows your heading and gives clear left/right adjustment guidance until alignment is reached. • Live compass heading • South-facing alignment guidance • True North option using device location • Compass calibration warning • Vibration feedback when aligned PANEL TILT GUIDE Set your required panel tilt and use your phone as an angle guide while positioning the panel. • Live tilt measurement • Adjustable target angle • Raise/lower panel guidance • Visual panel angle guide • Alignment feedback when the target is reached SOLAR POWER CALCULATOR Enter the wattage of a solar panel and estimate its expected energy production. View estimated: • Daily energy production • Monthly energy production • Yearly energy production Choose automatic GPS-based sun-hour estimation or use seasonal Summer and Winter modes. ENERGY USAGE Build a simple electricity-use profile from common appliances or add your own. Enter: • Appliance quantity • Power in watts • Daily operating hours The app calculates daily and annual energy use and lets you compare seasonal consumption. PV & BATTERY RECOMMENDATION Use your estimated energy demand to create a practical starting point for system sizing. The recommendation workspace can estimate: • Total solar array size • Number of solar panels • Backup energy requirement • Nominal battery capacity in kWh • Battery capacity in Ah • Number of battery modules • Suggested battery charge current Choose between Hybrid and 100% Off-Grid installation modes and adjust important design inputs including: • Panel wattage • Peak sun hours • Solar system efficiency • Backup days • Battery recovery period • LiFePO4 or Lead Acid / AGM battery • 12 V, 24 V, 48 V or 51.2 V systems • Battery depth of discharge • Inverter efficiency • Battery module capacity SIMPLE FIELD TOOL Solar Panel Compass is designed to keep the workflow clear: align the panel, set the tilt, estimate production, calculate energy needs and obtain a useful first sizing estimate without complicated engineering software. Important: Solar production and battery recommendations are estimates for planning and comparison. Actual PV performance depends on location, season, shading, weather, equipment specifications, installation conditions and system losses. Always verify final electrical and battery sizing against equipment manufacturer requirements and applicable electrical standards.