SolarCalc PV Pro+ vs SunStem

SolarCalc PV Pro+ is the ultimate professional toolkit for solar PV system designers, electrical engineers, and solar installation professionals. Packed with 39+ powerful tools, interactive visualizations, and comprehensive reference data - everything you need in one app. ▸ SOLAR PV TOOLS • PV System Sizing - Calculate panel count, inverter size, and battery capacity • Shadow Analysis - Determine shadow length and impact on panel placement • Solar Rooftop - Estimate roof area and panel fitting capacity • Solar Water Pumping - Size PV-powered water pump systems • Off-Grid Load & Sizing - Full off-grid system design with battery backup • Monthly Radiation & Tilt - Optimal tilt angles by month and location • Solar Map - Interactive irradiance map with real-time location data • Sun Path Diagram - Polar sun path visualization with current position • Energy Yield Simulation - Annual energy production with CO₂ savings • Panel Layout Optimizer - Visual roof layout planner with panel grid • Camera Sun Finder - AR overlay showing real-time sun position ▸ ELECTRICAL CALCULATORS • Ohm's Law — V, I, R, P calculations • Voltage Drop — Cable voltage loss analysis • Cable Sizing — Minimum cross-section calculator • DC/AC Power Conversion — Inverter power calculations • Power Factor — cos φ correction analysis • Motor HP — Watt ↔ Horsepower conversion • Inverter Calculator — DC/AC inverter sizing • Conductor Resistance — R = ρL/A calculations • Busbar Current — Current carrying capacity • Transformer Calculator — Ratio and current analysis • Fault Level — Transformer fault MVA • Earthing Conductor — Grounding conductor sizing ▸ REFERENCE TABLES (12) • AWG & SWG Wire Gauge Tables • IP Rating Protection Guide • Material Resistivity Data • PV Cell & Module Specifications • World Electrical Standards • Voltage Classification • AC Breaker Types • Cable Short Circuit Ratings • ANSI Device Numbers • Power Cable Coding • Transmission Conductor Data ▸ PRO FEATURES • Save & Export Projects as PDF • Interactive Solar Map with live irradiance data • AR Camera Sun Finder • Panel Layout Optimizer • Complete reference library ▸ WHY SOLARCALC PV PRO+? • Works offline — no internet required for calculations • Professional-grade accuracy • Beautiful dark/light theme with auto-sunset mode • Location-based solar data • Regular updates with new tools Designed by solar professionals, for solar professionals. Developed by CLK Company https://clk.company Terms of Use: https://solarcalc.net/app/terms Privacy Policy: https://solarcalc.net/app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

SunStem is an offline solar and battery calculator for RVs, vans, boats and cabins. Build a saved system profile, then estimate battery runtime, solar yield, reserve risk and safer system sizing on iPhone or iPad. CALCULATE BATTERY RUNTIME - Compare load, solar and usable battery capacity - Forecast the next charge window and hours to the reserve floor - Work offline from a saved profile and local inputs SIZE AN OFF-GRID SYSTEM - Review battery, PV, MPPT, inverter, wire and fuse planning outputs - Check voltage drop, cold Voc and fuse-versus-wire safety gates - See assumptions and deterministic calculations from the native core AUDIT THE NEXT SEVEN DAYS - Scan daily reserve risk from saved load and solar assumptions - See what to shed, when to charge and why the risk changed - Export facts for a trip partner, installer or hardware review No cloud account is required before first value. SunStem provides planning estimates and field-review evidence, not engineering certification. It does not control chargers, inverters or BMS hardware. Background or unattended hardware monitoring is not promised in this release.