Retearn vs Sizer App

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Sizer is a professional-grade solar system sizing application designed to simplify the complex process of designing efficient and safe solar installations. Whether you are a solar installer, engineer, or energy enthusiast, Sizer provides powerful tools to accurately estimate energy requirements and generate complete solar system specifications in minutes. FEATURES • Load Calculator Easily build your energy profile by adding appliances, usage hours, and wattage. Sizer automatically calculates total daily energy consumption and includes system losses for realistic results. • Complete System Design Generate full system requirements including solar panel capacity, battery bank sizing (Ah & kWh), inverter rating, and charge controller specifications. • Protection & Safety Tools Design safer systems with built-in recommendations for DC and AC breakers, surge protection devices (SPD), and professional cable sizing based on electrical safety standards. • Project Management Save and manage multiple solar system configurations. Resume your work anytime and organize projects efficiently. • Secure Access Sign in securely using Email, Google, or Apple to access your data across devices. • Premium Access Unlock unlimited calculations with a subscription designed for professionals. IMPORTANT NOTICE Sizer provides estimation tools intended to guide solar system design. Final installation decisions should always be verified by a qualified professional. Sizer transforms a complex engineering process into a simple, reliable, and efficient workflow — helping you design solar systems faster, safer, and smarter.