Content rating
Everyone
500+
Downloads
Content rating
Everyone
Learn more
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About this app

Sizer is a professional solar system sizing tool designed to simplify the process of designing efficient and safe solar installations.

Whether you are a solar installer, engineer, or enthusiast, Sizer provides powerful tools to calculate, design, and optimize complete solar systems in minutes.

🔋 LOAD & ENERGY CALCULATOR
• Add appliances with quantity, wattage, and usage hours
• Automatically calculate total daily energy consumption (Wh)
• Includes 20% system loss for realistic estimates

☀️ COMPLETE SYSTEM SIZING
• Solar panel capacity based on sunlight hours
• Battery bank sizing (Ah & kWh)
• Inverter sizing for peak load
• Charge controller calculations

⚡ PROTECTION & SAFETY
• DC & AC breaker recommendations (125% safety rule)
• Surge protection (SPD)
• Professional cable sizing (mm²)

📂 PROJECT MANAGEMENT
• Save and manage multiple solar system designs
• Resume your work anytime

🔐 PREMIUM FEATURES
• Free: up to 3 calculations
• Premium: unlimited access for professionals

⚠️ DISCLAIMER
This app provides estimates only. Final installations should always be verified by a qualified professional.
Sizer helps you design solar systems faster, safer, and smarter.
Design accurate solar systems
Updated on
Oct 17, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

• Easier appliance selection with a floating Add button.
• Separate summary and editing screens.
• Newly added appliances appear at the bottom.
• Improved keyboard visibility when entering appliance details.
Content rating
Everyone
Learn more

App support

Phone number
+2347017538645
About the developer
Abisayo John Folu-Agoi
foluagoiabisayo@gmail.com
Nigeria