Hello everyone,
I am planning to install a small solar power system for my home and need some guidance on panel sizing. My daily energy consumption is around 20 kWh and I would like the system to cover most, if not all, of my energy needs. I live in a sunny area, so there’s good sunlight throughout the year....
Could anyone advise how to calculate the number of solar panels I would need. Also, what factors should I consider when choosing between different panel brands or types (monocrystalline vs polycrystalline). Any tips on inverters and battery storage would be really helpful as well.
I also read this topic on this site https://www.quora.com/How-do-I-choose-the-right-size-of-a-solar-panel-system-for-my-property-golang but I could not anything helpful for me.
Looking forward to your suggestions and recommendations.
Thanks in advance,
[Dianna]
To size a solar panel system for a small residential setup:
Determine energy needs: Calculate your daily energy consumption in kWh by reviewing your electricity bill.
Peak sunlight hours: Find out the average peak sunlight hours per day in your location (typically 4-6 hours).
Panel wattage: Choose solar panels with suitable wattage (e.g., 250-350W per panel).
System size: Divide your daily energy consumption by the daily sunlight hours and panel wattage to estimate the number of panels needed.
Add buffer: Consider a buffer of 20-25% for inefficiencies, weather, and system degradation.
Example: If you use 10 kWh/day, live in an area with 5 hours of sunlight, and have 300W panels, you’d need around 7 panels (10 kWh ÷ (5 hours × 0.3 kW)).
Consult with a local installer for precise calculations and guidance!