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How to Calculate Solar Panel Power of a Solar Power Generation Systems

September 01 , 2022

The solar power generation system is composed of solar panels, charge controllers, inverters and batteries. In order to enable the solar power generation systems to provide sufficient power for the load, it is necessary to reasonably select each component according to the power of the electrical appliance.

Let's take 100W output power and use it for 6 hours a day as an example to introduce the calculation method.

1. First, calculate the watt-hour consumption per day (including the loss of the inverter). if the conversion efficiency of the inverter is 90%, then when the output power is 100W, the actual output power should be 100W/90 %=111W. if it is used for 5 hours a day, the output power is 111W*5 hours=555Wh.

2. Calculation of solar panels: According to the daily effective sunshine time of 6 hours, and considering the charging efficiency and the loss during the charging process, the output power of the solar panels should be 555Wh/6h/70%=130W. Among them, 70% is the actual power used by the solar panel during the charging process.

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Balcony Mounting System

Install solar panel on balcony fence by Corigy balcony hooks

RV Mounting System

Portable easy install solar panel mounting bracket for RV or yacht

Solar Mounting Accessories

Solar mounting accessories such as end/mid clamp, cable clip, grounding items, etc.

Flat Roof Mounting System

Flat roof solar panel mounting system, such as ballast mount, east-west ballast mount, etc.

Tile Roof Mounting System

Install solar panels on tile roof by hooks and L foot etc.

Metal Roof Mounting System

Install solar panel on the metal roof by standing seam, klip-lok, L foot or other clamps.

Ground Mounting System

Mainly made by galvanized steel, anodized aluminum and ZAM materials

Carport Mounting System

Carbon Steel Solar Carport Mounting Structure

Grounding Screw

Grounding screw for ground mounting structure

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