Solar Panel Power Output Equation

Btw 5 5kwh m 2 day is excellent solar conditions.

Solar panel power output equation. The available solar radiation e ma varies depending on the time of the year and weather conditions. Nominal rated maximum kw p power out of a solar array of n modules each with maximum power of wp at stc is given by. For the sake of example if you are getting 5 hours of direct sunlight per day in a sunny state like california you can calculate your solar panel output this way. Here s a simple formula for calculating your solar panel s power output.

Under stc a 250 watt panel produces 250 watts of electricity when the sunlight or solar irradiance on the panel is 1000 watts per square meter and the panel is operating at 25 c. E a r h pr. 5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh. To get your average usage preferably add up your last 12 months usage and divide by 12.

Your solar panel would provide just 3600 x 6 21600 watts of average power whereas the requirement is 36000 watts. However i would expect a 15 250wp panel to be 1 6m 2 and not 1m 2 as you say in the comment. Peak nominal power based on 1 kw m 2 radiation at stc. Your battery ah rating is 250 x 6 1500 ah so it can be comfortably discharged at 150amp rate that s ok so the battery specs is fine.

The solar intensity from the sun s i over a given area at the surface of the earth is approximately 1 000 watts m 2. The global formula to estimate the electricity generated in output of a photovoltaic system is. So a 7 53 kw system 7530 watts and a 250 watt panel 250 kw. The stc measure the solar panel s energy output using common conditions of light exposure orientation and panel temperature.

Anyway the answer will be 1 375wh panel day. This calculator may come in handy when you buy solar panel s for your rv vehicle boat camper or home solar system and you want to get a real. E energy kwh a total solar panel area m2 r solar panel yield or efficiency h annual average solar radiation on tilted panels shadings not included. Solar panel watts x average hours of sunlight x 75 daily watt hours as an example let s say you have 250 watt solar panels and live in a place where you get 5 hours of sunlight per day.

For a 3 6kva load the inverter operating at 24v would require 3600 24 150 amps. This solar panel output calculator helps you estimate the real daily energy a k a. Use a ruler to measure the active area a of your solar cell see photo below. First calculate the solar power arriving at the solar cell by multiplying the intensity of the sun by the area of the solar cell.

Note the efficiency of 15 is already accounted for in the nameplate rating.