Calculating Power Consumption Solar Panels

If you live in an area where there are plenty of cloudy and rainy days your battery must have enough capacity to power your solar panels until the sun comes out.

Calculating power consumption solar panels. You calculate the power supplied or calculate a solar energy system output from the panel to the battery using its watts peak and exposure. 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 calculate the energy you will use over time just multiply the power consumption by the hours of intended use. R is the yield of the solar panel given by the ratio.

So for example a small portable tv is around 20w. For total load of 500 w with operational time 24 h per day calculator gives size of invertor about 555 kw. Likewise if you wanted to account for 100 of your daily kwh consumption you would need 30 solar panels 37 kwh daily usage divided by 1 24 kwh per panel. This information can be found on the data sticker that most electrical items have.

The photovoltaic pv solar panels are used in residential installations come in varying wattages from 150 watts to 370 watts per panel. Calculating your power use. Electrical power in kwp of one solar panel divided by the area of one panel. I tried to use this calculator for sizing solar panels in hybrid system for micro gsm bts but size of invertor is too big for total load of 500 w.

The solar panel yield of a pv module of 250 wp with an area of 1 6 m2 is 15 6. Please note that these calculations are based on assumed power consumption of various appliances. Don t forget to consider seasonal variations. Be aware that this nominal ratio is given for standard test conditions stc.

Wss outback grid tie w battery backup system for 12 heliene 60 cell modules. 20w tv on for 2 hours equals 40 watt hours. In the example above you would need 24 solar panels to account for 80 of your average consumption 29 6 kwh daily usage divided by 1 24 kwh per panel. The power generation capacity of a solar panel is given in watts.

To calculate total energy consumption multiply the watts by the hours of use. Thus the output for each solar panel in your array would. Radiation 1000 w m2 cell temperature 25 celcius degree wind speed 1 m s am 1 5. How much energy does a solar panel produce.

If the selected battery is rated at 12v in that case. Enter the number of each appliance in the appropriate box plus the number of hours use per day then click the calculate button at the bottom of the page. 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. 3 84 kw gridtied battery backup solar system with outback power center and 12x heliene 320 panels.

For the most accurate and personalized off grid system size calculation call our solar experts at 1 800 472 1142. Show appliance consumption table.