Calculate Solar Panels Needed

How to calculate how many solar power panels are needed for a whole house daily energy requirements.

Calculate solar panels needed.

You probably consume more electricity during certain months of the. You can calculate how many solar panels you need by multiplying your household s hourly energy requirement by the peak sunlight hours for your area and dividing that by a panel s wattage. 6000 divided by 200 equals 30 panels. To do this use an online solar calculator such as.

The average system size in the u s. How do i calculate how many solar panels i need. Once you know the peak sun hours estimating the number of solar panels needed for 1 000 kwh is simple. So to install a 6 kw solar array which will produce 1000 kwh per month in 5 5 hours of direct sunlight will require me to buy twenty 300 watt solar panels.

Calculate your average electricity use per day in watts using your electric bill for december. The system may lose stored. Use a low wattage 150w and high wattage 370w example to establish a range ex. If you don t want to buy 300 watt panels then recalculate using 250 watts or 200 watts.

The solar panels selected should be sufficient to recharge the battery. Is 5kw 5000 watts so you can use that as a benchmark if you re unclear on what your power needs will be. Other factors can determine solar panel effectiveness such as roof direction shade or the climate where you live. To calculate the solar electricity that needs to be generated you need to know the amount of energy that can be stored in the solar pv system s rechargeable battery.

Calculate your daily kwh usage. The key is to match the recharging energy requirement to the solar panel and the charge controller dc output. You can find out how many solar panels your home needs by using our solar calculator. You must simply divide the average daily kwh by the peak sun hours assuming a 30 day month an electricity generation of 1 000 kwh is equivalent to 33 33 kwh per day.

In order to calculate the below data we averaged annual kwh production in the top 12 solar states and assumed standard 250 watt panels in order to calculate how many panels you would need. The first step is calculating the kilowatts needed. The reality is that most summer days give about 15 hours of sunlight and winter you get about 4 5 hours of sunlight. Find out the average hours of sunlight per day in your area.

Based on a ten hour day of light the calculation is simple. Next you can estimate your average daily kwh usage by dividing your monthly usage by 30. Now calculate what size solar panel you will need. To sustain your entire house you need to average your daily use of electricity.

17 42 panels to generate 11 000 kwh year. 1 000 watt hours 10 hours sunlight 100 watt solar panel.