Solar Energy Kwh Calculator

Please have a look at your average annual consumption number in kwh which you wrote down from the previous page.

Solar energy kwh calculator. 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. Thus the output for each solar panel in your array would. Or in massachusetts where electricity costs 20 kwh and a kw of solar panels makes about 1 500 kwh per year the panels save you 1 170 per year. 5 hours x 290 watts an example wattage of a premium solar panel 1 450 watts hours or roughly 1 5 kilowatt hours kwh.

Calculators that use kilowatt hours are more accurate because they consider your exact energy needs. Our solar calculator can estimate the number of panels needed for your home. Most states have a solar production ratio of 1 3 to 1 6 which means an 8kw system produces 30 more energy or 10 600 kwh annually on average. It allows homeowners small building owners installers and manufacturers to easily develop estimates of the performance of potential pv installations.

Then find that the los angeles area lies within the 1 900 number on the map so the calculation for a 5 kw system would be. How much energy does a solar panel produce. A typical american home will need 14 36 solar panels to cover their power bill and at least 227 square feet of rooftop space to accommodate the solar panels. The amount of energy that solar panels can absorb and then produce is measured in kilowatts kw.

The amount of energy your home uses over a certain timeframe say a month is measured in kilowatt hours kwh. The tool works by taking your average monthly energy usage in kilowatt hours kwh. So now that we know you need to produce about 6kw of ac output we can work backwards to figure out how many solar panels you need. 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.

That said there is a simple equation to calculate the amount of kilowatt hours kwh your solar panel system will produce. 5 kw x 1900 kwh kw x 78 output x 25 or 1 850 per year. To calculate how many solar panels you need look at your annual kwh kilowatt hours usage on your utility bills and referenced the table and map below. Solar panels produce direct current dc and your home runs on alternating current ac.

How to use a calculator to calculate how many solar panels you need. 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 pr performance ratio coefficient for losses range between 0 5 and 0 9 default value 0 75.