How Much Solar Panels Are Needed To Power A House

The amount of energy your home uses over a certain timeframe say a month is measured in kilowatt hours kwh.
How much solar panels are needed to power a house. The typical homeowner will need 28 34 solar panels to cover 100 of their energy usage dependent on location and roof size. How many solar panels do i need to power my house. Gregg garrison general manager of northeast solar in hatfield ma gave some guidelines for the average homeowner regarding the number of panels to power both electrical and hot water requirements. 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.
To get these numbers we used high and low panel production ratios to calculate how many solar panels are needed on average. Compare with your consumption and costs and if it s what you are looking for then divide the power capacity by the nominal stc power of the solar panels somewhere between 350 400wp for your case. While many factors are involved in determining how many solar panels are needed to power your home there is a basic formula. With this power capacity you need to then find out how much energy your pv system will be generating and saving more accurately.
A 3kw solar system which consists of 12 panels can produce an average of 4 200 kwh per year.