How do I determine the right size of a solar system?

Learn how to determine the right size of a solar system for your home by considering factors like energy consumption, location, and roof orientation. Use our simple calculator to estimate your solar panel needs.

How do I choose the right Solar System for my home?

By considering your energy consumption, location, and roof orientation, and using a simple calculator like the one above as a starting point, you can make an informed decision about the right solar system for your home.

Can I offset 100% of my energy needs with solar?

Most grid-tie homeowners choose to offset 100% of their energy needs with solar. But it is also possible to start with a smaller system for partial offset, and then expand down the line as the budget allows for it. If partial offset is your goal, you can account for that here.

How much headroom should a solar array have?

20% is a good amount of headroom to account for inefficiencies. Multiply your solar array size by 1.2 (120%) to account for this: 6 kW x 1.2 = 7.2 kW solar array Step 5: Full or Partial Offset?

How do I set up solar panels?

Select the nominal voltage of your battery bank. Select the lowest temperature that you expect your solar panels to be exposed to in daylight. Enter the number of solar panels wired in series. If you have multiple strings in parallel, enter the number of series-wired solar panels in each string.

How many kWh does a solar panel use a day?

Next, divide your monthly kWh usage by 30 to estimate your average daily kWh usage. The average American home uses about 900 kWh per month, so we’ll use that in our example: 900 kWh / 30 days = 30 kWh per day Sunlight availability affects how much energy your solar panels generate.