How to Size a Solar System | 3 Steps to Choose the
What size solar system do I need? Stop guessing! Use our free solar calculator for an instant solar kit size. Or, follow our simple guide to calculate it yourself.
Read MoreSizing solar system
Learn how to size a solar system for your home with six simple steps, from estimating your energy usage to calculating your solar array size. Statistics showthat most people consume more electricity during the summer and winter, when the A/C or heat is running. Use NREL’s GHI maps to see how many sun hours you can expect to get in your location. From there, we need to add a bit of overhead to account for inefficiencies and degradation rate of the panels.
