Retrofit Battery Storage Sizing & Payback Estimator (for preexisting solar systems)

Welcome to Solar Choice’s solar & storage sizing estimator tool. Please follow the instructions below to get an idea of what size battery storage system would work for your existing solar PV system.

Remember that all results are indicative only!

(Go back to solar & storage calculator home page.)

About using this calculator

  • Use the arrows on your keyboard to navigate from cell to cell
  • Only enter values into the WHITE CELLS. Some cells will allow you to enter a number, other cells will have a pull-down menu with two or more options.
  • If you accidentally change something in a non-white cell, you’ll need to refresh the page and start over
  • Results will update automatically after you’ve entered values into the white cells