Hello Good Solar Guide reader!

• If you are looking for my detailed online solar savings calculator then please click here.
• If you would like to go crazy with an offline Excel Spreadsheet Calculator tht includes MIRR calculations it is available to download here.
• Otherwise you can find the meter reading calculator below…

This is the calculator that works out your average daily usage and your nighttime usage based on the four meter readings that you take in Step 2 (page 77).

Put your readings in here to see the results then write them in your book. Or if you don't want to deface your beautiful pages, add them to the worksheet.