Working out solar efficiency / return on investment

Hi Marty,

As you may recall I had solar installed in March and coordinated it at my mother’s place in July. She is still getting power bills of $90 per month. I just got my first ‘bill’ and I’m $50 in credit.

However I can’t say I really have a clue how ‘efficient’ our solar is and what our return on investment is.

What’s the best way to work this out? I thought it was something that would be easy to see between the solar log in and the utility provider. What does something like Solar Analytics add on top of what’s already available to me plus of course comparing bills.


Hi @Werona

Here is a really thorough review that Jason did if Solar Analytics.

I’ll add more later.