I think where you benefit is you do not use much electricity in the house where my house is non stop all day long. The agreement I had with my family was that their lifestyle does not change and I kind of get that even though I am constantly turning lights off and air conditioners when no one is even around.
I think it is great that what you generate you can sell back to the grid and subsidize your winter use with credit built up. I think we all want to generate more power, but this is also weather related and not necessarily having more equipment. I am looking forward to one of these days coming back to Europe and going large seeing if I can go off the grid and also sell back to the power companies.
We don't have a/c so we could run all day off the battery most days. It helps that all the lights are low energy now. The situation will vary around the world, but solar could benefit most who can get it. As I said to bozz we are on the latitude of Calgary, but will not get as cold as them.
I see that places like Pakistan are buying a lot of solar panels to get reliable power as their grid is not great. It is the fastest growing source of power just about everywhere and keeps getting cheaper.