Solar set to install tomorrow. Very excited! I am aware that technically the solar panels are not fully operational and able to generate electricity until the utility (PG&E here) does their part and gives the OK to connect to the grid. I understand this can take weeks - sometimes a month or more. But I've also heard of solar installers who will (wink wink, nod nod) say they are going to run a long "load test" or "burn in" or some such (forgot the actual phrase) and leave the system post-install in a configuration where the panels are immediately generating electricity for the house that you can use but the excess isn't able to be sold back to the utility/grid. My questions: 1) Is what I have described above somewhat common? Or pretty rare that an installer will do this for you so your panels don't sit completely useless for weeks while waiting for the utility interconnect or whatever? 2) Do people know if Tesla Solar/SolarCity in particular do or don't typically do this for new installs? 3) Is it crass to somehow ask or hint to the installer that you'd like this if they don't offer it proactively? Like, "This is a big system. Can we run some tests for a while to make sure it is generating the right amount of electricity?" New to solar, and install is tomorrow so I appreciate any tips. Thanks!