2 sense units- do the accounts have to be different email addys?

I have read all of the posts re integrating multiple sense unit under one acct. In the meantime, I want to add a 2nd sense to a panel (has solar too). I have 2 accounts I assume I need to have them set up under different emails? I will use 2 browsers on my laptop to monitor. I do not think there is a work around for Android phones

Yes - each account / Sense monitor needs its own unique email address. The workaround for iOS or Android app is multiple devices or logging out and back in.

And you can combine data from multiple accounts fairly easily outside of Sense.