Opower interview questions

Incredibly drawn out, unpleasant, almost combative process. Left a very bad taste in my mouth. I would not recommend this company to friends or colleagues (including at utility co's...). They put me through at least 6 rounds of interviews, including an all-day round of interviews at their headquarters. To their credit, they paid for my travel and hotel. To their discredit, they asked very strange questions that were not germane to the job (i.e. about my childhood). They came across as disinterested and rude. They claim to be very interested in culture fit but then discredit any job applicants who come from an environmental/energy efficiency background in favor of pretty much anyone else (especially management consulting).