I just had 34 panels put on my roof. They have been operating for about two weeks now. I was lucky and already had a 400 amp service. But I am all electric so its a no brainer. In 15 years they will have been paid off and I will have 10 years of warranty left. And I am saving about 30% right away.
I also got lucky because SDG&E dropped the neutral to my house and so had to replace and upgrade the cables. As well as reimburse me for all the stuff in my house that stopped working.
To bad my TV was 110-240V I would have loved to upgrade it.
Good luck.