Looks like we use Form 3468, but yowsers, there's a lotta stuff on 3468!   When I scroll down to the Solar portion its asking me about Kilowatt capacities Ac and Dc, Im struggling understand what Im supposed to put in here. 

The contractor itemization shows installing a 6.97 kw system.

17 solar panels, each panel will be 410 kw per panel

Nothing says anything about Dc or Ac

Can anyone add any clarity to this for me?