[redwitch]

I don't think double panes are as necessary here as they are up north or even out west -- the weather really is more severe in most parts of the country. The biggest minus would be if you lived near a golf course (and the PVs are situated in those locations) and had balls hit your window -- much better to crack one pane than break the entire window. If you happen to buy a house with single panes (still pretty rare here, from what I've seen), I think you could negotiate having double panes installed into the price (don't think any of the new homes have single panes).