Assuming solar panels always require weather sealed sheets of glass, it would be interesting to look at graphs of cost of LCD displays per Sq Meter vs year compared to graphs for plain old house windows per sq meter over the years.

Its likely it'll never be cheaper to build traditional sealed glass panels cheaper than house windows, although per sq meter it might get cheaper than televisions.

Some of the more optimistic claims outside the article seem to have very unusual assumptions about the cost of glass.