[ChiMark]

How many of these cells will it take to power my 8500 BTU
air cinditioner?

I live in the mid west sun only appear every now and then.

[musicman]

"How many of these cells will it take to power my 8500 BTU air cinditioner?"

"I live in the mid west sun only appear every now and then."

Just one.

(...but it will probably have to be the size of the WHOLE mid-west...)

[Vanders9]

Solar power is, and always will be, a supplement to existing energy sources. As long as that limitation is realised, an increase to 28% efficiency is great news. It isnt going to solve the energy crisis, not by any means, but it might ease it a bit.