This one really knocked our socks off. The last time we checked in on First Solar was almost exactly one year ago, when the company announced a world solar cell efficiency record of 18.7 percent for its thin film solar technology. Now it has crushed its own record, cracking the 20 percent barrier with a new world record of 20.4 percent.

This one really knocked our socks off. The last time we checked in on First Solar was almost exactly one year ago, when the company announced a world solar cell efficiency record of 18.7 percent for its thin film solar technology. Now it has crushed its own record, cracking the 20 percent barrier with a new world record of 20.4 percent.