SunPower announced on June 23rd that it has produced, in a full-scale factory setting, a silicon PV cell that can convert 24.2% of the sunlight that hits it into electricity. This represents a record in the silicon PV manufacturing space, and continues SunPower's efficiency lead among manufacturers. SunPower expects to have panels on the market by year end 2010 that can convert, at a cell level, with up to 23.4% efficiency.