5 cents per kWh is claimed by a new company that combines extreme solar concentrators with hardy solar panels. To market next year!
solar concentrators

Solar Power goes to Extremes for 5 cents per kiloWatt-hour (kWh)
(via greenchemistry.wordpress.com)
Submitted by chemrat on Sun, 2008-05-11 19:09. | Tags: technology | cheap energy | clean energy | cleantech | solar concentrators | solar energy | Solar Panels | solar power