A variety of manufacturers and experts at the PV Summit agree; solar electricity will achieve grid parity by 2012 or before.
Grid parity is the point at which photovoltaic electricity is equal to or cheaper than grid power (powered by traditional fuels) without the support of subsidies or tax rebates. This is the holy grail for the solar industry and many agree that it could come even quicker depending on the costs of natural gas.
Note that the projections given today are more aggressive than represented by the Deutsche Bank graphic, which is 2 years old.

