After approximately 1 year, the small business photovoltaic (PV) portion of the Pennsylvania Sunshine rebate program is closed. As of April 30, 2010, the fourth and final incentive step had received applications totaling more than 11 MW, more than double the amount (5 MW) specified in the step. The first three capacity steps totaled 30 MW. Incentives under the Pennsylvania Sunshine program are still available for residential and small business solar-thermal installations, and to residential PV installations.
Source: Uni-Solar news letter 6/17/2010