Government Incentive Programs Increased the Number of Commercial Solar PV Adoptions (image) American Institute of Physics Share Print E-Mail Caption Government incentive programs -- such as the investment tax credit (ITC) and California Solar Initiative (CSI -- increased the number of commercial solar PV adoptions. Credit Wang, Yu and Johnson Usage Restrictions This image may be used only with appropriate credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.