On Monday, the head of the EPA said he would "do away" with tax credits for the solar and wind industry. Only Congress—not the EPA--can end the solar tax credit, but instead of taking a chance that they won’t, act now.
Currently, there is a 30% federal tax credit under the solar Investment Tax Credit (ITC). This tax credit will stay at 30% through 2019. After that, it will be reduced (See graphic from Energy Sage).