The most effective incentive available for commercial solar is the 26% federal investment tax credit (ITC), which allows businesses to deduct 26% of the overall system cost from their taxes. California State and Federal Bonus Depreciation is accessible and can help shorten payback periods. An incentive specifically for energy storage systems called the Self-generation incentive program (SGIP) has limited funds, but can still help add value to a commercial solar system by adding an energy storage system for better performance.