The investment tax credit is allowed section 48 of the Internal Revenue Code. This investment tax credit varies depending on the type of renewable energy project; solar, fuel cells ($1500/0.5 kW) and small wind (< 100 kW) are eligible for credit of 30% of the cost of development, with no maximum credit limit; there is a 10% credit for geothermal, microturbines (< 2 MW) and combined heat and power plants (< 50 MW). The ITC is generated at the time the qualifying facility is placed in service. Benefits are derived from the ITC, accelerated depreciation, and cash flow over a 6-8 year period.