ARRA extends first-year bonus depreciation for qualifying equipment placed in service in 2009, allowing the project owner to recover the costs of capital expenditures faster than the regular depreciation schedule. Under the bonus depreciation rule, an owner of qualifying property can write off 50% of the adjusted basis of the assets (such as turbines, towers, etc.) placed in service in 2009. The remaining 50% of the adjusted basis of the property is depreciated over the regular tax depreciation schedule applicable to the property.
Benson, David, Greg Jenner, and Debra Frimerman. SHOW ME THE MONEY: The Law Of The Stimulus Package. 2009.