Acquisitions and Dispositions (Tables)

3 Months Ended

Mar. 31, 2018

During the three months ended March 31, 2018, one of Southern Power's wholly-owned subsidiaries acquired and completed construction of the Gaskell West 1 solar facility. Acquisition-related costs were expensed as incurred and were not material.



Project Facility	Resource	Seller; Acquisition Date	Approximate Nameplate Capacity (MW)	Location	Southern Power Percentage Ownership		Actual COD	PPA Contract Period
Gaskell West 1	Solar	Recurrent Energy Development Holdings, LLC January 26, 2018	20	Kern County, CA	100% of Class B	(*)	March 2018	20 years


(*)	Southern Power owns 100% of the class B membership interests under a tax equity partnership agreement.

Schedule of Construction Projects

During the three months ended March 31, 2018, Southern Power continued construction of the projects set forth in the table below. Total aggregate construction costs, excluding the acquisition costs, are expected to be between $370 million and $415 million for the Mankato and Cactus Flats facilities. At March 31, 2018, construction costs included in CWIP related to these projects totaled $273 million. The ultimate outcome of these matters cannot be determined at this time.



Project Facility	Resource	Approximate Nameplate Capacity (MW)	Location	Actual/Expected COD	PPA Contract Period
Projects Under Construction as of March 31, 2018
Cactus Flats^(*)	Wind	148	Concho County, TX	Third quarter 2018	12-15 years
Mankato	Natural Gas	345	Mankato, MN	Second quarter 2019	20 years


(*)	In July 2017, Southern Power purchased 100% of the Cactus Flats facility and commenced construction. Upon placing the facility in service, Southern Power expects to close on a tax equity partnership agreement, subject to various customary conditions at closing, and will then own 100% of the class B membership interests.