Related Party Transactions

3 Months Ended

Mar. 31, 2015

Related Party Transaction [Line Items]

Related Party Transactions Disclosure [Text Block]

Related Party Transactions

OGE Energy charged operating costs to OG&E of $31.2 million and $32.5 million during the three months endedMarch 31, 2015 and 2014, respectively. OGE Energy charges operating costs to OG&E and Enable based on several factors. Operating costs directly related to OG&E and/or Enable are assigned as such.  Operating costs incurred for the benefit of OG&E and Enable are allocated either as overhead based primarily on labor costs or using the "Distrigas" method.

OG&E entered into a new contract with Enable to provide transportation services effective May 1, 2014 which eliminated the natural gas storage services. This transportation agreement grants Enable the responsibility of delivering natural gas to OG&E’s generating facilities and performing an imbalance service. With this imbalance service, in accordance with the cash-out provision of the contract, OG&E purchases gas from Enable when Enable’s deliveries exceed OG&E’s pipeline receipts. Enable purchases gas from OG&E when OG&E’s pipeline receipts exceed Enable’s deliveries.The following table summarizes related party transactions between OG&E and its affiliate, Enable, during thethree months endedMarch 31, 2015 and 2014.

	Three Months Ended
	March 31,
(In millions)	2015		2014
Operating Revenues:
Electricity to power electric compression assets	$	3.1	$	2.9
Cost of Sales:
Natural gas transportation services	$	8.8	$	8.7
Natural gas storage services	—		3.3
Natural gas purchases	2.5		5.0

During both the three months endedMarch 31, 2015 and 2014, OG&E declared dividends to OGE Energy of $30.0 million.