Related Party Transactions

CECONY provides administrative and other services to, and receives such services from, Con Edison and its other subsidiaries pursuant to cost allocation procedures approved by the NYSPSC. The costs of administrative and other services provided by CECONY to, and received by it from, Con Edison and its other subsidiaries for the years ended December 31, 2017, 2016 and 2015 were as follows:



	CECONY
(Millions of Dollars)	2017	2016	2015
Cost of services provided	$111	$108	$99
Cost of services received	64	64	60

In addition, CECONY and O&R have joint gas supply arrangements, in connection with which CECONY sold to O&R $66 million, $47 million and $54 million of natural gas for the years ended December 31, 2017, 2016 and 2015, respectively. These amounts are net of the effect of related hedging transactions.

The Utilities perform work and incur expenses on behalf of NY Transco, a company in which CET Electric has a 45.7 percent equity interest. The Utilities bill NY Transco for such work and expenses in accordance with established policies. For the year ended December 31, 2017 and 2016, the amounts billed by the Utilities to NY Transco were immaterial. In May 2016, CECONY transferred certain electric transmission projects to NY Transco. See Note U.

CECONY has storage and wheeling service contracts with Stagecoach Gas Services LLC (Stagecoach), a joint venture formed by a subsidiary of CET Gas and a subsidiary of Crestwood Equity Partners LP (Crestwood). In addition, CECONY is the replacement shipper on one of Crestwood’s firm transportation agreements with Tennessee Gas Pipeline Company LLC. From the inception of the joint venture in June 2016 through December 31, 2017, the amount of storage and wheeling services received by CECONY from Stagecoach was $49 million. In addition, the Clean Energy Businesses entered into two electricity sales agreements with Stagecoach under which the amounts received in 2017 and 2016 were immaterial.

CECONY has a 20-year transportation contract with Mountain Valley Pipeline, LLC (MVP) for 250,000 dekatherms per day of capacity. CET Gas holds a 12.5 percent equity interest in MVP. In October 2017, the Environmental Defense Fund and the Natural Resource Defense Council requested the NYSPSC to prohibit CECONY from recovering costs under its MVP contract. For the year ended December 31, 2017, CECONY incurred no costs under the contract.

CECONY had a financial electric capacity contract with Con Edison Energy for the period May 2016 through April 2017. For the years ended December 31, 2017 and 2016, Con Edison Energy's realized gains under this contract were $3 million and immaterial, respectively.

FERC has authorized CECONY through 2019 to lend funds to O&R from time to time, for periods of not more than 12 months, in amounts not to exceed $250 million outstanding at any time, at prevailing market rates. There were no outstanding loans to O&R at December 31, 2017 and 2016.