New York City’s largest utility company–Consolidated Edison Inc.–has formed a 50/50 joint venture to purchase ownership of pipelines and storage facilities from Crestwood Equity Partners (formerly Crestwood Midstream) in the PA and NY Marcellus region. ConEdison is ponying up $975 million for assets Crestwood says are really worth $2 billion. The newly formed jv, called Stagecoach Gas Services, will continue to be operated by Crestwood and includes four natural gas storage facilities (Stagecoach, Thomas Corners, Steuben and Seneca Lake) with a combined storage capacity of approximately 41 billion cubic feet; and three natural gas pipelines (MARC I, North/South and the East Pipeline) with a combined throughput capacity of 2.96 billion cubic feet per day. Here’s the details…