Energy Capital Partners is seeking seeking buyers for its interest in Summit Midstream Partners LP, a deal that would include a minority stake in the pipeline operator as well as ownership of its general partner, according to people familiar with the matter. The sale would also include some oil and gas gathering and processing operations in North Dakota, Colorado and Ohio owned by an affiliate of Summit Midstream, said the people, who asked not to be identified because the matter is private. Energy Capital is working with Barclays Plc to find a buyer for the assets, which could fetch at least $2 billion, one person said. If offers are too low, the firm may also consider taking the assets public. Such a listing would resemble Tallgrass Energy Partners LP’s initial public offering earlier this year of affiliate Tallgrass Energy GP, the people said. A spokesman for Barclays declined to […]