GE Energy Financial Services has taken a stake in Summit Midstream Partners LLC, a developer of midstream energy infrastructure in unconventional North American basins. Financial details were not disclosed. GE Energy Financial Services' current midstream equity and debt portfolio totals $2.4 billion. It has invested in a midstream master limited partnership, gas storage assets, a liquefied natural gas regasification terminal and 40,000 miles of gas pipelines. Summit Midstream's assets include gathering, compression and dehydration facilities in the core of the Barnett Shale. It recently acquired South Piceance Basin assets in the Rockies from an Encana Corp. subsidiary (see Daily GPI, Oct. 12).