Pipelines being driven by private equity firms, ratings agencies Published on October 2, 2016 in Pipelines being driven by private equity firms through ratings agency they now ownFull resolution (616 × 390) Next → Former federal cabinet minister and Alberta Premier Jim Prentice, whose recent work with major private equity firm Warburg Pincus has seem him become a strong proponent for multiple pipelines. (Photo: Canada2020/Flickr)