CALGARY, ALTA. – TC Energy Corp.’s plan to shore up its balance sheet with $3 billion or more in asset sales took a step forward Monday after a deal to sell a U.S. pipeline.  The Calgary-based company and its partner said they are selling the Portland Natural Gas Transmission System for US$1.14 billion to BlackRock, … Continue reading TC Energy selling Portland Natural Gas Transmission System for US$1.14 billion