Constellation Energy Group Inc. has scrapped a plan to borrow $7.5 billion with guarantees to build a nuclear reactor with France’s Electricite de France SA (EDF) in Maryland. The two companies’ joint venture, UniStar Nuclear Energy, needed around $7.5 billion in U.S. government loan guarantees, but decided that the costs were too high and too risky for Constellation. "We no longer see a timely path to reaching a workable set of terms and conditions," Constellation said in a recent statement. The project was planned for a nuclear reactor in Calvert County, Md., the Baltimore-based energy firm said. Analysts say that the move limits EDF as its latest plans to expand into the United States have been put on hold.