Exhibit 99.1 Credit Agreement, dated as of March 28, 2012, by and among Telesat Holdings, Inc., Telesat Canada, Telesat LLC, the guarantors party thereto, JP Morgan Chase Bank, N.A., as administrative agent, and the other lenders party thereto (incorporated by reference to Exhibit 4.1 in the Form 6-K filed by Telesat Canada on March 29, 2012)