Endangered Species Compliance and Transparency Act of 2010 - Requires the Administrator of each of the Bonneville Power Administration, the Western Area Power Administration, the Southwestern Power Administration, and the Southeastern Power Administration to: (1) include in monthly billing statements sent to customers estimates of each customer's share of such Administration's direct and indirect costs for compliance with the Endangered Species Act of 1973; and (2) submit an annual report estimating such costs (on a project-by-project basis for the Western Area Power Administration and on a system-wide basis for the other Administrations) to the House Committee on Natural Resources and the Senate Committee on Environment and Public Works.