Tex. Util. Code § 164.002

The exercise by a political subdivision of the authority granted by this chapter, including the exercise of the power to issue bonds, notes, or other obligations to accomplish the purposes of this chapter, and the performance of an agreement entered into under this chapter are considered to be additional public purposes of the political subdivision, without regard to any express or implied limitation on the authority or purposes of the political subdivision under any other general or special law or charter provision.