RSA 203:8 Powers of Authority.

An authority shall constitute a public body corporate and politic, exercising public and essential governmental functions, and having all the powers necessary or convenient to carry out and effectuate the purposes and provisions of this chapter, including the following powers in addition to others herein granted:
I. To sue and to be sued; to have a seal and to alter the same at pleasure; to have perpetual succession; to make and execute contracts and other instruments necessary or convenient to the exercise of the powers of the authority; and to make and from time to time amend and repeal bylaws, rules and regulations, not inconsistent with this chapter, to carry into effect the powers and purposes of the authority.
II. Within its area of operation: to prepare, carry out