(1) Adopt rules pursuant to chapter 91 necessary to effectuate the purposes of this part[.];

(2) Conduct investigations to secure information useful in lawful administration of any provision of this part[.];

(3) Assist, advise, and cooperate with federal, state, and local agencies and officials to protect and promote the interests of the consumer in the public utilities field[.];

(4) Study the operation of laws affecting all consumers, including small businesses, of utility services and recommend to the governor and the legislature new laws and amendments of laws in the consumers' interest in the public utilities field[.];

(5) Organize and hold conferences on problems affecting consumers of utility services[.];

(6) Perform such other acts as may be incidental to the exercise of the functions, powers, and duties set forth in this section[.];

(7) Represent the interests of consumers of utility services before any state or federal agency or instrumentality having jurisdiction over matters which affect those interests[.]; and

(8) Consider the long-term benefits of renewable resources in the consumer advocate's role as consumer advocate."