Wis. Stat. § 199.105: Prohibited acts.

(1) No person may interfere or threaten to interfere with or cause any interference with the utility service of or penalize or threaten to penalize or cause to be penalized any person who contributes to the corporation or participates in any of its activities, in retribution for such contribution or participation.

(2) No person may act with intent to prevent, interfere with or hinder the activities permitted under s. 199.10.

(3) A person who violates this section may be fined not more than $1,000. Each such violation shall constitute a separate and continuing violation of this chapter. A person who knowingly and willfully violates this section may be imprisoned not more than 6 months.