What Does a Public Utility Commission (PUC) Do?
A state Public Utility Commission (PUC) — called a Public Service Commission (PSC) in some states — is the government body that regulates investor-owned electric, gas, water, and telecom utilities. It approves the rates a utility can charge through formal rate cases, monitors service reliability and safety, handles customer complaints against utilities and licensed suppliers, and, in states with retail choice, licenses and oversees the competitive companies selling energy. Every state has one; exact names and powers vary.
What a PUC actually regulates
PUCs oversee "public utilities" — historically defined as companies providing an essential service to the public under a government-granted monopoly or franchise. That typically covers investor-owned electric, natural gas, water and sewer, and telecommunications companies. Municipal utilities and rural electric cooperatives are often regulated more lightly, or not at all, by the state PUC, since they already answer to a city council or member-elected board — this is one of the more common points of confusion for customers trying to figure out who to contact about a billing issue.
How a rate case works
When a regulated utility wants to change its rates, it can't simply raise them — it has to file a rate case with the PUC, laying out its costs, planned capital investments, and the return on investment it's requesting. Commission staff, consumer advocates, and other "intervenors" (which can include large industrial or commercial customers) review the filing, and the process typically includes public comment periods and sometimes formal hearings. The commission then issues an order that can approve the request as filed, approve a smaller increase, or reject parts of it. This process can take many months to over a year depending on the state and the size of the request.
Filing a complaint with your PUC
If a billing dispute or service issue can't be resolved directly with the utility or your energy supplier, most state PUCs accept formal consumer complaints through an online form or phone line on their website. The typical process: you first document your attempt to resolve it with the company, then file with the commission, which notifies the company and usually requires a written response within a set number of days. This process exists specifically to give customers formal leverage without going to court.
How rules differ from state to state
Beyond naming differences (PUC, PSC, Board of Public Utilities, and similar), the biggest practical difference between states is whether the state has deregulated any part of its energy market. In fully regulated states, the PUC approves rates for the utility that both delivers and sells the energy. In states with retail choice — Texas, Ohio, and much of the Northeast and Mid-Atlantic among them — the PUC still regulates the wires-and-pipes utility, but it also licenses and monitors the competitive suppliers customers can choose from, and typically maintains a public rate-comparison tool.
What this means for a business
Commercial and industrial customers are usually billed under different rate classes than residential customers, and those classes get set — and sometimes contested — in the same rate case process described above. Larger commercial and industrial customers, and the trade associations that represent them, frequently intervene directly in rate cases to argue for cost allocation that reflects how they actually use the grid (steady, high-volume, or off-peak load, for example). A business watching its energy costs can typically find open rate case dockets on its state PUC's website, see what a utility is requesting, and get a preview of a rate change well before it shows up on a bill.
Frequently asked questions
What is the difference between a PUC and a PSC?
Nothing functionally — they're the same kind of agency under different names. Most states call it a Public Utility Commission (PUC) or Public Service Commission (PSC); a few use other names, like Board of Public Utilities. All of them perform the same core role of regulating utility rates and service quality within their state.
How do I file a complaint with my state's PUC?
Most state PUCs post an online complaint form and a phone line on their website, and ask that you try to resolve the issue directly with your utility or supplier first. If that doesn't work, filing with the commission typically opens a formal complaint, notifies the company, and requires a written response within a set number of days.
Can a PUC deny a utility's request for a rate increase?
Yes. A rate case is a formal proceeding, not a rubber stamp — commission staff and any intervening parties can challenge specific costs in the utility's request, and the commission can approve a smaller increase than requested, or reject parts of it outright, based on the evidentiary record.
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