The Arizona Corporation Commission is the Public Utilities Commission of the State of Arizona, established by Article 15 of the Arizona Constitution. Arizona is one of only fourteen states with elected commissioners. The Arizona Constitution explicitly calls for an elected commission, as opposed to a governor-appointed commission, which is the standard in most states, because its drafters feared that governors would appoint industry-friendly officials.

The original Arizona State Constitution of 1912 established the Commission with three members serving staggered six year terms with no term limits. In 2000, Arizona voters approved Proposition 103, which expanded the Commission to five members, shortened the terms to four years, and prohibited Commissioners from serving more than two consecutive terms. Commissioners may serve additional terms, but they must be out of office for at least one full term before they become eligible again. In the event of a vacancy, the governor may appoint a new Commissioner to fill the vacancy until the next general election.

Due to its separation from the executive branch, the commission is sometimes referred to as the "fourth branch of government." However, this designation is unofficial, as Article III of the Arizona Constitution states that "[t]he powers of the government of the state of Arizona shall be divided into three separate departments, the legislative, the executive, and the judicial".Ariz. Const. Art. III; see also, Johnson Utilities, LLC v. Arizona Corporation Commission, 468 P.3d 1176, 1195 (Ariz. 2020) (Bollick, J., concurring and dissenting).

The commission has five members. , the commissioners are Lea Márquez Peterson, Nick Myers, Rene Lopez, Kevin Thompson, and Rachel Walden.

Responsibilities and duties The commission's scope of responsibility is generally larger than most Public Utility Commission in other states. Some of its major duties include regulating public utility companies, regulating the incorporation of businesses and organizations, securities regulation, and railroad/pipeline safety.

In January 2018, Former Speaker of the Arizona House of Representatives and Commissioner Andy Tobin proposed an energy plan that includes an 80 percent clean energy target and a 3,000 MW energy storage procurement target, which would surpass California and New York.

Leadership Each term, the Commission elects one of the Commissioners as the Chairperson. As of January 2025, the current Chairperson of the Arizona Corporation Commission is Kevin Thompson. The previous chairperson was Jim O'Connor.

Controversies Prior to January 5, 2016, the chairman was Susan Bitter Smith. She joined the commission in 2013. As of 2015, the Arizona Attorney General’s office began investigating a complaint that seeks to have Bitter Smith removed from her position due to conflict-of-interest issues. As chair of the commission, Bitter Smith is in charge of regulating the telecommunications industry. However, at the same time, she was a lobbyist for the industry, running her own public relations firm called Technical Solutions. Until recently, the company described itself on its website as a “full service government affairs company including direct federal, state and local lobbying activities with agencies ranging from the Federal Communications Commission, to the Arizona Corporation Commission, to the Arizona Legislature and Arizona municipalities.” The description from Technical Solution's website was removed after the Arizona Attorney General began investigating the complaint against her.

An attorney with the Arizona Corporation Commission, Eric Hill, quit his position in June 2016 and began a new job representing rooftop solar companies such as SolarCity at the Scottsdale, Arizona-based Rose Law Group. The law firm represented solar companies in legal battles between solar companies and the Arizona Public Services Company (APS), which is the largest and oldest electric company in Arizona. The legal battles were about net metering; the two sides argued over how much electric rates should be and how much refunds should be to homeowners running rooftop solar panels.

Hearing Division The Hearing Division, under the supervision of the Chief Hearing Officer, conducts evidentiary hearings and issues recommended orders for the Commissioners' consideration and approval. Chief Hearing Officers, since creation of the position, have been: 1974–1975: Lawrence J. Evans, Jr. 1975–1979: Andrew Wilson Bettwy 1979–1981: David Kennedy 1982–1987: Thomas Mumaw 1987–1992: Beth Ann Burns 1992–2000: Jerry Rudibaugh 2000–?: Jane Rodda (Acting) 2009–2015: Lyn Farmer 2015–present: Dwight Nodes

Regulation of public utilities As part of its role in regulating public utilities, the Commission established a Renewable Energy Standard and Tariff (REST) in 2006. To provide public information related to implementation of the REST, the Commission together with the regulated electric utilities in Arizona have developed a website called Arizona Goes Solar. The authority for the Commission to establish a renewable energy standard has been challenged several times in court by the Goldwater Institute (see Miller v. Arizona Corporation Commission). The standard was most recently upheld by the Arizona Court of Appeals in April 2011.

Past Commissioners +1912-2000: Three Member CommissionElection YearSeat 1Seat 2Seat 31911 †W. P. Geary (D)A. W. Cole (D)*** F. A. Jones (D)***1914F. A. Jones (D)1916Amos A. Betts (D)1918David F. Johnson (D)1920Loren Vaughn (D)1922Amos A. Betts (D)1924W. D. Claypool (D)1926Loren Vaughn (D)1928Amos A. Betts (D)1930Charles R. Howe (D)1932Wilson T. Wright (D)1934W. M. Cox (D)1936Amos A. Betts (D)1938Wilson T. Wright (D)1940William Petersen (D)1942 Amos A. Betts (D)*1944Wilson T. Wright (D)1946Yale McFate (D) **William T. Brooks (D)1948Mit Sims (D)1950Wilson T. Wright (D)1952William T. Brooks (D)*1954Mit Sims (D)*John H. Barry (D)**1956 William T. Brooks (D)1958George F. Senner Jr. (D)**A. P. "Jack" Buzard (D)1960George F. Senner Jr. (D)*1962E. T. Williams (D)1964Milton J. Husky (D)**Dick Herbert (D)1966Milton J. Husky (D)*1968Charles H. Garland (R)1970Russell Williams (R)**Al Faron (R)1972Russell Williams (R)*1974Ernest Garfield (R)**Bud Tims (R)1976Jim Weeks (D)1978Stan Akers (R)*1980Diane McCarthy (R)**Brian Donnely (R)*1982Richard Kimball (D)*1984Marcia Weeks (D)Renz Jenings (D)**1986Dale Morgan (R)**Renz Jenings (D)1988Dale Morgan (R)1990Marcia Weeks (D)1992Renz Jenings (D)1994Carl Kunasek (R)1996Jim Irvin (R)1998Tony West (R)*2000Marc Spitzer (R)Bill Mundel (R)** +2002–Present: Five Member CommissionElection YearSeat 1Seat 2Seat 3Seat 4Seat 52002Jim Irvin (R)*Marc Spitzer (R)Bill Mundel (R)**Jeff Hatch-Miller (R)****Mike Gleason (R)****2004Kris Mayes (R)**Jeff Hatch-Miller (R)Bill Mundel (R)Mike Gleason (R)2006Kris Mayes (R)Gary Pierce (R)2008Paul Newman (D)Sandra Kennedy (D)Bob Stump (R)2010Brenda Burns (R)Gary Pierce (R)2012Bob Stump (R)Robert Burns (R)Susan Bitter Smith (R)2014Doug Little (R)Tom Forese (R)2016Robert Burns (R)Andy Tobin (R)Boyd Dunn (R)2018Sandra Kennedy (D)Justin Olson (R)2020Anna Tovar (D)Lea Márquez Peterson (R)Jim O'Connor (R)2022Kevin Thompson (R)Nick Myers (R)2024Rachel Walden (R)Rene Lopez (R)Lea Márquez Peterson (R)2026 - - Notes: † = the first group of Commissioners were elected in the 1911 election, shortly before Arizona was officially admitted into the union * = Left office before completing term, requiring a special election to fill the vacancy ** = Elected to a partial term in a special election *** = Elected to shortened terms to begin the staggering of terms for the 3-member Commission **** = Elected to 2-year term to begin staggering of terms for the 5-member Commission - seat numbers are not formal designations, but are included to make the history easier to read - when multiple Commissioners are elected to full terms in the same election (2002–present), the informal seat order has been determined in the order of the total votes received -this list only includes the winners of regular and special elections; it does not include Commissioners appointed to fill a vacancy until the next election

Current Commissioners Current Corporation Commissioners are Lea Márquez Peterson (R), Nick Myers (R), Rene Lopez (R), Kevin Thompson (R) (Chair), and Rachel Walden (R).

NameSinceNext ElectionParty2028Republican (appointed)2028 (term limited)Republican2026Republican2026Republican2028Republican

See also List of company registers

References

External links