Tennessee Valley Authority Timeline

In Ashwander v. Tennessee Valley Authority, the United States Supreme Court ruled in 1936 that TVA was constitutional.

Image source: Ashwander v. Tennessee Valley Authority

After political opposition regrouped, river lobbyists and conservative members of Congress expanded the Army Corps of Engineers' flood-control program in 1936, challenging the New Dealers' plans for additional federal utility corporations.

The Supreme Court again upheld the TVA Act in Tennessee Electric Power Company v. TVA, reinforcing the authority's legal position against private utility challenges.

New Dealers hoped to establish numerous federal utility corporations across the United States, but lobbyists, 1940 Republican presidential nominee Wendell Willkie, and the conservative coalition in Congress defeated those broader plans.

After 1945, Democrats promoted TVA as a model for countries in the developing world. Conservative critics responded that it was centralized, technocratic, and insensitive to local residents.

President Dwight D. Eisenhower referred to TVA as an example of “creeping socialism” in 1953, reflecting continuing conservative opposition to the federal corporation.

Elia Kazan's 1960 film Wild River depicts a family forced to relocate from ancestral land because TVA plans to construct a dam that will flood it.

Image source: Wild River (film)

An official was fired in 1962 after publicly referring to TVA, a major customer for General Electric turbines, as one of the problems of big government.

Senator and presidential candidate Barry Goldwater was quoted as saying that TVA should be sold. His comments about privatizing parts of the authority were later used in a 1964 campaign advertisement for Lyndon B. Johnson.

Image source: Barry Goldwater

James Dickey's 1970 novel Deliverance and its 1972 film adaptation follow four Atlanta businessmen canoeing on a river being impounded by an electric utility, echoing TVA's controversial hydroelectric projects.

Image source: Deliverance

The snail darter, a small ray-finned fish, was discovered in the Little Tennessee River in 1973 and listed as an endangered species two years later. Its protection delayed the Tellico Dam project.

Image source: Snail darter

In Tennessee Valley Authority v. Hill, the Supreme Court ruled in favor of protecting the endangered snail darter under the Endangered Species Act, affecting the Tellico Dam project.

Comic book writer and artist Walt Simonson attributed the name of Marvel's fictional Time Variance Authority to TVA. The organization appeared in The Mighty Thor in the 1980s and later in the Marvel Cinematic Universe series Loki and the 2024 film Deadpool & Wolverine.

Image source: Time Variance Authority

The TVA Board of Directors broke with previous practice in 1981 and took a hard line against white-collar unions during contract negotiations.

The 1984 Mark Rydell film The River portrays an East Tennessee family facing the loss of its ancestral farm when a nearby river is inundated by an electric utility.

Image source: The River (1984 film)

TVA reached an out-of-court settlement in 1987 in a Title VII sex-discrimination case arising from contract changes that disproportionately affected women in one pay grade. The agency paid $5 million and denied wrongdoing.

Initially part of TVA, the TVA Police was authorized as a federal law-enforcement agency in 1994.

In the 2000 film O Brother, Where Art Thou?, the protagonist's family home is flooded by a reservoir constructed by TVA.

Image source: O Brother, Where Art Thou?

An earthen dike at TVA's Kingston Fossil Plant failed on December 22, 2008, releasing 1.1 billion U.S. gallons of coal ash slurry across 300 acres and into two Tennessee River tributaries. Cleanup finished in 2015 at a cost exceeding $1 billion.

Image source: Kingston Fossil Plant coal fly ash slurry spill

A 2009 AECOM report found that multiple inadequate design factors in the ash pond contributed to the Kingston spill, which was described as the largest industrial spill in United States history.

TVA reached an agreement with the Environmental Protection Agency, four states, and three environmental groups in April 2011 to reduce pollution and carbon emissions. The agreement required retiring at least 18 of 59 coal-fired units and installing or adopting cleaner technology at others.

Jason Isbell released a solo cover of “TVA” in 2012, adding a musical reference to the authority's regional history.

Image source: Jason Isbell

Under the 2011 pollution agreement, TVA retired John Sevier in 2012, Shawnee Unit 10 in 2014, Widows Creek in 2015, Colbert in 2016, Johnsonville and Paradise Units 1 and 2 in 2017, Allen in 2018, and Paradise Unit 3 in 2020.

The U.S. District Court for the Eastern District of Tennessee found TVA liable for the Kingston coal ash disaster in August 2012.

In November 2018, a federal jury ruled that the Kingston spill contractor had failed to properly inform workers about coal ash exposure dangers and failed to provide necessary personal protective equipment.

Despite President Donald Trump's opposition, the TVA board voted in February 2019 to close the aging Paradise Unit 3 and Bull Run coal plants because of continuing economic pressure on coal.

President Donald Trump fired the TVA chairman and another board member on August 3, 2020, citing their compensation and the outsourcing of 200 high-tech jobs.

TVA announced plans in April 2021 to completely phase out coal power by 2035.

TVA CEO Jeff Lyash's compensation package of $10.5 million in 2024 generated substantial criticism.

Expecting electricity demand in the Tennessee Valley to continue rising, TVA began constructing nuclear power plants in 1966.

Between 1970 and 1974, TVA set out to construct 17 nuclear reactors, based on projections of continued rapid growth in electricity demand.

Energy crises in 1973 and 1979, together with accelerating fuel costs, produced major changes in the Tennessee Valley and national economies during the 1970s.

Image source: 1970s energy crisis

Browns Ferry Unit 1, TVA's first nuclear reactor, began commercial operation on August 1, 1974.

Image source: Browns Ferry Nuclear Plant

The TVA board voted in 1981 to defer the Phipps Bend plant and slow construction on other projects as demand projections and financial conditions changed.

Image source: Phipps Bend Nuclear Plant

TVA cancelled the Hartsville and Yellow Creek plants in 1984 and Bellefonte in 1988 as its nuclear construction program was scaled back.

Citing safety concerns, TVA indefinitely shut down all five of its operating nuclear reactors in 1985.

The two Sequoyah nuclear reactors returned to service three years after TVA shut down its five operating reactors for safety concerns.

Image source: Sequoyah Nuclear Plant

Marvin Travis Runyon became TVA chairman in January 1988. The former automotive executive pledged to stabilize the agency financially through cost reductions and efficiency improvements.

Restructuring under Marvin Runyon produced cumulative savings and efficiency improvements of $1.8 billion, cut operating costs by nearly $800 million annually, and reduced the workforce by more than half while increasing generating capacity.

Browns Ferry's three reactors returned to service in 1991, 1995, and 2007 after being shut down in 1985.

Work resumed on Watts Bar Unit 1 in 1992, and the reactor began operation in May 1996. It became the last commercial nuclear reactor completed in the United States during the 20th century.

Image source: Watts Bar Nuclear Plant

TVA began work in 2002 to restart Browns Ferry Unit 1, the last of its reactors mothballed in 1985. The unit returned to service in 2007.

TVA announced plans in 2005 to construct an Advanced Pressurized Water Reactor at Bellefonte, Alabama. It filed applications in November 2007, but the proposal was gradually reduced and effectively voided by 2016.

Image source: Bellefonte Nuclear Plant

Construction resumed on Watts Bar Unit 2 in October 2007. The unit began commercial operation in October 2016 and became the first new nuclear reactor to enter service in the United States in the 21st century.

In early February 2020, TVA awarded Framatome several multi-million-dollar contracts for work across its nuclear reactor fleet.

Image source: Framatome

Seeking net-zero carbon emissions by 2050, the TVA Board approved an advanced nuclear technology approach in February 2022. The New Nuclear Program included an estimated $200 million investment.

Image source: Small modular reactor

In December 2025, the United States Department of Energy allocated TVA a $400 million grant to assist deployment of advanced light-water small modular reactors. TVA planned to build a BWRX-300 SMR.