A federal appeals court has cleared the way for the Tennessee Valley Authority to keep building a $2.5 billion natural gas plant in Tennessee, blocking an environmental challenge that risked a massive cost spike for ratepayers and paychecks for roughly 2,000 union workers.
The U.S. Court of Appeals for the Sixth Circuit granted TVA a stay pending appeal, allowing work to continue on the Kingston natural gas project after a district court vacated the project’s approval under the National Environmental Policy Act, or NEPA, the main federal law governing environmental review of major projects. Daily Caller News Foundation reporting detailed the ruling and the stakes tied to delay.
Circuit Judge Eric Murphy, an appointee of President Donald Trump, wrote the Sixth Circuit opinion dated Oct. 16. The stay issued Friday, relative to the Oct. 19, 2026 coverage. The plant would replace the aging Kingston coal-fired facility in Harriman, Tennessee, and add 1,500 megawatts of natural gas generation.
Sierra Club, Appalachian Voices, and the Center for Biological Diversity sued TVA in October 2024. They argued the authority failed to adequately consider alternatives and improperly committed to the project before finishing its environmental review.
The district court agreed on NEPA grounds. It found TVA did not consider enough viable alternatives and entered an agreement with East Tennessee Natural Gas before completing that review. The court then vacated project approval, a step that effectively required construction to stop.
Southern Environmental Law Center had contended in September that the utility committed ratepayer money to the project before finishing required environmental review. The appeals court took a different view of the legal balance.
Judges on the Sixth Circuit concluded TVA was likely to prevail on appeal. They also warned that the lower court decision could impose substantial economic consequences if work halted.
Prolonged shutdown could add an estimated $625 million to the project’s cost, according to TVA testimony cited in the ruling. That figure sits at the center of the ratepayer concern hanging over the case.
About 2,000 union construction workers are tied to the project. More than half of them commute over 50 miles to the site. A stoppage would hit paychecks fast and could push workers to leave the job entirely.
Murphy put the human cost in plain terms in the opinion.
"Even a short work stoppage would deprive them of ‘their paychecks,’ while a longer one might force them to ‘find another job.’"
He pressed the point on the scale of harm versus the claimed legal defects.
"It is difficult to see how two mere ‘procedural’ hiccups could justify these potentially enormous harms."
Power reliability formed the other half of the court’s concern. A TVA official’s declaration cited in the opinion pointed to a “high risk of power outages and rolling blackouts” if delay stretched on during peak demand across TVA’s service territory.
Murphy also quoted an earlier federal appeals court decision on what interrupted power can mean.
"The unwarranted interruption of power may cause serious and unnecessary economic loss and possibly even loss of life."
The appeals court questioned the district court’s reading of NEPA. It concluded the law does not necessarily require multiple viable alternatives when only one option can meet an agency’s legitimate objectives.
That holding matters for large infrastructure projects that face narrow technical and operational paths. It also undercuts a common litigation tactic that treats every rejected alternative as a fatal process error.
Environmental plaintiffs had suggested TVA could protect homes by cutting electricity to businesses, including large data centers. The Sixth Circuit rejected that approach as a workable answer to the reliability problem.
Construction began in April 2024. Completion is expected in December 2028, the ruling states. The groups filed suit six months after work started and did not seek a preliminary injunction, so building continued through much of the litigation until the district court’s vacatur order raised the stoppage threat.
TVA said it does not comment on active litigation. Sierra Club, Appalachian Voices, and the Center for Biological Diversity did not immediately respond to a Daily Caller News Foundation request for comment.
Sierra Club is a national environmental advocacy organization. Appalachian Voices focuses on environmental protection and energy issues in Appalachia. The Center for Biological Diversity concentrates on endangered species and ecosystems.
Background coverage also noted Sierra Club’s other recent energy fights, including a Washington state challenge tied to voter-approved natural gas protections later struck down by that state’s high court in September, a challenge involving a Trump administration power plant rule rollback, and a Colorado campaign for legislation aimed at fossil fuel companies paying climate-related damages. Those items sit outside the Kingston stay itself but show the same network of groups active on related energy policy fronts.
A stay pending appeal is not a final win on the merits. It is a temporary order that keeps the status quo while the appeals court reviews the district court’s NEPA ruling and vacatur.
In practical terms, TVA may keep building. The $2.5 billion Kingston gas plant remains on its path toward the December 2028 target unless a later ruling changes course.
Investigators of the paper trail, and the full appellate panel as the case proceeds, will still have to resolve the core NEPA disputes: whether TVA’s alternatives analysis met the statute and whether the East Tennessee Natural Gas agreement crossed a pre-commitment line. The Sixth Circuit has already signaled that TVA is likely to prevail and that the claimed “procedural” problems do not justify the scale of economic and reliability harm at issue.
Exact details still not laid out in public summaries include the district court judge’s name, the precise calendar date of the vacatur order, the full text of the gas agreement, and the specific alternative options the plaintiffs say TVA should have studied. Authorities and the parties have not publicly filled those gaps in the material surrounding the stay.
What is public is the cost exposure. A long halt could load an estimated $625 million onto a project already priced at $2.5 billion. Ratepayers stand next in line if those overruns land in the rate base. Workers stand first in line if the gates close.
Murphy’s opinion framed the choice as more than paperwork. Paychecks, power supply, and public safety sit on one side of the ledger. Two disputed process claims sit on the other. The Sixth Circuit refused to let the latter stop the former while the appeal runs.
When activist litigation treats every major energy build as a veto opportunity, courts still have to weigh real-world harm against process objections. Reliable power and accountable government both depend on that balance holding.
