ConcernsThe Nuclear Regulatory Commission approved the Tennessee Valley Authority’s 300 MWe BWRX-300 at Clinch River on September 29, 2026, 14 months after the application came in. The public hearing in Oak Ridge took place in August, about six weeks before the permit was issued. NRC says it now targets construction permit decisions within 18 months, which leaves a town less time to organize than the old process did.
Other communities are next in line. Appalachian Power wants to build in Campbell County, Virginia, and neighbors are already pushing back. Geenex Power has named a possible site in Amherst County and plans community meetings that could start in November. What follows is a practical list for residents who land in that room, built around the US licensing process.
1. Which permit is this, and is any window still open?
Start with the docket. A US reactor normally needs two NRC approvals under 10 CFR Part 50: a construction permit, then a separate operating license. TVA’s permit does not let it load fuel. The NRC’s new mandatory hearing format puts public engagement earlier, and it is separate from the contested hearing where legal challenges happen.
The hearing itself follows a set pattern, per the NRC’s notice for X-energy’s Long Mott project in Texas:
An open house before the hearing, where residents can talk to NRC staff
A staff presentation on the review process and the application
A comment period with a time limit per speaker
Written comments, which the notice says must be submitted to enter the hearing record
A separate, earlier deadline to petition for a contested hearing, which was August 11, 2025 for Long Mott
The NRC’s notice says the uncontested hearing is not the place to request a contested one. Residents should ask on day one which deadlines have passed. TVA’s draft environmental impact statement also had its own comment docket, NRC-2024-0146. The hearing is where the record gets built, so the written comment matters as much as the speech.
2. How big is the emergency planning zone, and who decided?
The NRC finalized an emergency preparedness rule for SMRs that is risk-informed and performance-based. The key change is a scalable method for sizing the offsite zone, so it can be smaller than the traditional 10-mile plume zone when the design supports it. The rule does not set a specific ingestion pathway zone, but it does require applicants to describe their ingestion response planning.
The zone matters because it is what residents notice. Blykalla co-founder Janne Wallenius told an IAEA panel that municipal officials he met cared less about reactor novelty than about the zone’s extent and about waste. In 2018, comment letters filed with the NRC objected to TVA’s proposal to shrink the zone from 10 miles to about two or less. A smaller zone is not automatically a problem. It is a claim that needs a technical basis in the record.
Questions worth asking:
What zone size does the applicant propose, and which document shows the calculation?
Which county and state agencies run the drills, and who pays for them?
Does the plan cover schools, hospitals and roads inside the zone?
3. Where does the spent fuel go, and how long does it stay?
Nobody at the hearing can promise a repository. Oklo’s Everett Redmond told the same IAEA panel that engineers can handle spent fuel through disposal, but that the US disposal conversation is still open with no near-term plan to start. For a host town, that means on-site storage with no end date.
The volume question is contested. A Finnish study from VTT found that light-water SMR spent fuel resembles conventional plant fuel when burnup and enrichment are similar. Food & Water Watch cites a study suggesting SMRs would produce significantly more spent fuel by volume. Both claims depend on the design, so residents should ask for the fuel type and the numbers for this reactor.
A CSG West panel in July recommended a consent-based approach for siting reactors and waste alike. If residents are weighing which of these questions to lead with, this one tends to outlast the others, because storage runs for decades after the plant stops earning revenue.
4. Who pays if the cost runs over?
First-of-a-kind numbers are large. In Ontario, OPG released C$7.7 billion for the first BWRX-300 plus systems common to all four units, and the four-unit plan totals C$20.9 billion. TVA has a $400 million DOE grant, yet the NRC says TVA is still negotiating cost sharing with industry partners. The Vogtle AP1000s in Georgia came in at about $35 billion against an original estimate of $14 billion, per TribLIVE, and every resident who remembers that will ask the same thing.
Questions for the applicant:
Who absorbs an overrun: the developer, the utility’s ratepayers or taxpayers?
What is in the decommissioning fund, and who holds it?
Which cost figure is the estimate, and which is a contract price?
Every project, deal, company and regulatory event SMRbrief covers is logged, verified and searchable in SMRbrief Pro, which helps when residents want to compare a local proposal against comparable projects. A first-of-a-kind estimate is a forecast, and a hearing is a fair place to say so.
5. What does the county control, and what is in writing?
The NRC regulates radiological safety. Land use is local. Appalachian Power needs approval from Campbell County’s Board of Supervisors, and it says no customer has been identified yet. Residents there are raising the project alongside two proposed data centers and the Valley Link transmission line. Geenex says the Amherst County project would generate considerable tax revenue, which is a promise until it appears in an agreement.
Ask for these in writing before the vote:
A tax or payment-in-lieu agreement with actual dollar amounts
Water source and use, since the CSG West panel urged air-cooled designs for dry regions
Local hiring commitments and the construction timeline
A named contact at the developer who answers county questions
Residents who read the application and file written comments before the record closes will have more influence than residents who only speak. Which of these five questions would the developer least like to answer in public?