US closes federal loan to restart Iowa's Duane Arnold nuclear plant
Built WorldDepartment of Energy commits up to $1.9 billion; 615-megawatt reactor targets early 2029 return
Yesterday: DOE closes $1.9 billion loanNew here? Follow stories to track developments over time. Create a free account to get updates when stories you care about change.
Overview
Updated 1 hour agoA shuttered Iowa nuclear plant is getting federal money to come back online. The Department of Energy closed a loan of up to $1.9 billion on September 8 to help NextEra Energy restart the Duane Arnold Energy Center, which a 2020 derecho knocked offline.
The 615-megawatt reactor is set to return to the grid in early 2029, pending approval from the Nuclear Regulatory Commission. Google will buy most of the output under a 25-year power purchase agreement, part of a wave of data-center demand that is pushing utilities to revive retired reactors.
Why it matters
If Duane Arnold returns on schedule, restarting old reactors becomes a proven template for powering AI data centers without new fossil generation.
Questions about this story
Free account needed to ask — your question is kept and asked for you right after sign-up. Answers are public.
No questions yet — be the first to ask.
Key Indicators
Voices
Curated perspectives — historical figures and your fellow readers.
Play
Exploring all sides of a story is often best achieved with Play.
WHO SAID WHAT?
Can you match the quotes to the right people?
- points for each correct match.
- time bonus when you answer in under seconds.
- streak bonus once you hit correct in a row.
— Who said this?
Tip: press 1– to answer.
points — sign up to put that on the leaderboard.
Higher or Lower
A number from this story, against one from elsewhere in the news — guess which is bigger, then keep the chain going. 5 rounds, 3 strikes; a miss costs a strike and resets your streak.
Keyboard: ↓/L lower · ↑/H higher
0 points — sign up to put that on the leaderboard.
Connections
Sixteen names from the news. Find the four hidden groups of four. Four mistakes max.
Sign up to keep a daily streak — a new puzzle lands every day.
Exit debate?
Your progress in this debate will be lost.
- 1 Two AI personas square off on this story.
- 2 You predict who'll win each round — correct picks earn XP.
- 3 One crossfire question is yours to fire. Pick it carefully.
Couldn't generate a topic
Select Your Champions
Choose one persona for each side of the debate
DEBATE TOPIC
Choose personas with different perspectives for a more dynamic debate.
Select debater for this side:
No debate personas available right now.
Select debater for this side:
No debate personas available right now.
Who's Got This Round?
Make your prediction before the referee scores
The referee scores both sides on
Round Results
Set the Crossfire
Pick the question both personas must answer in the final round
Debate Oracle! You called every round!
Sharp Instincts! You know your debaters!
The Coin Flip Strategist! Perfectly balanced!
The Contrarian! Bold predictions!
Inverse Genius! Try betting the opposite next time!
XP Breakdown
Prediction History
People Involved
Organizations Involved
NextEra Energy is the largest US utility by market value; its energy resources unit operates Duane Arnold.
The Energy Department unit that made the loan, formerly the Loan Programs Office.
Alphabet subsidiary that will buy most of Duane Arnold's power for data centers.
Independent federal agency that must approve Duane Arnold's restart; approval is pending.
State body that approved the restart certificate in June 2026; a lawsuit challenges it.
Timeline
August 2020 September 2026
-
DOE closes $1.9 billion loan
Latest FinancingOffice of Energy Dominance Financing commits up to $1.9 billion to fund the restart.
-
Iowa approves restart certificate
RegulatoryIowa Utilities Commission issues generating certificate; a lawsuit follows.
-
Google signs 25-year power deal
AgreementNextEra announces the restart plan with Google as anchor customer for most output.
-
Plant retires permanently
DecisionNextEra decides the repair cost is not worth it after 45 years of operation.
-
Derecho knocks Duane Arnold offline
IncidentA severe windstorm damages the plant, forcing shutdown of Iowa's only nuclear reactor.
Historical Context
2 moments from history that rhyme with this story — and how they unfolded.
Palisades Nuclear Plant restart (2022-2026)
Michigan's 805-megawatt Palisades reactor closed in May 2022 under owner Entergy. Texas-based Holtec International bought the plant and won a $1.5 billion federal loan commitment, aiming to become the first company ever to restart a decommissioned US nuclear plant.
The restart faced repeated schedule slips and cost growth but remains the leading test of US reactor revival.
Palisades established the regulatory and financial path later restarts now use.
Duane Arnold is the third attempt following this path, and its loan is the largest so far.
Three Mile Island Unit 1 restart (2024-2026)
Constellation Energy shut the 837-megawatt Pennsylvania reactor in 2019. In 2024 it struck a power deal with Microsoft and announced plans to restart, then secured a $1 billion federal loan for the work.
The project is the first restart tied to a major tech power purchase, with a target return in the late 2020s.
It set the template of tech companies backing nuclear restarts with long-term contracts and federal financing.
Duane Arnold follows the same playbook: a shuttered plant, an anchor tech buyer, and government money.
