Cerilon Gas-to-Liquids (GTL) project in Williams County, North Dakota is progressing through its commercialization phase in 2026, with the company announcing a major diesel offtake agreement that significantly strengthens the investment case for its planned multi-billion-dollar synthetic fuels facility.

Originally unveiled in October 2021 as a US$2.8 billion development, Cerilon GTL project in North Dakota has since grown to an estimated US$3.2 to 3.75 billion. The latest 2026 update confirms Cerilon has signed a definitive agreement for all diesel output from the facility with a major North American fuel supply and logistics provider, bringing binding offtake coverage to approximately 75% of total production volumes. This agreement greatly derisks the project ahead of its expected Final Investment Decision (FID) in mid-2026.

Additionally, Cerilon’s project is positioned to become North America’s first large-scale natural-gas-fed GTL facility with integrated carbon capture and sequestration (CCS), producing Group III+ base oils, ultra-low-sulfur diesel and naphtha near Trenton, North Dakota.

How Much Has the Cost of Cerilon GTL Project in North Dakota Changed?

While first announced at US$2.8 billion in 2021, the project’s estimated capital cost has progressively increased, with the investment’s value ranging between US$3.2 billion and US$3.75 billion as of 2026.

Cost escalation appears driven by:

• Inflation in industrial construction inputs
• Expanded project scope and engineering maturity
• Carbon capture integration
• Utility and site infrastructure requirements

Commercial bankability has also improved materially through staged commercialization milestones:

• Binding naphtha offtake agreement signed with Pembina Midstream (U.S.A.) Inc. in September 2025
• Definitive diesel offtake agreement signed in February 2026 for all diesel output
• Binding offtake coverage now reaches 75% of project volumes

These agreements substantially reduce investor exposure and improve financing attractiveness ahead of FID.

2026 Updated Project Timeline

October 2021

• Project first announced by Cerilon as a US$2.8bn GTL complex in North Dakota
• North Dakota Development Fund approves initial support funding

2022–2023

• Site development, permitting and technical development phases continue

June 2024

• Cerilon completes FEL-2
• Project advances into FEED (Front-End Engineering Design), final stage before FID

September 2024

• North Dakota regulators approve project siting
• Construction management conditions imposed
• Construction expected to start in 2026

September 2025

• Naphtha offtake agreement signed with Pembina Midstream

February 2026

• Diesel offtake agreement signed
• Product commercialization reaches 75% binding volumes

Mid-2026

• Final Investment Decision (FID) expected
• Construction start also expected

2028 through 2029

• Projected commissioning window

Project Team Behind Cerilon GTL Plant in North Dakota

Developer: Cerilon Inc.

Project SPV: Cerilon GTL ND Inc.

Contractors

• PCL Construction – General contractor
• Pembina Midstream (U.S.A.) – Naphtha offtaker
• Undisclosed North American fuel logistics provider – Diesel offtaker

Regulators Involved

• North Dakota Public Service Commission
• North Dakota Department of Commerce
• Williams County authorities
• Environmental and permitting agencies

What to Expect of Cerilon GTL North Dakota Project

The 2026 diesel offtake agreement is arguably the most commercially significant update since project launch because it improves financing credibility and signals real downstream market demand for the plant’s synthetic products. This is as major midstream projects in the region such as TC Energy’s Columbia Gas pipeline expansion project continue to take shape.

If FID is secured in 2026 as expected, the project could become one of North America’s most significant gas monetization developments – combining industrial decarbonization, gas utilization, specialty fuels production and carbon capture in a single integrated asset.

The plant also serves as Cerilon’s template asset for replication, with management repeatedly signaling a future portfolio of GTL and chemicals projects beyond North Dakota.

Cerilon GTL North Dakota Project Fact Sheet

Developer: Cerilon

Location: Near Trenton, Williams County, North Dakota

Project type: Natural gas-to-liquids (GTL) with CCS

Estimated investment: US$3.2bn-US$3.75bn

Initial announcement: October 2021

Capacity: 24,000 barrels/day

Products:

• Group III+ base oils
• Ultra-low sulfur diesel
• Naphtha
• Optional transition aviation fuel

Technology: Fischer-Tropsch GTL,  carbon capture & sequestration

FID target: Mid-2026

Construction start: Expected 2026

Construction peak workforce: 2,000

Commercial milestone: 75% binding offtake secured

Cerilon natural gas conversion (GTL) plant project to be constructed in North Dakota

Reported October 18, 2021 – A Canadian energy firm has announced plans to build a US$2.8 billion natural gas conversion plant in western North Dakota, with the state investing millions of dollars. Cerilon Inc.‘s development would be the first of its type in North Dakota, and state officials announced Thursday a US$3 million initial investment through the Department of Commerce, with further state financing anticipated in the future. Governor Doug Burgum hailed the news and highlighted the project as a step toward his lofty goal of making North Dakota carbon neutral by 2030, which he announced earlier this year.

Also Read: North Dakota Davis Refinery in Belfield to begin construction next year

According to Justin Kringstad, director of the North Dakota Pipeline Authority, the Cerilon facility will provide an in-state solution for part of that surplus natural gas as the byproduct’s output continues to rise in the coming years. The state of North Dakota presently has 32 conventional natural gas processing plants, however, it lacks any facilities for converting the gas to petroleum. According to a statement made by the company, once finished, the first phase of the Cerilon complex would convert natural gas into 24,000 barrels per day of diesel fuel and other specialized goods.

Cerilon aims to expand its GTL factory once the initial phase is completed, and construction of the facility is anticipated to begin in 2023. The facility’s construction will employ thousands of people in western North Dakota and provide around 100 long-term employment at the plant. As the Bakken formation’s oil wells mature, they will generate increasing amounts of natural gas, which might eventually place a ceiling on North Dakota’s oil production due to regulatory flaring restrictions. GTL, or gas-to-liquids, is a refining process that converts natural gas into fuel products such as gasoline and diesel.