Syntholene Completes Construction of Iceland Demonstration Facility Six Months Ahead of Schedule, Commences Operations

Executive Summary

• Syntholene Energy Corp. has completed construction of its geothermal-integrated Solid Oxide Electrolyzer Cell (SOEC) demonstration facility in Húsavík, Iceland, finishing approximately six months ahead of schedule and under budget.
• The milestone marks the company's transition from concept and prototyping into real-world operations, with effects testing and systems validation expected to commence shortly.
• Initial efficiency and technoeconomic results are targeted for publication in Q4 2026, aiming to validate the cost and energy efficiencies of using geothermal heat to reduce electricity consumption for low-cost hydrogen and synthetic aviation fuel production.

Key Details

• Facility Completion: Construction of the geothermal-integrated SOEC demonstration facility in Húsavík, Iceland, is fully complete.
• Schedule & Budget: Project finished ~6 months ahead of the original development schedule and under budget.
• Construction Timeline: 69 days from the announcement of permit issuance to completion.
• Key Systems Deployed: Fabrication, delivery, installation, and integration of the proprietary Thermal Coupling Heat Exchanger system, SOEC module, water treatment systems, instrumentation and controls, and balance-of-plant infrastructure.
• Component Milestones:
• Thermal Coupling Heat Exchanger system fabrication completed in 42 days.
• Factory acceptance and operational commissioning of the SOEC module completed substantially ahead of schedule.
• Technology Purpose: Demonstrates cost and energy efficiencies of integrating geothermal heat with high-temperature electrolysis to produce low-cost hydrogen, the principal feedstock for synthetic fuel.
• Efficiency Claim: Expected to significantly reduce required electricity consumption by replacing a portion of the electrical energy input with geothermal heat.
• Testing & Validation: Effects testing will validate continuous operational integration between geothermal heat infrastructure, SOEC hydrogen production, thermal energy recovery systems, and balance-of-plant equipment.
• Data Utilization: Generated data will support engineering optimization, technoeconomic analysis, commercial project development, strategic partnerships, and project financing initiatives.
• Commercial Target: Aiming to produce ultrapure synthetic jet fuel at 70% lower cost than the nearest competing technology.
• Reporting Timeline: Initial efficiency and technoeconomic results expected to be published as early as Q4 2026.

Notable Quotes

• "Completing a first of its kind energy facility ahead of schedule and under budget is rare. Achievement of this milestone reflects the quality of our engineering team, project partners, and execution discipline. Syntholene has now graduated from concept and prototyping into real-world operations. Over the next few months of effects testing, we seek to demonstrate practically that geothermally-integrated SOEC hydrogen production can materially improve the economics of synthetic fuel." — Dan Sutton, CEO
• "Syntholene's next objective is to generate operational data from this real geothermally-integrated infrastructure, validating the impact of low-cost geothermal heat integration with high-temperature electrolysis. If successful, we believe this could represent a meaningful advancement toward cost-competitive synthetic aviation fuel." — Dan Sutton, CEO