Syntholene Energy
Syntholene Energy is a pre-revenue public company developing ultrapure electro-sustainable aviation fuel (eSAF) via a geothermal-integrated solid oxide electrolysis platform, targeting commercial airlines seeking to meet EU SAF blending mandates at claimed 70% lower cost than competing technologies.
- Company typePublic
- Founded2024
- HeadquartersChicago, United States
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Syntholene Energy does
Syntholene Energy Corp. is a publicly traded development-stage synthetic fuel company (TSXV: ESAF; OTCQB: SYNTF; FSE: 3DD0) developing ultrapure electro-sustainable aviation fuel (eSAF) using a Hybrid Thermal Production System that integrates geothermal heat with high-temperature Solid Oxide Electrolyzer Cell (SOEC) electrolysis. The company's core proprietary technology is the Compact Cascade Oligomerizer, protected by U.S. Patent No. 12,441,674 B2, which performs sequential methanol synthesis, oligomerisation, and hydrogenation in a unitary multi-chamber vessel. The company secured 20MW of geothermal energy and a 500 m² site lease at the Húsavík Power Station in Iceland, where it completed a demonstration facility in June 2026, six months ahead of schedule, and has commenced effects testing.
The company's business model centers on B2B enterprise sales of eSAF to commercial airlines seeking to meet EU ReFuelEU Aviation decarbonization mandates and qualify for eSAF-specific subsidies of up to €6/liter. Syntholene targets hydrogen production costs of $1.50-$2/kg versus current green hydrogen at $6.69-6.90/kg, claiming 70% lower production cost versus competing synthetic fuel technologies. The go-to-market is direct enterprise sales secured through long-term offtake agreements; the most advanced commercial signal is a non-binding Expression of Interest with Icelandair for 250 million liters (20,000 tonnes annually) of eSAF over 10 years.
The company was incorporated in Delaware in February 2024 and became public in December 2025 via reverse takeover of GK Resources Ltd. Total disclosed private placement funding is approximately $5.75 million, with the most recent $3.75M raise in March 2026. Pre-revenue status is explicitly disclosed, with commercial revenue dependent on successful demonstration, scale-up, and conversion of pipeline interest into binding offtake agreements. Leadership combines process engineering, nuclear, refining, aviation, and clean energy expertise drawn from Tantalus Labs, Terrestrial Energy, Carbon Engineering, Suncor, Shell, and Icelandair.
Syntholene Energy firmographics
Firmographics- Name
- Syntholene Energy
- Legal name
- Syntholene Energy Corp.
- Website
- https://syntholene.com
- Company type
- Public
- Founded year
- 2024
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Syntholene Energy is a pre-revenue public company developing ultrapure electro-sustainable aviation fuel (eSAF) via a geothermal-integrated solid oxide electrolysis platform, targeting commercial airlines seeking to meet EU SAF blending mandates at claimed 70% lower cost than competing technologies.
- Ownership category
- akta.pro rank
Syntholene Energy industry classification
Industry- Product category
- Synthetic Aviation Fuel (eSAF)
- NAICS
- Petroleum Refineries (32411), Petroleum and Coal Products Manufacturing (3241)
- SIC
- Petroleum Refining (2911)
- akta.pro primary industry
- E‑Fuels & Synthetic Hydrocarbons (e‑kerosene, e‑diesel, e‑gasoline, e‑methane) (EUABAIAA)
- akta.pro secondary industries
- CO₂‑Derived Synthetic Fuels for Aviation & Marine (SAF e‑fuels, e‑ammonia/e‑methanol bunkering pathways) (EUABAIAH), Sustainable Aviation Fuel (SAF) & Alternative Fuels (e-fuels, biofuels, hydrogen) (THABANAA), E-fuels Storage & Blending (E-diesel, E-kerosene/SAF, E-gasoline) (EUAFAFAC)
Keywords
Where Syntholene Energy is headquartered
LocationHeadquarters
- HQ city
- Chicago
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Syntholene Energy business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Infrastructure, Personnel, Supply Chain, Operations, Marketing or Sales
Revenue model
- Synthetic Jet Fuel (eSAF) Sales: Revenue generated from producing and selling ultrapure synthetic jet fuel (eSAF) manufactured at 70% lower cost than competing technologies. The company targets the aviation industry's need for sustainable aviation fuel to meet EU decarbonization mandates and regulatory requirements.
Go-to-market motion2 records
Distribution channels2 records
Marketing channels5 records
Syntholene Energy product offering
Product offeringCore offering
Syntholene Energy produces ultrapure electro-sustainable aviation fuel (eSAF) using its proprietary Hybrid Thermal Production System, which integrates dedicated geothermal heat with high-temperature Solid Oxide Electrolyzer Cell (SOEC) electrolysis to convert water and captured CO2 into synthetic kerosene-grade jet fuel. The company is constructing a demonstration facility at the Húsavík Power Station in Iceland with 20MW of secured geothermal energy, targeting 70% lower production cost than competing synthetic fuel technologies and drop-in compatibility with existing aviation engines and fuel infrastructure.
Product overview
Syntholene Energy offers a portfolio of synthetic fuel products and technologies centered on its Hybrid Thermal Production System platform. The core offering is ultrapure eSAF (electro-sustainable aviation fuel), produced through an integrated process combining geothermal heat with solid oxide electrolysis for hydrogen production and proprietary chemical synthesis for fuel synthesis. Key technology components include the Thermal Coupling Heat Exchanger (which integrates geothermal thermal energy with electrolysis), the Dynelectro-supplied SOEC system, and the proprietary Compact Cascade Oligomerizer reactor protected by U.S. patent. The company positions its platform as delivering 70% lower cost than competing synthetic fuel technologies while producing carbon-negative, drop-in compatible fuels for aviation and broader transportation sectors.
Differentiator
Problem solved
Functional benefit
Products and services
- Electro-Sustainable Aviation Fuel (eSAF) Ultrapure synthetic jet fuel (electro-sustainable aviation fuel) produced through the Hybrid Thermal Production System. Engineered to pure molecular kerosene for superior energy density and thrust-by-weight performance over biofuel and fossil fuel equivalents, with carbon-negative feedstock captured from point source emissions. Designed for drop-in compatibility with existing petroleum-based aviation engines and fuel distribution infrastructure.
- Hybrid Thermal Production System Proprietary thermal-integrated production platform that combines dedicated geothermal heat with electricity to power hydrogen production and fuel synthesis for ultrapure synthetic fuel output. Targets 70% lower costs than the nearest competing technology for synthetic jet fuel production.
- Compact Cascade Oligomerizer Fuel Synthesis Reactor Proprietary unitary vessel reactor with multiple chambers incorporated into a single column for producing saturated linear hydrocarbon chains via methanol synthesis, oligomerisation, and hydrogenation in sequence. Employs physical proximity of exothermic and endothermic reactions within the same unit to maximize heat integration and fuel yield.
Quantifiable outcome
- 70% lower hydrogen production cost
- +2 more outcomes
Companies that use Syntholene Energy
Customer profileNamed customers1 record
Segments2 records
Ideal customer profiles2 records
Syntholene Energy technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Syntholene Energy partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core and minor.
- Municipality of NorðurþingicoreSigned land lease agreement for 500 m² site at the Húsavík Power Station in Iceland and received municipal approval for construction permit. The company plans to execute a ~1,000-hour effects test operational program during the permit period ending March 2027.
- HD ehf.coreAppointed as general contractor for construction of the demonstration-scale synthetic fuel facility in Iceland.
- DS Market Solutions Inc.minorEngaged for liquidity services to improve trading liquidity and market visibility of Syntholene's shares.
- Emerging Markets ConsultingminorEngaged for communications support to improve market visibility of Syntholene's shares.
- Papadakis EngineeringcoreSelected as development and integration partner for the geothermal heat exchanger system supporting the planned thermal-hybrid synthetic fuel demonstration facility. Contract value of US$289,026 with delivery expected by June 1, 2026. Papadakis provides detailed engineering, fabrication, containerized integration, and electrical services.
- Dynelectro ApScoreDanish electrolyzer technology provider selected as vendor for the synthetic sustainable aviation fuel (eSAF) demonstration facility. Dynelectro's solid-oxide electrolysis platform claims industry-leading energy efficiency, reportedly capable of converting up to 90% of renewable electrical energy into clean hydrogen. Selected following a two-year technical and commercial evaluation.
- IcelandaircoreSigned non-binding Expression of Interest (EOI) with Icelandair, Iceland's leading hub carrier. Agreement outlines Icelandair's interest in purchasing 20,000 tonnes (~25,000,000 liters) of eSAF annually over 10 years upon upscaled production and competitive pricing. Icelandair CEO Bogi Nils Bogason: 'Working with Syntholene aligns with our focus on proportionately reducing carbon emissions while meeting regulatory SAF mandates.'
- KIN Communications Inc.minorEngaged as investor relations agency specializing in the junior mining exploration and development sector. Monthly fee of $15,000 plus 500,000 post-Consolidation Options at exercise price of $0.375. Initial term until August 28, 2026.
- Generation IACP Inc.minorEngaged under issuer trading services agreement to provide market-making services with objective of contributing to market liquidity. Monthly fee of $8,500.
Scale indicators11 records
Recent moves8 records
Expansion highlights5 records
Syntholene Energy competitors and assessment
Company assessmentDirect peers
- SunFire: SunFire is a German e-fuels producer using high-temperature electrolysis (SOEC) technology to produce synthetic fuels including eSAF/e-kerosene from CO2 and renewable electricity. SunFire's SOEC focus and e-kerosene output make it directly comparable to Syntholene's Hybrid Thermal Production System.
- Atmosfair: Atmosfair operates a commercial e-kerosene demonstration facility in Germany producing synthetic aviation fuel from CO2 and green hydrogen. Both companies produce ultrapure synthetic jet fuel for aviation customers under EU regulatory frameworks, making Atmosfair a directly comparable operational peer.
- OXCCU: OXCCU is a UK-based eSAF developer using a single-step catalytic process to convert CO2 and green hydrogen directly into jet fuel. Both companies target the same drop-in aviation fuel market using CO2 feedstock, though OXCCU pursues a different catalytic pathway than Syntholene's methanol-to-jet route.
- Infinium: Infinium (formerly Greyrock Energy) produces e-fuels including eSAF using captured CO2 and green hydrogen via proprietary catalysts. Both companies target commercial-scale synthetic fuel production for aviation, competing for the same airline offtake agreements and EU regulatory subsidies.
- Norsk e-Fuel: Norsk e-Fuel is developing a commercial-scale eSAF facility in Norway using Power-to-Liquid technology with renewable electricity. Both companies pursue synthetic aviation fuel from green hydrogen and CO2, competing for the same Scandinavian/Nordic airline customers.
- HIF Global: HIF Global is a direct eSAF/e-fuels competitor producing synthetic fuels from green hydrogen and captured CO2. Both companies target the same aviation offtake market under EU ReFuelEU mandates using Power-to-Liquid pathways, making HIF Global the closest publicly-active analog to Syntholene's eSAF approach.
- Caphenia: Caphenia is a German eSAF startup developing Power-to-Liquid fuel production from renewable electricity, CO2, and water. Both companies pursue commercial-scale synthetic aviation fuel production using similar input chemistries, targeting EU regulatory-driven offtake demand.
Broad incumbents
- Neste: Neste is the world's largest SAF producer, with HEFA-based SAF already in commercial production and supplied to major airlines. As the dominant incumbent, Neste sets the benchmark against which emerging eSAF producers like Syntholene must compete on cost and supply availability under EU ReFuelEU.
- LanzaJet: LanzaJet is a more commercially mature SAF producer using alcohol-to-jet technology (HEFA-adjacent pathway) and has secured airline offtake agreements globally. While using a different feedstock pathway, LanzaJet competes for the same regulatory-driven SAF demand and corporate airline procurement budgets that Syntholene targets.
Emerging players
- Prometheus Fuels: Prometheus Fuels is an early-stage synthetic fuel startup targeting commercial-scale production of carbon-neutral gasoline, diesel, and jet fuel from CO2 and renewable electricity. Both companies pursue synthetic liquid fuel production for transportation markets using captured carbon as feedstock, making them comparable emerging players.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
Syntholene Energy social profiles
Digital presenceSyntholene Energy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Syntholene Energy leadership team
Management profileNumber of profiles
Profiles11 records
Syntholene Energy subsidiaries and ownership
Company hierarchySubsidiaries2 records
Syntholene Energy funding detail
Funding detailFunding overview
Funding rounds2 records
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Syntholene Energy M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Syntholene Energy
What does Syntholene Energy do?
Syntholene Energy produces ultrapure electro-sustainable aviation fuel (eSAF) using its proprietary Hybrid Thermal Production System, which integrates dedicated geothermal heat with high-temperature Solid Oxide Electrolyzer Cell (SOEC) electrolysis to convert water and captured CO2 into synthetic kerosene-grade jet fuel. The company is constructing a demonstration facility at the Húsavík Power Station in Iceland with 20MW of secured geothermal energy, targeting 70% lower production cost than competing synthetic fuel technologies and drop-in compatibility with existing aviation engines and fuel infrastructure.
Is Syntholene Energy a public or private company?
Syntholene Energy is a public company. It is classified as public and is currently operating.
When was Syntholene Energy founded?
Syntholene Energy was founded in 2024. It employs 1 to 10 people.
Where is Syntholene Energy based?
Syntholene Energy is headquartered in Chicago, United States, in the North America region.
How does Syntholene Energy make money?
One revenue line is on record: synthetic Jet Fuel (eSAF) Sales.
Who are Syntholene Energy's main competitors?
Direct peers on record are SunFire, Atmosfair, OXCCU, Infinium, Norsk e-Fuel, HIF Global and Caphenia. Broad incumbents are Neste and LanzaJet. Prometheus Fuels is listed as an emerging player.
Does Syntholene Energy have an API?
No public API is recorded for Syntholene Energy.
What industry is Syntholene Energy in?
Syntholene Energy's product category is Synthetic Aviation Fuel (eSAF). Its primary akta.pro industry code is EUABAIAA, E‑Fuels & Synthetic Hydrocarbons (e‑kerosene, e‑diesel, e‑gasoline, e‑methane), with a secondary code of EUABAIAH, CO₂‑Derived Synthetic Fuels for Aviation & Marine (SAF e‑fuels, e‑ammonia/e‑methanol bunkering pathways). Its NAICS code is 32411 and its SIC code is 2911.