Southern Green Gas

What Southern Green Gas does

Southern Green Gas (SGG) is an Australian climate technology company developing modular, solar-powered Direct Air Capture (DAC) technology for atmospheric CO2 removal and the manufacture of carbon-neutral synthetic fuels. Founded in 2018 by Managing Director Rohan Gillespie, SGG is headquartered in Southbank, Melbourne, with operations support at the Wallumbilla Gas Hub in Queensland and module manufacturing and testing at the ARM Hub in Brisbane. The company operates with a small team of 1-10 employees and has raised approximately AUD $3.1 million in disclosed equity and grant funding from Artesian Venture Partners, the Victorian Clean Technology Fund, Dr Alan Finkel AC, Daved Lambert, ARENA and the NSW Environmental Trust.

SGG's core technology is a standalone DAC module that captures CO2 from ambient air using proprietary Metal Organic Frameworks (MOFs) developed in collaboration with the University of Sydney, then releases the captured CO2 using solar-generated heat. Each module is designed to capture 1-2 tonnes of CO2 per year, and multiple modules combine into a scalable "DAC Hub" ecosystem. The platform is paired with green hydrogen production (via the University of Newcastle's "Hydro Harvester") to produce downstream products including renewable methane, e-Methanol and e-Kerosene/Sustainable Aviation Fuel, including a world-first integration of DAC with an algae bioreactor for SAF. Intellectual property includes a filed-pending patent on the renewable methane production process and XPRIZE Carbon Removal Milestone Award finalist recognition.

SGG's revenue model spans five streams: direct sales of DAC modules, technology licensing to global equipment manufacturers with negotiable exclusivity and territories, sale of negative emissions certificates (trading at US$120-200/tonne in California markets), supply of CO2 to protected cropping facilities (where prices exceed $1,000/tonne), and synthetic fuel production. Go-to-market combines direct enterprise engagement with a channel-based OEM licensing model targeting global manufacturers, particularly for the protected cropping and synthetic fuel verticals. The company is pre-revenue with its DAC module only reaching automated trial stage in April 2023.

Name

Southern Green Gas

Legal name

Southern Green Gas Limited

Website

https://southerngreengas.com.au

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

Southern Green Gas is an Australian climate technology company developing modular, solar-powered Direct Air Capture technology using metal organic frameworks to capture atmospheric CO2 for carbon removal and carbon-neutral synthetic fuel production.

Ownership category

akta.pro rank

Product category

Direct Air Capture Technology

NAICS

Industrial Gas Manufacturing (32512), Basic Chemical Manufacturing (3251)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Industrial Organic Chemicals (2860)

akta.pro primary industry

Direct Air Capture (DAC) Systems & Plants (EUABAFAA)

akta.pro secondary industries

Direct Air Capture (DAC) Project Development (EUABABAJ), Synthetic Methane (Methanation) & E-Gas Production (EUAJAJAI), Offsets & Carbon Removal Procurement (credits, DAC, nature-based removals) (THABANAE), Carbon Removal Credits Trading (DAC, BECCS, Biochar, Mineralization) (EUAGAIAL), On-Site Gas Generation Systems (IMAEACAJ)

Keywords

• Direct air capture
• Carbon capture modules
• Renewable synthetic fuels
• Carbon removal certificates
• E-methanol production

Headquarters

HQ city

Southbank

HQ country

Australia

HQ region

Oceania

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. DAC Module Sales: Sale of solar-powered DAC modules for carbon capture applications. Modules capture 1-2 tonnes CO2 per year and can be deployed across various scales from polytunnels to large DAC hubs.
2. Technology Licensing: Licensing DAC technology to global equipment manufacturers for mass production and sales into international markets. Exclusivity, territories and terms are negotiable.
3. Negative Emissions Certificates: Sale of carbon removal certificates generated by DAC operations. Certificates can be traded internationally at $120-200 per tonne in markets like California, or sold directly to corporate buyers like Microsoft.
4. Synthetic Fuels Production: Production and sale of e-fuels including renewable methane, e-methanol, and sustainable aviation fuel (SAF/e-kerosene) produced from captured CO2 and green hydrogen.
5. CO2 Supply for Protected Cropping: Supply of CO2 captured by DAC modules to protected cropping facilities for enhanced plant growth, bearing prices over $1000 per tonne for existing facilities.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels8 records

Core offering

Southern Green Gas designs, manufactures, and deploys solar-powered Direct Air Capture (DAC) modules that extract CO2 from atmospheric air using proprietary Metal Organic Framework sorbents regenerated by solar-generated heat. Beyond hardware, the company produces renewable methane, e-methanol, and sustainable aviation fuel (e-kerosene) from captured CO2, and sells independently verified negative emissions certificates to corporate offset buyers.

Product overview

Southern Green Gas (SGG) offers a portfolio of solar-powered Direct Air Capture (DAC) technologies. At its core is the modular DAC Module — a compact, standalone unit that captures CO₂ from air using adsorbent materials and solar-generated heat. Multiple DAC Modules combine to form a DAC Hub ecosystem for scalable carbon removal. Downstream applications include Renewable Methane (carbon-neutral fuel for existing gas infrastructure), e-Methanol (synthetic fuel from air-extracted CO₂ and hydrogen), and e-Kerosene/Sustainable Aviation Fuel (SAF) for aviation decarbonization. The company also manufactures specialized modules with Indigenous Australian animal names: the Wombat (large containerized DAC unit), Dingo (test bench), and Platypus (scaled-down DAC module). The technology leverages Australia's abundant sunlight and non-arable land for deployment.

Differentiator

Problem solved

Functional benefit

Brands

• e-Methanol: Part of a class of emerging e-fuels (Power-to-X) produced entirely from renewable energy and CO2 extracted from air. Includes e-methane (renewable methane), e-kerosene (sustainable aviation fuel), and methanol products.

Products and services

• Direct Air Capture (DAC) Module

Quantifiable outcome

• Up to 40% crop yield increase with CO2 enrichment in protected cropping
• +3 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Ten partnerships are on record, tiered flagship, core and minor.

• AspiraDACflagshipStrategic or Co-development Partner · 1 July 2022Collaboration bringing together Stripe as first customer for Australian solar-powered DAC module production and deployment. AspiraDAC enabling deployment of SGG technology.
• University of SydneycoreStrategic or Co-development Partner · 12 November 2021Research partnership with Professor Deanna D'Alessandro's team for MOFs technology development. Sydney Sustainable Carbon Team won US$250,000 XPRIZE Student Prize for DAC technology collaboration.
• Swiss RecoreStrategic or Co-development Partner · 21 September 2021Collaboration on Carbon Removal initiatives including building stakeholder awareness, educating international stakeholders, facilitating funding access, and creating investor/customer consortia.
• University of NewcastlecoreTechnology or Integration · 1 September 2020R&D partnership for Hydro Harvester technology that combines solar energy with water harvested from air to manufacture low-cost green hydrogen.
• APA GroupcoreStrategic or Co-development Partner · 1 May 2020Joint development agreement with Australia's largest gas transmission operator to develop renewable methane projects. Wallumbilla Demonstration Project will prove technical and commercial viability of renewable methane in existing gas infrastructure.
• Corporate CarbonminorStrategic or Co-development PartnerMemorandum of understanding for future collaboration on 1 tonne per day carbon capture and storage project at Moomba, with potential scale-up at Moomba or other storage sites.
• XPRIZEflagshipStrategic or Co-development PartnerXPRIZE Carbon Removal competition backed by Elon Musk. SGG technology used by University of Sydney team that won student prize. SGG named as finalist in milestone awards.
• ARM Hub (Advanced Robotics for Manufacturing)coreTechnology or IntegrationDAC modules being created and developed at ARM Hub in Brisbane. Hub providing advanced manufacturing capabilities for prototype development and testing.
• World Wildlife Fund (WWF)minorStrategic or Co-development PartnerPartnership through Platypus solution where SGG actively sponsors Australian animals. Collaborative effort on environmental conservation.
• Climate Change AuthorityminorStrategic or Co-development PartnerSGG advisors contributed to Climate Change Authority report on role of carbon sequestration in Australia's decarbonisation.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Global Thermostat: Global Thermostat is an early U.S. DAC company that built pilot plants in California and Alabama. It is comparable to SGG as both operate DAC equipment and sell captured CO2 for industrial uses (beverage carbonation, agriculture, enhanced oil recovery) as well as for permanent sequestration.
• Heirloom Carbon Technologies: Heirloom is a U.S. DAC startup using limestone-based sorbents to capture atmospheric CO2, with significant venture backing from Microsoft and others. It is a direct peer to SGG in the DAC module + carbon removal certificate business, serving the same voluntary and compliance carbon markets (e.g., California's $120–200/tonne range).
• Climeworks: Climeworks is the world's leading commercial Direct Air Capture company, operating the Orca and Mammoth DAC plants. It is the most directly comparable peer to SGG as both build modular DAC units selling carbon removal credits, though Climeworks uses solid sorbent regeneration powered by geothermal/waste heat rather than solar-thermal.
• Prometheus Fuels: Prometheus produces net-zero synthetic fuels (gasoline, diesel, jet) by extracting CO2 from air and combining it with green hydrogen. It overlaps with SGG's e-Kerosene/SAF and e-Methanol streams as a fellow player in Power-to-X fuels derived from atmospheric CO2.
• CarbonCapture Inc. CarbonCapture Inc. is a DAC startup developing modular carbon removal systems and recently initiated Project Bison in Wyoming. It is a direct peer to SGG in pursuing a multi-module solar/wind-powered DAC architecture targeting negative emissions certificate sales.
• 1PointFive (Carbon Engineering / Oxy Low Carbon Ventures): 1PointFive, the Occidental subsidiary deploying Carbon Engineering's DAC technology at scale (STRATOS plant in Texas), is the closest large-scale peer to SGG. Both aim to produce e-fuels from captured CO2; 1PointFive uses a liquid solvent/KOH process with natural gas heat, vs SGG's MOF/solar-heat approach.

Emerging players

• HIF Global: HIF Global is developing e-fuels (e-methanol, e-gasoline, SAF) using captured CO2 and green hydrogen, with flagship projects in Chile, Texas, and Tasmania. Its Haru Oni e-fuels plant makes it an adjacent peer to SGG's e-Methanol and SAF roadmap though HIF sources CO2 from biomass/point sources rather than DAC today.
• Liquid Wind: Liquid Wind is a Swedish developer of e-methanol facilities combining captured CO2 with green hydrogen. It is a comparable peer to SGG in the synthetic renewable methanol segment, though its CO2 is sourced from biogenic/point source rather than direct air capture.
• CarbonOrO: CarbonOrO is an Australian-Israeli DAC startup developing modular DAC systems powered by renewable energy. It is an emerging peer to SGG with a similar modular DAC + green hydrogen focus and overlapping geographic ambition (Australia and the Middle East) but smaller scale and funding.

Broad incumbents

• C-Quest Capital: C-Quest Capital is a global carbon finance and project development firm working across nature-based and technology-based carbon removal. It is a broad-incumbent peer to SGG in the carbon removal certificate market and adjacent in DAC project origination, though it does not build DAC hardware itself.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/SouthernGreenAU
• LinkedInlinkedin.com/company/southern-green-gas

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds1 record

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Southern Green Gas