Alternative Fuels

Provide a reliable CO₂ stream for e-methanol, e-kerosene and synthetic diesel. Scale production with stable purity and uptime.

Buffer and liquefaction for steady runs

Reliable CO₂ for renewable fuel pathways

Pilot, demo, and early commercial fuel units need a steady CO₂ feed to hit selectivity, conversion, and start-up profiles. When deliveries are late or variable in pressure and dryness, reactors drift off target, hydrogen integration becomes harder, and operators extend warm-up after cleaning or maintenance. Campaigns slip, learning cycles slow down, and commissioning schedules stretch.

Quality and compliance pressure

Fuel developers and project partners expect reproducible conditions with documented limits. If incoming CO₂ purity, pressure, or dryness changes, it becomes harder to link feed conditions to yield, selectivity, or life-cycle carbon intensity. Batch records take longer to reconcile, and procurement faces spot buys and rush fees that undermine OPEX planning, especially during long synthesis campaigns for fuels and intermediates.

Why the usual workaround is not enough

More cylinders or a larger vendor tank may increase inventory but not feed stability. Sites remain tied to external schedules, truck access, and safety coordination. For e-fuels and bio-routes you need a feed you can control, monitor, and record with the option to stage inventory close to the synthesis unit.

How GG&L fixes it

GG&L turns CO₂ into a managed utility. A compact capture skid connects to your boiler or CHP, purifies the stream to the grade your pathway requires, and feeds a buffer tailored to your run profile. Low-Temp capture fits hot-water boilers and many CHPs. High-Temp capture fits steam or superheated lines where higher capture efficiency is available. Storage smooths peaks, and optional liquefaction provides compact inventory or inter-building transfers at scale.

What changes day to day

Operators work with stable set points, start-ups and changeovers recover faster, and process engineers see fewer nuisance alarms tied to CO₂ supply quality. QA gets continuous trend logs and defined sampling points for audits. Planning can hold campaign windows with fewer emergency purchases, keeping synthesis runs on track. This applies across your Alternative Fuels scope, including renewable syngas, formic acid, ethylene, biofuels such as bio-ethanol, bio-methane, bio-methanol and bio-diesel, and SAF.

What you gain

Continuous, spec-stable CO₂ for synthesis and conditioning
Fewer delivery-related interruptions and clearer campaign planning
A modular setup that fits now and scales with the unit

Typical alternative fuel setups

Choose the configuration that matches your utility temperature and your run cadence.

Low-Temp capture + storage

Connects to gas or hot-water boilers and many CHPs. Delivers a clean, dry CO₂ stream buffered for pilot or demo runs and short peaks.
Best for: utilities below ~100 °C with staged pilot or demo campaigns.
Add liquefaction if: footprint is tight or you want compact inventory near the synthesis area.

High-Temp capture + storage + optional liquefaction

Connects to steam or superheated exhaust for higher capture efficiency at larger duties. Liquefaction reduces footprint and enables inter-building transfers at early commercial scale.
Best for: steam or high-temperature sites with longer continuous runs.
Add liquefaction if: on-site inventory must be higher or multiple units need the same feed.

How it works Start fit check

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Nicola Donato

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How It Works

Step-by-step

Our Alternative Fuels solution helps organisations turn captured CO₂ into value-added fuels, reducing reliance on fossil sources where electrification isn’t feasible. From power generators and heavy vehicles to steelmaking and high-temperature processes, we offer technologies to purify, condition, and convert CO₂ into renewable or synthetic fuels. With stable supply, rigorous quality, and modular design, this can deliver both environmental impact and financial return.

Step 1

CO₂ Capture & Feedstock Assessment

We begin by identifying CO₂ sources: flue gas, biogas upgrading, or industrial off-gases and then characterise the composition (CO₂ concentration, contaminants), pressure, flow, and moisture. Feedstock options (e.g. clean CO₂, hydrogen availability, renewable power) are evaluated to determine which fuel pathways are viable.

Step 2

Purification & Conditioning

Impurities (moisture, oxygen, sulphur, VOCs) are removed to meet strict quality requirements for conversion processes. Gas compression or cooling may be needed, along with drying stages and precise gas handling to ensure hydrogen or other reactants combine efficiently without poisoning catalysts or rupturing membranes.

Step 3

Fuel Production / Conversion

Based on your site’s resources, we deploy fuel pathways such as electro-fuels (e-fuels), synthetic methane, formate, or methanol. With renewable electricity or sustainable hydrogen, CO₂ is converted into fuels that are drop-in replacements or co-fuels in existing systems. The conversion module is designed to match scale, regulatory requirement, and end-use (transport, power, industry).

Step 4

Storage, Distribution & Integration

Produced fuels are stored safely and transferred as needed (onsite or offsite). We ensure compatibility with existing fuel infrastructure where possible. Monitoring, metering, and safety systems guarantee traceability, quality, and compliance with local and international fuel standards. Optimization cycles ensure efficiency over time.

4% net fuel yield

typical, route- and recipe-dependent

Yield impact

~4% more fuel out, same inputs

Steady-spec CO₂ (dry, low-O₂, particle-free) lets you hold the H₂:CO₂ ratio and reactor conditions tighter, reducing purge/off-spec, improving recycle stability and keeping catalysts in their sweet spot. Plants typically see a small but meaningful uplift in net fuel yield alongside smoother turnarounds and fewer rate cuts during feed swings.
Typical result: ~4% net fuel yield; route- and recipe-dependent (e-methanol, e-methane/SNG, Fischer–Tropsch, catalyst and recycle design).

Unique Selling Points

Key Advantages

Our CO₂ solutions for alternative fuels provide reliable, on-spec supply that keeps pilot, demo, and early commercial units running smoothly. Designed for precision and uptime, the system combines compact skid design with modular storage or liquefaction, reducing reliance on deliveries while ensuring predictable quality and costs.

Frequently asked questions

Fuel flexibility

Modular & scalable

Predictable output & quality

Cost competitive returns

Benefits

Benefits of alternative fuels

These benefits map to daily tasks in pilot, demo and early commercial units. They cover feed stability, catalyst protection, learning speed, yard logistics and audit effort. The examples apply across the Alternative Fuels pathways in your site plan, including renewable syngas, formic acid, ethylene, bio-ethanol, bio-methane, bio-methanol, bio-diesel and SAF.

Lower emissions where electrification isn’t possible

Many industries, such as aviation, shipping, and high-temperature manufacturing, face physical or technological barriers that make full electrification unfeasible in the short term. Alternative fuels derived from captured CO₂ provide a direct, impactful solution. By converting CO₂ into usable energy carriers with renewable inputs, operators can replace or displace fossil fuels while cutting greenhouse gas emissions significantly.

Because these fuels often act as drop-in replacements or can be co-fired with existing equipment, companies avoid costly infrastructure overhauls. This means faster deployment, quicker decarbonisation, and the ability to claim immediate climate action in hard-to-abate sectors. Additionally, these solutions create eligibility for carbon credits, subsidies, or renewable fuel incentives, improving both environmental and financial performance.

Secure fuel supply & independence from fossil sources

Fuel markets have become increasingly volatile, subject to geopolitical disruptions, fluctuating fossil prices, and tightening carbon taxes. By producing alternative fuels locally or integrating them directly into your site, operators gain independence from these external risks. A managed, on-site CO₂-to-fuel pathway offers predictable supply and removes the uncertainty of long global supply chains.

This reliability translates into better cost control and more secure long-term planning. Remote facilities, energy-intensive industries, or operations in high-cost fuel regions benefit especially from the stability and security of a decentralised fuel source. By reducing dependence on fossil imports, companies also enhance resilience against future disruptions in energy markets.

Enhanced compliance & future-proof regulations

Governments worldwide are tightening the carbon-intensity standards for fuels and requiring more transparent life-cycle reporting of greenhouse gas emissions. Operators who integrate alternative fuel solutions built on CO₂ capture position themselves ahead of these regulatory shifts. The system ensures documented quality, traceable inputs, and reliable reporting, which is critical for compliance audits and green certifications.

Meeting or exceeding standards such as EU RED II/III, Clean Fuel Standards, or other regional climate policies provides both protection and advantage. It supports successful bids in tenders, aligns with procurement policies that increasingly favor low-carbon suppliers, and gives companies the regulatory stability to operate with confidence well into the future.

Leverage existing infrastructure & investment

Transitioning to sustainable fuels doesn’t need to mean replacing entire systems. Many alternative fuels can be integrated into existing infrastructure with only minor adjustments — whether through blending, drop-in use, or system modifications. This allows operators to protect and maximize the value of existing investments in engines, pipelines, and combustion systems.

By avoiding the CAPEX of entirely new facilities, companies accelerate their sustainability transition without major disruption. The approach supports gradual integration, giving operators the ability to decarbonize step by step while preserving operational continuity. This incremental pathway reduces risk while still achieving measurable sustainability and cost benefits.

Economic advantages through scale and modularity

The modular design of alternative fuel systems means operators can begin with smaller units and expand capacity as demand or renewable energy availability grows. This scalability avoids over-investment and ensures capital expenditure is aligned with actual operational needs. Over time, expanding production becomes less disruptive and more cost-effective.

As production scales, cost per unit fuel decreases, especially when combined with the benefits of renewable energy subsidies, carbon credits, and reduced fossil exposure. With carbon pricing trends continuing upward, alternative fuels increasingly compete favorably with conventional fossil fuels. The result is a pathway that is both economically sustainable and aligned with long-term decarbonisation goals.

Brand & market differentiation

Adopting alternative fuels derived from captured CO₂ positions companies as leaders in sustainability. Labels like “synthetic renewable fuel,” “CO₂-derived e-fuel,” or “low-carbon biofuel” carry strong reputational value, resonating with customers, investors, and regulators. This can help secure premium contracts, meet ESG-driven procurement requirements, and strengthen market standing.

Beyond compliance, it becomes a story of innovation and responsibility. Offering clean fuels not only reduces emissions but also demonstrates leadership in shaping the future of energy. This brand differentiation supports stakeholder trust, creates new market opportunities such as green tenders, and helps companies remain competitive in a rapidly changing global market.