Libertine FPE

What Libertine FPE does

Libertine FPE designs, develops and licenses Linear Generator and Linear Motor technology for distributed power generation, hybrid powertrains and industrial applications. Founded in 2009 in Sheffield, UK and operating under parent Libertine Holdings PLC (AIM: LIB), the company replaces the conventional crankshaft with software-controlled linear electrical machines, enabling digital piston motion control that optimises velocity, motion profile and compression ratio cycle-by-cycle in real time via an ECU. This architecture supports multi-fuel operation (hydrogen, biogas, bioethanol, CNG, conventional fuels) and is claimed to deliver up to 30 percent more power from the same fuel input, ultra-low NOx performance and 80 percent reductions in package size and weight versus conventional portable generator systems. Libertine reports a portfolio of more than 30 granted patents covering linear electrical machines, control systems and developer tools.

The company's product surface is organised into two technology platforms built on shared core technology elements. intelliGEN is the opposed free-piston Linear Generator platform, targeting heavy-duty hybrid powertrains (trucks, buses, tractors, construction and mining), commercial vehicles, passenger automotive and distributed power generation. HEXAGEN is the hermetic Linear Motor-Generator platform, targeting energy storage, thermal power generation, waste heat recovery (including Organic Rankine Cycle systems), Stirling Engine power generators and hydrogen refuelling station compressors. OpenFPE, launched commercially in January 2025, is a turn-key opposed free-piston research engine sold to academic and government research institutions for advanced combustion and renewable-fuels research. The company also offers custom linear power system integration, high-frequency test actuators for NVH applications, and flexible gas expanders for ORC and thermodynamic research.

Libertine operates a B2B technology-licensing and engineering services model, with revenue generated from platform licensing to OEMs (including an exclusive NVH test-systems licence to AB Dynamics), from consultancy Statements of Work and prototype hardware development for partners such as Hyliion (KARNO generator for the Hypertruck platform), and from direct hardware sales of OpenFPE research engines through both direct sales and a channel partnership with Vieletech. Manufacturing scale-up is being executed through regional joint ventures — intelliGEN Linear Generators (Saudi Arabia) for the Middle East, Africa, Australia and New Zealand, and intelliGEN Linear Generators (Hong Kong) for the Greater Bay Area and Southeast Asia — licensing intelliGEN IP from parent intelliGEN Group. Customer engagement spans heavy-duty OEM powertrain programmes (Hyliion, MAHLE Powertrain, Ashok Leyland, OFFICINA MOTO ITALIA, Enovatemotors), research institutions (Cranfield, Imperial College, Brunel, DLR, Sandia National Laboratories), and emerging containerised hybrid power programmes for data centres and EV charging (BASEBATT). The company is headquartered in a 6,610 sq ft technology development centre at Sheffield's Vantage Park Industrial Estate and lists between 11 and 50 employees.

Name

Libertine FPE

Legal name

Libertine Holdings PLC

Website

https://libertine.co.uk

Company type

Public

Founded year

2009

Operating status

Operating

Headcount range

11–50 employees

Short description

Libertine FPE develops and licenses software-controlled linear generator and linear motor platforms — free-piston power systems that replace conventional crankshafts — for OEMs in heavy-duty transport, distributed power generation, hydrogen infrastructure and research institutions globally.

Ownership category

akta.pro rank

Product category

Linear Generator Technology and Free Piston Engine Systems

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Turbine and Turbine Generator Set Units Manufacturing (333611), Other Engine Equipment Manufacturing (333618), Mechanical Power Transmission Equipment Manufacturing (333613)

SIC

Motors & Generators (3621), Engines & Turbines (3510), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Hybrid Powertrain Integration Manufacturing (ICE-HEV/PHEV modules) (IMACAHAJ)

akta.pro secondary industries

Truck & Commercial Vehicle Powertrain Manufacturing (Diesel/CNG/Hydrogen/Hybrid) (IMACABAJ), Linear Motion & Mechanical Power Transmission (Ball/roller screws, linear guides, bearings, couplings) (IMAHAGAM), Hydropower Turbines, Generators & Balance-of-Plant Equipment Manufacturing (EUAMAHAF)

Keywords

• Linear generator technology
• Free piston engines
• Linear electrical machines
• Renewable fuel power generation
• Hermetic linear motors

Headquarters

HQ city

Sheffield

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Technology Platform Licensing: Libertine licenses its intelliGEN and HEXAGEN technology platforms to OEMs for their development of Linear Generator and Linear Motor products. The platforms are the result of over a decade of development and performance validation of Libertine's proprietary core technology elements.
2. OpenFPE Research Engine Sales: Sale of turn-key OpenFPE research engine systems to research organizations for advanced combustion development and renewable fuels research programmes. First sale to Cranfield University in January 2025.
3. Consultancy Services: Professional engineering consultancy services provided to OEM partners (e.g., Hyliion) for development support of linear generator technology integration into their products. Includes Statements of Work (SOW) and prototype hardware development.
4. Technology Licensing (Exclusive): Exclusive license deals for specific applications, such as the exclusive license to AB Dynamics for NVH test systems using Libertine's high frequency linear electrical machines.

Go-to-market motion3 records

Distribution channels6 records

Marketing channels8 records

Core offering

Libertine FPE designs and manufactures Linear Generator and Linear Motor technology based on software-controlled linear electrical machines that replace conventional crankshafts, enabling digital, cycle-by-cycle control of piston motion, compression ratio and combustion. The company licenses two proprietary technology platforms, intelliGEN and HEXAGEN, to OEM customers for integration into their power generation, hybrid powertrain, energy storage and gas compression products, and sells the turn-key OpenFPE opposed free piston research engine to research organisations. Revenue is generated through technology platform licensing, hardware sales of Linear Generator modules and research engines, and professional engineering consultancy services.

Product overview

Libertine FPE provides Linear Generator technology for power and motion applications, operating a platform-plus-modules architecture built on shared core technology elements including linear electrical machines, controls, and developer tools. The company offers two main technology platforms: intelliGEN for Linear Generator products (clean power generation from renewable fuels for distributed generation and hybrid powertrains) and HEXAGEN for Linear Motor products (energy storage, thermal power generation, waste heat recovery, and gas compression). The OpenFPE research engine commercialises intelliGEN technology for academic research organisations. Additionally, Libertine provides custom Linear Power Systems integration support, test actuator development services, and gas expander development for Organic Rankine Cycle applications.

Differentiator

Problem solved

Functional benefit

Brands

• intelliGEN: Platform enabling creation of clean, highly efficient and fuel-flexible Linear Generator products for heavy-duty hybrid powertrains, commercial vehicles, and distributed power generation applications.
• HEXAGEN
• OpenFPE

Products and services

• intelliGEN Platform Modular Linear Generator product development platform that licenses opposed free piston engine and control technology to engine makers and powertrain businesses for heavy-duty hybrid powertrains, commercial vehicles and distributed power generation.
• HEXAGEN Platform Hermetic Linear Motor-Generator technology platform licensed to heat engine and gas compressor businesses for energy storage, thermal power generation, waste heat recovery and gas compression products including Stirling Engine power generators, LMRC systems for hydrogen refuelling stations and Organic Rankine Cycle waste heat recovery systems.
• OpenFPE Research Engine Turn-key opposed free piston research engine combining a single cylinder opposed free piston Linear Generator module with power electronics, motion controls and auxiliary systems, sold to research organisations for advanced combustion development and renewable fuels research.
• Custom Linear Power Systems Custom linear power system development and integration support for demonstration pilots, with Libertine providing Linear Generator modules and integration support or delivering complete turn-key demonstration programmes together with strategic partners.
• Test Actuator Development High performance dynamic test actuators using linear electrical machines with gas bearings and variable pneumatic pre-load, configured for loads up to 25 kN, strokes up to 200mm and operating frequencies up to 300Hz for road load simulators, materials testing and automotive testing applications.
• Gas Expander Development Flexible piston expander product for lab-based Organic Rankine Cycles and other thermodynamic systems R&D, with high expansion ratio (20:1) and two-phase fluid tolerance, developed in partnership with the University of Brighton.
• LGN120-P1 Linear Generator Module Libertine's Linear Generator module providing clean, efficient power generation from renewable fuels for distributed generation applications.

Quantifiable outcome

• Up to 30% more power from same fuel input compared to conventional engine-generator combinations
• +4 more outcomes

Named customers9 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature7 records

Partnerships

18 partnerships are on record, tiered core, secondary and minor.

• intelliGEN Linear Generators (Saudi Arabia) / intelliGEN.SAcoreStrategic or Co-development Partner · 15 September 2025Joint venture in Jubail Industrial City to commercialize intelliGEN Linear Generator technology. Will lead manufacturing scale-up for Middle East, Africa, Australia and New Zealand while supplying modules to other intelliGEN businesses worldwide. intelliGEN IP licensed from Libertine's parent company intelliGEN Group.
• intelliGEN Linear Generators (Hong Kong) / intelliGEN.HKcoreStrategic or Co-development Partner · 15 September 2025Joint venture in Hong Kong/China to establish supply-chain and production facilities in Greater Bay Area and Shandong. Manufacturing intelliGEN modules under license for OEMs in China and Southeast Asia, and sourcing components for OpenFPE research engine systems globally.
• Cranfield UniversitycoreStrategic or Co-development Partner · 14 January 2025Libertine selected by Cranfield University to supply OpenFPE turnkey single-cylinder opposed free piston research engine for MINIMAL project - European consortium funded by Horizon Europe and UKRI assessing internal combustion technologies for future composite-cycle aero engines running on hydrogen or sustainable aviation fuel.
• Vieletech InccoreChannel Partner/ Reseller/ Distributor · 14 June 2024Strategic Partnership Agreement to commercialize OpenFPE research engine systems for advanced combustion development. Vieletech builds research engine controllers for government, academic and industrial applications. Agreement to deliver OpenFPE sales to research organizations in US and globally.
• LHP Engineering Solutions LLCcoreStrategic or Co-development Partner · 2 April 2024Strategic Partnership Agreement for turnkey embedded control systems and software development solutions. Leverages LHP's Product Readiness Level Process, software engineering development, system integration capabilities, EV testing facilities to accelerate OEM product development programmes using intelliGEN and HEXAGEN platforms.
• BASEBATT LtdcoreStrategic or Co-development Partner · 12 March 2024Strategic Partnership Agreement to create factory-configurable, fuel-flexible containerized hybrid renewable power systems. Collaboration in response to enquiries from US containerized power generator company, waste-to-energy technology company and global data centre energy services company.
• OFFICINA MOTO ITALIAsecondaryStrategic or Co-development Partner · 7 February 2024Strategic partnership to create downsized, power dense Linear Generator products using renewable fuels. OMI based in Milan develops high performance 2 and 4-stroke engines for industrial, marine and vehicle applications. Collaboration for small format Linear Generator products (3-6kWe) for 2/3-wheeler hybrid powertrains, small CHP, drones and portable power.
• Hyliion Holdings CorpcoreStrategic or Co-development Partner · 28 September 2022Novation of Master Consultancy Services Agreement from GE to Hyliion. Libertine supports development of electrical linear generator for KARNO generator deployed in Hyliion's Hypertruck powertrain platform. Previously worked with GE on this project since August 2021.
• Ashok Leyland LimitedcoreStrategic or Co-development Partner · 9 September 2022Memorandum of Understanding to evaluate Libertine's technology platform for commercial vehicle powertrains. Ashok Leyland is US$4.5 billion vehicle manufacturer with footprint across 50 countries, 2nd largest commercial vehicle manufacturer in India, 4th largest bus manufacturer globally.
• MAHLE PowertraincoreStrategic or Co-development Partner · 19 March 2021Joint development of heavy-duty vehicle range extender concept with £2.6m InnovateUK funding. Integration of Libertine's free piston technology with MJI passive pre-chamber internal combustion systems for multi-cylinder opposed Free Piston Engine optimized for renewable alcohol fuels.
• EnsusminorOthers · 9 November 2020UK's largest bioethanol producer supplying bioethanol for Libertine's cold start demonstration project with MAHLE Powertrain. Provided E90W10 (90% bioethanol, 10% water) wet fuel for testing.
• AB DynamicssecondaryOEM/ Whitelabel/ Licensing Partner · 19 March 2019Exclusive license deal for NVH test systems using Libertine's high frequency linear electrical machine technology. AB Dynamics developing new vehicle and component test systems with class-leading frequency and control performance up to 250Hz.
• ProductivsecondaryImplementation/ SI/ Consulting Partner · 13 March 2019Collaboration on modular Smart Engines to accelerate commercialization. Establishing pilot manufacturing systems at Proving Factory in Coventry for pre-production prototype systems including full vehicle demonstrations.
• EnovatemotorssecondaryStrategic or Co-development Partner · 8 January 2019MOU for future Smart Range Extenders based on Free Piston Engine design for luxury electric vehicles. Enovate launched EV brand in China in November 2018 targeting medium to large luxury car segment.
• Brunel University LondonsecondaryStrategic or Co-development Partner · 18 August 2017Consortium partner in £868k Innovate UK funded Free-Piston Gas Expander prototype project for small scale distributed heat-to-power applications.
• Entropea Labs LtdsecondaryStrategic or Co-development Partner · 18 August 2017Consortium partner in Innovate UK funded Free-Piston Gas Expander prototype project.
• Imperial College LondonsecondaryStrategic or Co-development Partner · 20 February 2017Partnership for EPSRC funded iHPC project demonstrating High Performance Heat-Power-Cooling Technologies using Libertine's Linear Power Systems in ORC and Absorption Refrigeration research.
• Universiti Teknologi PETRONASsecondaryStrategic or Co-development Partner · 20 January 2015Partnership to integrate Libertine's Linear Power Systems technology into UTP's Free Piston Research engine for high efficiency combustion systems research. UTP supported by PETRONAS oil and gas company.

Scale indicators15 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Hyliion Holdings: Listed developer of the KARNO linear generator for heavy-duty truck range-extender applications. Libertine is a direct technology partner supplying HEXAGEN linear e-machine subsystems and Motion Control API to Hyliion; both companies are pursuing fuel-agnostic linear generator technology for commercial vehicle powertrains.
• Achates Power: Developer of opposed-piston two-stroke compression-ignition engines for commercial vehicles. Targets the same heavy-duty engine efficiency problem as Libertine's free-piston approach, with overlapping OEM customer base in truck and SUV applications.
• Pinnacle Engines: Developer of opposed-piston spark-ignition engines for transportation, distributed power, and range-extended electric vehicles. Competes head-to-head with Libertine in the efficient small-displacement, high-power-density engine category.

Broad incumbents

• Rolls-Royce Power Systems (mtu): Subsidiary of Rolls-Royce supplying large reciprocating engines, gensets, and CHP systems for data centres, hospitals, and microgrids. Direct incumbent in the distributed power generation market where Libertine positions HEXAGEN-based products.
• Cummins: Global leader in diesel and natural gas engines for commercial vehicles and power generation. Relevant incumbent across Libertine's heavy-duty powertrain and distributed power segments; could be both customer (licensing partner) and competitor.
• Caterpillar: Global manufacturer of diesel and gas engines, generator sets, and hybrid power solutions for industrial, mining, and data centre applications. Competes with Libertine in heavy-duty mobile equipment powertrains and behind-the-meter distributed power generation.
• INNIO (Jenbacher / Waukesha): Large established manufacturer of gas-fired reciprocating engines and generator sets for distributed power and CHP applications. Represents the incumbent competitive offering against Libertine's intelliGEN platform for behind-the-meter and off-grid power generation.

Others

• MAHLE Powertrain: Engineering services and powertrain development subsidiary of MAHLE, currently a co-development partner with Libertine on the £2.6m InnovateUK heavy-duty range extender project. Comparable as a Tier-1 powertrain developer who could either license Libertine's technology or develop competing in-house solutions.

Emerging players

• Adaptive Energy: Michigan-based developer of solid oxide fuel cell (SOFC) linear generators for backup and off-grid power. Competes with Libertine HEXAGEN for distributed power generation applications where fuel flexibility and small footprint matter, though using a different conversion technology.
• Bowman Power: UK-based developer of exhaust energy recovery systems for large stationary engines, where former Libertine Chairman Dr Toby King was CEO. Comparable as a UK-headquartered small-cap energy technology business pursuing licensing-driven commercialisation with similar end-markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/libertinefpe
• YouTubeyoutube.com/channel/UCqt5Q0n5iVeizjakypxBzGQ
• LinkedInlinkedin.com/company/libertine-fpe-ltd

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries2 records

Funding overview

Funding rounds4 records

Investors7 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 Libertine FPE