Vertical Aerospace Advances Hybrid-Electric Propulsion Testing and Battery Manufacturing With Key Programme Milestones
Vertical Aerospace, a global aerospace and technology company focused on developing next-generation electric aviation solutions, has announced two major programme milestones that mark significant progress in its propulsion and energy system development roadmap. The Company has commenced integration testing of its next-generation hybrid-electric propulsion system while also achieving first production of its advanced all-electric Valo battery on an upgraded manufacturing line.
Together, these developments represent a meaningful step forward in Vertical’s strategy to build scalable, certifiable technologies that support both fully electric and hybrid-electric aircraft platforms. The milestones also reinforce the Company’s long-term ambition to expand the operational capabilities of its aircraft family across civil aviation, defense applications, and specialized mission profiles.
Strategic Progress Across Propulsion and Energy Systems
Vertical Aerospace’s latest announcements highlight the parallel advancement of two core pillars of its technology strategy: propulsion innovation and battery system development. These systems form the foundation of the Company’s flagship electric aircraft platform, Valo, as well as its future hybrid-electric variants.
The Company emphasized that both developments are not isolated achievements but interconnected milestones that strengthen its broader aircraft certification and production roadmap. While the hybrid-electric propulsion system expands range and mission flexibility, the battery manufacturing advancement enhances energy density validation, safety certification readiness, and scalable production capability.
Stuart Simpson, Chief Executive Officer of Vertical Aerospace, underscored the importance of these parallel advancements, stating:
“Hybrid capability complements our all-electric Valo platform and unlocks a broader range of civil and defence applications. At the same time, advancing our battery technology and manufacturing capability is critical to certification and scaling production. Together, these milestones demonstrate the strength and breadth of our technology platform.”
His comments reflect Vertical’s dual-track approach: advancing high-performance electric propulsion while also ensuring the underlying energy systems are manufacturable at scale under aviation certification standards.
Hybrid-Electric Propulsion System Enters Integration Testing
A key highlight of the announcement is the initiation of integration testing for Vertical Aerospace’s next-generation hybrid-electric propulsion system. This system is currently undergoing evaluation on the Company’s dedicated Hybrid Propulsion Evaluation Rig (HYPER), located at its Flight Test Centre at Cotswold Airport in the United Kingdom.
The commencement of testing follows more than two years of development work carried out at the Vertical Energy Centre, where engineers have been designing, refining, and validating system components and control architectures.
The HYPER facility plays a crucial role in bridging the gap between component-level development and full aircraft integration. It enables engineers to test the complete hybrid propulsion system in a controlled environment before it is installed in an aircraft for ground and flight testing.
The system under evaluation includes multiple integrated subsystems such as a turbine, electric generator, power distribution architecture, and advanced flight control software. Engineers are also testing system response, fault tolerance, redundancy behavior, and operational safety under a variety of simulated conditions.
This level of integrated testing is essential for aviation certification pathways, as it allows Vertical Aerospace to validate system performance and reliability before progressing to live flight environments.
Collaboration and Sustainable Fuel Integration
As part of its hybrid-electric development programme, Vertical Aerospace is working with multiple external partners to integrate a sustainable aviation fuel (SAF)-compatible gas turbine into its propulsion system. This turbine is designed to work in conjunction with an electric generator, forming a turbogenerator system that supports hybrid-electric flight operations.
The integration of SAF-compatible technology is particularly important in the context of aviation’s broader decarbonization efforts. By enabling the use of lower-carbon fuels alongside electric propulsion, Vertical’s hybrid system is designed to reduce lifecycle emissions while maintaining extended range and payload capabilities.
In addition to hardware development, Vertical Aerospace is leading the design of system integration protocols, control architecture, and software systems that manage energy distribution and propulsion coordination. These software systems are critical for ensuring that hybrid-electric propulsion operates seamlessly, balancing power between electric and turbine sources depending on mission requirements.
Once fully validated, the turbogenerator system will be integrated into a prototype hybrid-electric version of the Valo aircraft for flight testing and demonstration purposes. This hybrid variant is expected to play a key role in expanding operational use cases for the platform, particularly in missions requiring extended range or higher payload capacity than all-electric configurations can support.
Vertical Aerospace also intends to pursue certification of its hybrid-electric aircraft variant with both the UK Civil Aviation Authority (CAA) and the European Union Aviation Safety Agency (EASA), reinforcing its dual-market regulatory strategy.
Battery Manufacturing Milestone Achieved at Vertical Energy Centre
In parallel with propulsion system development, Vertical Aerospace has achieved a significant milestone in its battery programme with the production of its first battery unit on an upgraded assembly line at the Vertical Energy Centre.
This upgraded facility, which spans approximately 15,000 square feet, represents a major step forward in Vertical’s efforts to industrialize its battery production capability. The facility was initially launched in March 2026 and has since been enhanced with automated, aerospace-grade manufacturing systems designed to improve consistency, efficiency, and quality control.
The Vertical Energy Centre has been instrumental in supporting piloted flight testing since 2024, providing battery systems used in experimental aircraft operations. With the latest upgrades, the facility now supports a more advanced stage of development focused on certification-grade production processes.
The first battery units produced on the upgraded line will undergo rigorous environmental and operational testing. These tests are designed to validate performance under extreme temperature variations, vibration conditions, charge-discharge cycles, and long-duration operational stress scenarios typical of aviation environments.
These battery packs will also support Vertical’s certification aircraft as the Company advances through the final phases of approval with the UK CAA and EASA. In addition, they provide initial production capacity ahead of commercial entry into service, ensuring readiness for early-stage deployment.
The introduction of automated manufacturing processes is expected to significantly enhance scalability, allowing Vertical Aerospace to transition from prototype battery production to repeatable, certified production at higher volumes in the future.
Advancing Toward Certification and Commercial Readiness
Both the hybrid-electric propulsion system and battery manufacturing advancements are tightly aligned with Vertical Aerospace’s broader certification strategy. The Company is actively working with aviation regulators to ensure that both aircraft systems and energy storage technologies meet stringent safety and performance requirements.
Certification remains one of the most critical milestones in the development of electric and hybrid-electric aircraft. Vertical’s approach integrates system-level testing, component validation, and manufacturing quality assurance to meet regulatory expectations in both Europe and the United Kingdom.
The Company’s collaboration with regulators such as the UK CAA and EASA reflects its dual-certification pathway, which is designed to support international market entry and operational deployment across multiple jurisdictions.
Expanding the Capabilities of the Valo Platform
Vertical Aerospace’s Valo platform sits at the core of its aircraft development strategy. Designed as a next-generation electric vertical take-off and landing (eVTOL) aircraft, Valo is intended to serve both urban air mobility and regional transport markets.
The addition of hybrid-electric capability significantly expands the platform’s operational envelope. According to the Company, the hybrid variant is expected to deliver up to 1,000 miles of range, representing a tenfold increase compared to its all-electric configuration.
In addition to extended range, the hybrid version of Valo is designed to support a payload capacity of up to 1,100 kilograms, making it suitable for a wider range of commercial and mission-critical applications.
Other key advantages of the hybrid-electric configuration include reduced acoustic signatures, lower heat emissions, and improved operational flexibility in environments where electric-only aircraft may face limitations.
The system is also being developed to support both crewed and uncrewed operations. Vertical Aerospace is integrating autonomous and remote-control capabilities into the aircraft’s flight control systems, in collaboration with Honeywell’s advanced flight control architecture. This enables seamless switching between piloted and autonomous flight modes, depending on mission requirements.
Additionally, the hybrid-electric platform is designed with enhanced mission resilience, leveraging Valo’s inherent redundancy and structural damage tolerance to improve safety and reliability in critical operations.
Vertical Aerospace’s latest milestones represent a significant step forward in its mission to bring scalable electric and hybrid-electric aviation technologies to market. The initiation of hybrid propulsion system testing and the successful production of the first next-generation battery units demonstrate tangible progress toward certification and commercialization.
By advancing both propulsion and energy systems in parallel, the Company is strengthening the technical foundation of its Valo platform while expanding its future market potential across civil aviation, defense, and specialized transport applications.
As testing progresses and certification efforts continue, these developments position Vertical Aerospace as a key player in the evolving landscape of sustainable and hybrid-electric aviation.
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