ProLogium Technology Co., Ltd. and Netherlands-based Elysian Aircraft BV signed a Memorandum of Understanding (MoU) on June 18, 2026, to jointly develop and integrate next-generation battery cells for commercial all-electric Electric-Aviation aircraft. The partnership targets pack-level energy densities between 320 and 420 watt-hours per kilogram (Wh/kg), a critical threshold for enabling regional zero-emission flights of up to 1,000 kilometers.

Announced via a joint press release from Taoyuan, Taiwan, and Paris, France, the agreement focuses on adapting ProLogium’s lithium ceramic battery technology for aviation applications. The collaboration will specifically support the development of the Elysian E9X, a planned 88- to 100-seat all-electric airliner designed to challenge conventional regional turboprops and narrowbody jets.

Advancing battery technology for the Elysian E9X

The MoU outlines a framework for rigorous assessment and validation of ProLogium’s next-generation cells within the demanding operational environment of commercial aviation. Aviation battery systems require significantly higher safety standards, weight efficiency, and energy density compared to automotive applications.

Elysian Aircraft BV has been refining the design of its E9X concept since its formal launch in January 2024. Following a conceptual design review completed in April 2026, the Manufacturers updated the aircraft’s specifications to feature six electric motors, a 50-meter wingspan to accommodate the battery packages, and a Maximum Take-Off Weight (MTOW) of 82.5 tonnes.

Rob Wolleswinkel, Co-Chief Executive Officer and Chief Technology Officer of Elysian Aircraft BV, emphasized the need for comprehensive ecosystem development alongside aircraft design.

“Battery technology is a key enabler for electric aviation, but aviation requires far beyond cell performance alone. As we advance our all-electric aircraft, the E9X, and the core electrification technologies, we are also working with suppliers and partners who can help shape the broader ecosystem for electric flight,” Wolleswinkel stated in the press release.

ProLogium expands beyond automotive markets

For ProLogium Technology Co., Ltd., the Partnerships represents a strategic expansion of its solid-state and lithium ceramic battery portfolio beyond the electric vehicle sector. The company recently announced plans to list on the Nasdaq through a merger, positioning its all-inorganic solid-state batteries for broader commercial applications.

The targeted pack-level energy density of 320 to 420 Wh/kg is intended to provide the Elysian E9X with a functional range of 750 to 1,000 kilometers. Achieving this density at the pack level, rather than just the cell level, remains one of the primary technical hurdles in electric aviation.

Vincent Yang, Founder and Chief Executive Officer of ProLogium, noted the stringent requirements of the aerospace sector.

“The development of next generation batteries is not only relevant to the electric vehicle industry, but also closely connected to the future of energy transition and new forms of mobility. Aviation applications place extremely high demands on battery energy density, safety, and weight efficiency, which is why careful and rigorous assessment and validation are essential,” Yang said.

AirPro News analysis

The stated target of 320 to 420 Wh/kg at the pack level is highly ambitious. Current state-of-the-art aviation battery packs generally hover around the 200 to 250 Wh/kg mark. If ProLogium and Elysian can successfully validate and certify a pack exceeding 300 Wh/kg, it would represent a step-change in the viability of 90-seat electric aircraft.

We note that Elysian’s recent design revisions, which increased the E9X wingspan to 50 meters and MTOW to 82.5 tonnes, reflect the physical realities of integrating massive battery volumes. The reduction from eight to six motors also suggests a focus on simplifying propulsion integration and reducing overall system weight. The success of this MoU will likely hinge on ProLogium’s ability to scale its lithium ceramic technology while meeting the European Union Aviation Safety Agency (EASA) thermal runaway containment and crashworthiness standards.

Sources: ProLogium Technology Co., Ltd.

Munich-based manufacturer VÆRIDION has secured more than 100 commitments for its all-electric Microliner aircraft following the successful completion of the program’s Preliminary Design Review (PDR) on June 11, 2026.

The milestone freezes the basic design of the nine-passenger commuter aircraft, allowing the engineering team to transition into detailed design and hardware fabrication. According to a company press release, the accumulation of over 100 commitments signals growing market confidence as VÆRIDION targets a 2027 first flight and commercial entry into service by 2030.

Engineering milestones and prototype development

The completion of the PDR marks a critical phase for the clean-sheet electric-aviation conventional takeoff and landing (eCTOL) aircraft. The Microliner features a glider-inspired wing design that integrates modular battery systems, paired with multi-engine, single-propeller propulsion.

With the preliminary design frozen, VÆRIDION is advancing toward building its first conforming prototype. The company has established a supply chain featuring several established aerospace manufacturers. Evolito will provide the electric propulsion systems, while MT-Propeller and GKN Aerospace are supplying key components. On April 23, 2026, VÆRIDION announced the selection of Garmin G600 TXi flight displays for the initial test aircraft, a decision Chief Technology Officer Markus Kochs-Kämper noted would meet the specific avionics requirements of the test campaign.

Industrialization and production targets

To support the transition from design to physical hardware, VÆRIDION has been expanding its physical footprint and capital reserves. On March 13, 2026, the company inaugurated its first manufacturing facility and test house at Oberpfaffenhofen Airport in Germany, occupying a site previously utilized by Lilium.

Chief Executive Officer Ivor van Dartel stated in April 2026 that the company was in execution mode and actively fundraising to contract the next stages of development. VÆRIDION has applied for development assistance through the European Union Innovation Fund, backed by the European Investment Bank, to support industrialization efforts at the Oberpfaffenhofen factory. The manufacturer is ultimately targeting a production rate of 40 to 50 aircraft per year.

Operational capabilities and certification path

The Microliner is designed to serve regional commuter routes with a maximum range of 400 kilometers under Instrument Flight Rules (IFR) conditions. The aircraft aims to provide zero-emission regional connectivity, a sector drawing increased attention from operators looking to reduce carbon footprints on short-haul networks.

VÆRIDION is working toward certification with the European Union Aviation Safety Agency (EASA). The regulatory approval process is scheduled to align with the company’s target of a 2030 entry into service.

AirPro News analysis

Securing 100 commitments at the PDR stage provides VÆRIDION with crucial market validation as it enters the capital-intensive prototype fabrication phase. While the eCTOL market is less crowded than the electric vertical takeoff and landing (eVTOL) space, the technical challenges of battery energy density and weight remain significant hurdles for any electric regional aircraft.

We note that VÆRIDION’s strategy of partnering with established aerospace suppliers like Garmin and GKN Aerospace reduces some developmental risk compared to a fully vertically integrated approach. However, maintaining the timeline for a 2027 first-flight will depend heavily on the success of the company’s current fundraising rounds and the timely delivery of conforming components to the Oberpfaffenhofen facility.

Sources: VÆRIDION

Airbus has outlined a comprehensive digital sovereignty strategy aimed at securing its aerospace operations against extraterritorial data regulations and supply chain disruptions, anchored by new partnerships in artificial intelligence, supercomputing, and private 5G networks.

In a company strategy update published on June 17, 2026, the European manufacturers detailed its push to reduce reliance on foreign technology providers. The initiative aligns with broader regional efforts to protect critical intellectual property and maintain strict defense security compliance across the aerospace sector.

Securing infrastructure and data access

The Airbus digital sovereignty framework is built on four main pillars: operational continuity, data access control, economic predictability, and technological independence. A primary focus of the strategy is shielding highly sensitive aerospace and defense data from extraterritorial laws.

To achieve this, Airbus is currently conducting a call for bids to evaluate “Trusted Cloud” infrastructure solutions. The company stated these solutions must guarantee total immunity from foreign regulatory overreach. Airbus has also expanded its sovereign cybersecurity capabilities through recent acquisitions, integrating firms such as Infodas in 2024, alongside Ultra Cyber Ltd and Quarkslab.

Deploying sovereign AI and supercomputing

The strategy update follows a series of technological deployments across Airbus facilities. On May 28, 2026, the manufacturer signed a strategic long-term collaboration agreement with French startup Mistral AI. The partnership focuses on embedding ethical and trustworthy frontier AI across Airbus commercial aircraft, helicopter, defense, and space operations. This agreement allows Airbus to deploy AI models on-premises or within trusted cloud environments to meet strict security requirements.

In April 2026, Airbus inaugurated two new-generation supercomputers developed with European computing leader Bull. According to the company, these systems increase sovereign throughput capabilities by a factor of three compared to the previous generation.

Additionally, Airbus partnered with Ericsson in late 2025 to deploy private 5G networks across key manufacturing sites in Toulouse, France, and Hamburg, Germany. These networks are designed to ensure secure, high-bandwidth connectivity for industrial operations.

The European Tech Creators coalition

Airbus is leveraging its position as a global aerospace leader to drive broader industrial policy changes. In May 2026, the company united with six other European industrial and technology champions to form the European Tech Creators coalition. The founding group includes ASML, Ericsson, Mistral AI, Nokia, SAP, and Siemens.

The coalition issued a joint publication urging European leaders to implement innovation-friendly frameworks and industrial policies to scale the continent’s technology and AI competitiveness. This follows Airbus’s earlier commitment on November 18, 2025, as a founding member of the European Sovereign Tech Industry Alliance (ESTIA), and its 2021 leadership role in the Gaia-X trusted data exchange framework.

AirPro News analysis

We view Airbus’s aggressive push for digital sovereignty as a necessary evolution for modern aerospace manufacturers. Modern aircraft programs generate massive amounts of proprietary data, and defense contracts require absolute security guarantees. By actively investing in European supercomputing, private 5G, and sovereign AI models, Airbus is insulating its production lines and intellectual property from geopolitical technology disputes. We expect this strategy will increasingly influence how Airbus selects its tier-one suppliers, likely favoring partners who can meet these stringent data localization and immunity requirements.

Sources: Airbus