{"id":63404,"date":"2026-03-18T14:12:00","date_gmt":"2026-03-18T14:12:00","guid":{"rendered":"https:\/\/ciaoup.it\/?p=63404"},"modified":"2026-03-18T14:12:00","modified_gmt":"2026-03-18T14:12:00","slug":"h55-battery-technology-helps-power-progress-of-rtx-hybrid-electric-flight-demonstrator","status":"publish","type":"post","link":"https:\/\/ciaoup.it\/?p=63404","title":{"rendered":"H55 Battery Technology Helps Power Progress of RTX Hybrid-Electric Flight Demonstrator"},"content":{"rendered":"

COMUNICATO STAMPA – CONTENUTO PROMOZIONALE<\/p>\n

Swiss\u00a0electric propulsion\u00a0company’s\u00a0EASA-validated\u00a0battery\u00a0system\u00a0enabling progress\u00a0of\u00a0hybrid-electric demonstrator targeting up to 30% fuel efficiency improvement for regional aircraft\u00a0<\/p>\n

SION, Switzerland, March 18, 2026 \/PRNewswire\/ — H55 today announced continued progress developing the 200 kWh Energy Storage System (ESS) for the RTX Hybrid-Electric Flight\u00a0Demonstrator,\u00a0since\u00a0the\u00a0project achieved\u00a0the\u00a0significant\u00a0milestone\u00a0of\u00a0its\u00a0first\u00a0full-power system test conducted in June 2025.\u00a0<\/p>\n

The\u00a0demonstrator,\u00a0led\u00a0by\u00a0RTX’s Pratt\u00a0&\u00a0Whitney Canada\u00a0and\u00a0Collins Aerospace,\u00a0aims\u00a0to\u00a0demonstrate up to 30% improvement in fuel efficiency for regional aircraft through a hybrid-electric propulsion architecture combining an advanced thermal engine, a 1-megawatt electric motor, and H55’s battery system.\u00a0<\/p>\n

Pratt\u00a0&\u00a0Whitney Canada\u00a0built\u00a0on\u00a0H55’s\u00a0battery architecture\u00a0and\u00a0safety\u00a0mechanisms\u00a0as\u00a0the\u00a0certifiable foundation for the demonstrator’s propulsion system.\u00a0H55’s Energy Storage System \u2014 validated through extensive flight operations \u2014 provided the compliance and safety baseline that enabled the program to advance rapidly.\u00a0<\/p>\n

Commenting\u00a0on\u00a0H55’s\u00a0partnership\u00a0with\u00a0Pratt\u00a0&\u00a0Whitney\u00a0Canada, Rob\u00a0Solomon\u00a0H55’s\u00a0CEO,\u00a0“There’s a meaningful distinction between being selected as a component supplier and being chosen as a certification foundation.\u00a0Pratt &\u00a0Whitney Canada didn’t just purchase our batteries \u2014 they built their demonstrator’s compliance baseline on an architecture that H55 has already flown for more than 2,000\u00a0hours\u00a0without\u00a0incident and\u00a0validated\u00a0through EASA test campaigns. That’s what eight years of disciplined certification work makes possible: when a program at regional aircraft scale needs to move fast, they reach for the system that’s already proven. This milestone \u2014 the first full-power ground test of a hybrid-electric propulsion system at this scale belongs to the entire team.”\u00a0<\/p>\n

H55’s ESS is engineered specifically for the requirements of aviation certification.\u00a0The system is lightweight\u00a0by\u00a0design, modular\u00a0to\u00a0enable\u00a0flexible\u00a0aircraft integration\u00a0and\u00a0weight\u00a0distribution,\u00a0and\u00a0based on a cell architecture that has already completed relevant European Union Aviation Safety Agency test campaigns.\u00a0<\/p>\n

The technology builds on H55’s broader experience developing electric propulsion systems for aviation. The company has conducted extensive safety validation campaigns for its battery modules \u2014 an essential step toward certification of next-generation electric propulsion architectures.\u00a0<\/p>\n

On the importance of this development for H55, the company’s CTO and Co-Founder, S\u00e9bastien Demont “This integration milestone represents a defining moment for H55 and for electric aviation as a whole.\u00a0The certifiable battery architecture we developed for CS23 aircraft has proven its scalability: the same cell-level safety philosophy, the same engineering discipline, is now powering a battery system at the heart of a CS25 hybrid-electric demonstrator alongside Pratt &\u00a0Whitney Canada.\u00a0We are\u00a0not\u00a0adapting\u00a0a\u00a0concept, we\u00a0are\u00a0scaling\u00a0a\u00a0proven, validated\u00a0platform.\u00a0This\u00a0is\u00a0what\u00a0it\u00a0means\u00a0to\u00a0build technology that is certifiable by design.”\u00a0<\/p>\n

H55\u00a0was\u00a0born\u00a0out\u00a0of\u00a0the\u00a0pioneering\u00a0Solar\u00a0Impulse\u00a0project, which\u00a0demonstrated\u00a0that\u00a0electric\u00a0propulsion could support long-duration flight.\u00a0Building on that heritage, H55 has since developed and flown multiple electric aircraft platforms, accumulating operational experience that continues to inform the development of next-generation propulsion systems.\u00a0<\/p>\n

With the RTX Hybrid-Electric Flight Demonstrator now progressing toward aircraft integration and flight testing on a modified De Havilland\u00a0Canada Dash\u00a08-100,\u00a0H55’s battery\u00a0technology\u00a0will\u00a0support hybrid-electric propulsion validation at the regional aircraft scale.\u00a0<\/p>\n

The program also represents an important step in extending H55’s technology from smaller electric aircraft platforms into the Part-25 \/ CS-25 category of regional transport aircraft.\u00a0By supporting a hybrid-electric propulsion system operating at regional aircraft scale, the demonstrator allows H55 to\u00a0further\u00a0validate\u00a0its\u00a0Energy\u00a0Storage System\u00a0architecture\u00a0in\u00a0an\u00a0environment\u00a0representative\u00a0of\u00a0future commercial applications.\u00a0<\/p>\n

Entry into the regional aircraft category represents a significant expansion of the addressable market for H55’s propulsion technology, as hybrid-electric architectures are increasingly considered for next-generation regional aircraft platforms.\u00a0<\/p>\n

As aircraft manufacturers evaluate hybrid-electric propulsion to improve efficiency and reduce emissions,\u00a0scalable\u00a0battery\u00a0systems capable\u00a0of\u00a0meeting aviation\u00a0certification\u00a0requirements\u00a0are expected to play a central role in the architecture of future regional aircraft.\u00a0<\/p>\n

Rob\u00a0Solomon\u00a0added “Programs\u00a0like\u00a0this\u00a0allow\u00a0us\u00a0to\u00a0demonstrate\u00a0that\u00a0the\u00a0same\u00a0certifiable\u00a0battery architecture developed for smaller aircraft can scale toward the regional aviation market.\u00a0That transition represents a major step in unlocking the commercial potential of electric propulsion.”\u00a0<\/p>\n

This important milestone highlights the growing maturity of electric propulsion technologies and their role in enabling more efficient and lower-emission aviation. As hybrid-electric aircraft enter service, energy storage systems will also become a critical lifecycle component of aircraft operations, creating long-term opportunities for certified propulsion technology providers.\u00a0<\/p>\n

About H55\u00a0<\/p>\n

H55 is a Swiss-based company specializing in certified electric propulsion and certification-grade energy storage systems for aviation.\u00a0The company enables electric aviation to scale by transforming commercial\u00a0lithium\u00a0cells\u00a0into\u00a0aviation-safe\u00a0Energy\u00a0Storage\u00a0Systems that\u00a0regulators\u00a0approve, insurers underwrite, and OEMs can deploy repeatedly as a certified propulsion platform across aircraft programs.\u00a0This is achieved through independent cell characterization, rigorous incoming screening, redundant safety architectures, and regulator-aligned testing designed around worst-case failure scenarios.\u00a0<\/p>\n

Founded as the technological legacy of the Solar Impulse program, H55 builds on more than two decades of hands-on electric aviation experience.\u00a0The company has designed, built, and flown multiple\u00a0electric\u00a0aircraft and\u00a0has\u00a0accumulated\u00a0more\u00a0than\u00a02,000 hours\u00a0of\u00a0fully electric\u00a0flight\u00a0with\u00a0zero battery-related incidents\u2014providing the operational depth required to execute certification-grade programs, not merely comply with them.\u00a0<\/p>\n

H55 benefits from a strong and experienced leadership team that combines deep expertise in scaling technology companies with hands-on operational execution. Together, these capabilities support a reliable transition from certified design to repeatable series manufacturing. H55’s platform-based approach, in which certification evidence compounds across programs, reduces adoption risk while facilitating the capital-efficient deployment of electric and hybrid-electric aircraft.\u00a0<\/p>\n

Media Contact\u00a0<\/p>\n

Axelle Krummenacher+41 79 464 22 60press@h55.ch\u00a0www
\n.h55.ch
\n\u00a0<\/p>\n

\nH55 SA
\nRoute\u00a0de\u00a0l’A\u00e9roport\u00a010 1950 Sion
\nSwitzerland
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Photo – https:\/\/mma.prnewswire.com\/media\/2936932\/RTX_Hybrid_Electric_Flight_Demonstrator.jpgPhoto – https:\/\/mma.prnewswire.com\/media\/2936931\/H55_Battery_Module.jpgLogo – https:\/\/mma.prnewswire.com\/media\/2345318\/H55_Logo.jpg
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Copyright 2026 PR Newswire. All Rights Reserved.\u00a0<\/p>\n

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