H55 Secures Four-Platform Electric Propulsion Portfolio Spanning Training, Retrofit and Regional Aviation
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SHERIDAN, WYOMING - April 14, 2026 - H55, the Swiss developer of electric propulsion systems for aviation, has assembled a four-platform commercial portfolio spanning pilot training, large fleet conversions, and hybrid regional aircraft. Programs now in execution or active development include the Bristell B23 Energic, a CAE-backed Piper Archer® retrofit initiative, a De Havilland Dash-8 hybrid demonstrator, and a Harbour Air commuter conversion. Taken together, the agreements position H55 across the principal aircraft segments where battery and hybrid-electric technology is commercially viable in the near term, and indicate the company has moved from prototype development into active delivery obligations with named customers.