Stralis Aircraft Co-founder and CEO Bob Criner announced at Avalon 2025 that the company will be offering hydrogen-electric (HE) retrofits for Beechcraft Bonanzas. The technology being developed involves powering an A36 Bonanza with a 240-kW electric motor drawing from Stralis fuel cells fed from wingtip tanks. System development has been progressing, with the first flight expected later this year. Interested Bonanza owners are encouraged to express interest in retrofitting their aircraft, as the technology promises significant advancements in fuel efficiency and weight reduction. The Stralis system, utilizing an H3X electric motor coupled to hydrogen-electric fuel cells fed from wingtip tanks, enables flights that are 10 times further than using batteries, with the ability to carry double the payload of a fossil-fuel-powered aircraft. The system keeps the A36 within its weight-and-balance envelopes. Stralis aims to have the first commercial HE systems available by the second half of next year and plans to scale up the technology to larger aircraft like the Beech 1900 for entry into service by 2030. The company is optimistic about the scalability of the technology and its potential impact on the aviation industry.