The green hydrogen field is experiencing a resurgence, particularly in the aviation industry, which is actively seeking sustainable alternatives to traditional jet fuels. E-fuels, synthetic hydrocarbon fuels created by combining captured carbon with green hydrogen, have emerged as a promising solution. Projects like Project Roadrunner in Texas and Metafuels in Switzerland are garnering attention and investments for their innovative approaches to producing sustainable aviation fuels (SAF). American Airlines, Infinium, and other partners are collaborating on Project Roadrunner, which recently secured strategic funding for a Texas-based e-fuel initiative. Metafuels, supported by Celsius Industries and other investors, is developing a production facility in Denmark to generate SAF using renewable resources. Despite the cost challenges associated with green hydrogen, companies like Metafuels are focusing on efficient and scalable processes to offset expenses. Honeywell's eFining technology is being utilized in projects such as the large-capacity eSAF hub in Rotterdam, aiming to reduce greenhouse gas emissions significantly. The partnership between Honeywell and Power2X highlights the importance of technology in shaping the future of aviation and the energy transition. While there are still obstacles to overcome, the growing interest and investments in green hydrogen and e-fuels signal a positive outlook for the aviation industry's sustainability efforts.