Rail travel in Australia is considered one of the most energy-efficient modes of transportation, contributing only 2.6% of the country's transport greenhouse gas emissions. The Australasian Railway Association highlights that rail transport emits up to five times less greenhouse gases per passenger kilometer compared to cars, and moving freight by rail produces 16 times less carbon pollution than trucks. With Australia's target of achieving net zero emissions by 2050, the rail industry is embracing innovative approaches to enhance sustainability. The METRONET Byford Rail Extension project in Western Australia is leading by example, aiming to reduce emissions by 20% and exploring new technologies. One such technology is the use of Hydrotreated Vegetable Oil (HVO) as fuel, which successfully replaced traditional diesel in various equipment, abating nearly 8 tonnes of CO₂ emissions. The project also trialed a HYDI unit that produces hydrogen on demand for engines, showing a 19% increase in fuel efficiency and significant diesel savings. The project emphasizes the importance of reducing reliance on fossil fuels for environmental and health benefits, with positive feedback from operators. The innovative HYDI unit, developed by a South Australian company, demonstrates a promising solution to immediately cut carbon emissions in industries like construction, where electrification faces challenges. The project's success with renewable fuels and hydrogen technology sets a precedent for sustainable infrastructure projects and showcases the potential for widespread industry adoption.