In a recent episode of the Net Hero Podcast, Ali Al-Sikab, a Scientist at the National Physical Laboratory (NPL), emphasized the importance of harnessing hydrogen as a key element in achieving a net zero future. Ali explained that while many people associate hydrogen with combustion fuel, its role in generating electricity is often overlooked. The UK is looking towards hydrogen to contribute significantly to electricity production, aiming for 20-35% by 2050. Ali highlighted the necessity of transitioning from grey to green hydrogen for a cleaner energy landscape. Grey hydrogen, currently produced through carbon-emitting thermal processes, needs to be replaced with electrolysed green hydrogen derived from water using electricity. This shift is essential for decarbonising industrial processes and heavy-duty transportation, where batteries have limitations in weight, refueling time, and degradation. To make green hydrogen production more cost-effective, NPL is focusing on standardising electrolyser technology. By enhancing the durability, efficiency, and reducing costs of electrolyser components, the goal is to accelerate the adoption of green hydrogen and facilitate the transition to net zero emissions. The efforts to improve electrolyser technology and streamline its production are crucial steps towards a sustainable energy future. With the potential of hydrogen sourced from renewable sources like water, the path to a net zero world becomes clearer and more achievable.