The article by IDTechEx delves into the key business models adopted by electrolyzer firms in green hydrogen projects. Electrolyzer technologies like alkaline water electrolysis, proton exchange membrane, anion exchange membrane, and solid oxide electrolyzers play a crucial role in green hydrogen production. Companies have devised various strategies to commercialize their electrolyzer systems effectively. Licensing technology to partners enables rapid deployment and revenue generation, with companies like Ceres Power, Hoeller Electrolyzer, PERIC, and Enapter leading the way. Turnkey solutions, where OEMs provide both electrolyzer stacks and balance of plant components, are favored by established players like Nel and ITM Power. Customized systems cater to specific project requirements, offering optimized performance for large-scale industrial applications. Consortium approaches involve collaboration among multiple firms to mitigate risks and pool resources for complex projects. In-house project development allows OEMs to have full control over all project aspects, creating opportunities for higher margins and direct customer relationships. Each business model presents unique advantages and challenges, influencing factors like technology deployment speed, revenue generation, and market reach. Overall, the diverse business models in the green hydrogen sector showcase the dynamic strategies employed by electrolyzer OEMs in driving the transition towards sustainable energy solutions.