Europe is strategically leveraging green hydrogen to achieve sustainability goals, aligning with emission reduction and economic decarbonization targets. Green hydrogen, produced through electrolysis powered by renewable sources, is reshaping the energy sector by emphasizing environmental friendliness. The process involves splitting water into hydrogen and oxygen using advanced electrolyzers, with two primary types dominating the industry: alkaline electrolyzers and PEM electrolyzers. To ensure efficiency and safety in green hydrogen production, precise monitoring of oxygen and hydrogen concentrations is crucial. Traditional methods like sample extraction have been replaced by advanced in-situ gas analyzers, revolutionizing the approach with real-time monitoring within the process stream. Key measurement points include monitoring oxygen and hydrogen at critical stages of production, gas purification systems, storage points, and safety monitoring locations. Optical technologies such as laser spectroscopy have transformed in-situ process analysis, enhancing accuracy and reliability in harsh industrial environments. The MOD-1040 Process Oxygen Analyzer and MOD-1060 Process Hydrogen Analyzer exemplify these advancements, offering precise measurements and ensuring safety in explosion-prone environments. In-situ gas analysis provides various benefits like wide measurement range, fast response times, high accuracy, low maintenance, versatility, enhanced safety, operational efficiency, and cost savings. The deployment of advanced in-situ gas analyzers plays a significant role in ensuring the safety, efficiency, and reliability of green hydrogen production processes, contributing to Europe's decarbonization goals and setting new standards for industrial process analysis globally.