A recent study highlighted the importance of clean hydrogen production in the global energy transition. The report emphasized the leadership of wind and hydropower in generating clean hydrogen, while solar energy showed higher emissions over its life cycle. Green hydrogen, produced exclusively through electrolysis using renewable energy, is gaining traction as a solution for decarbonizing hard-to-abate sectors. The study, published in Nature, analyzed over 1,000 planned hydrogen plants in 72 countries, focusing on emission standards and energy sources. It revealed that wind power emits about 34 g CO2e/kWh, whereas solar panels generate nearly 50 g CO2e/kWh. Despite this, solar energy is projected to contribute over 60% of hydrogen production by 2050. The study also noted the importance of the 'connected to the grid: energy export' production model, which minimizes greenhouse gas emissions by utilizing excess renewable energy for other consumers. Conversely, the 'grid-connected: energy import' model, relying on grid electricity from fossil fuels, showed the highest emissions. China, a key hydrogen producer, aims to transition to renewable energy sources for 70% of its hydrogen production by 2050, highlighting the sector's potential for emission reduction. Although green hydrogen is crucial for net zero emissions, economic challenges and renewable energy gaps must be addressed for its widespread adoption. The study calls for clearer sustainability standards and regulations to ensure the environmental impact of green hydrogen production is accurately assessed.