Can the energy transition now be called harmful to the atmosphere?! Interesting findings from the World Meteorological Organization's greenhouse gas bulletin for 2025. In addition to the need to reduce CO2, methane and nitrogen emissions, the World Meteorological Organization calls for a more cautious energy transition due to the increase in sulfur hexafluoride (SF₆)* and hydrogen concentrations. As the organization points out, over the past three decades, SF6 concentrations have steadily increased in relation to the increase in global electrification. “It has an atmospheric lifetime of more than 1,000 years and has a 100-year global warming potential of about 24,300 times that of CO₂. The increase in SF₆ concentrations in 2025 was a record." The concentration of hydrogen increased by 5.3% between 2010 and 2024. Hydrogen is used as a renewable energy source for carbon-intensive sectors such as metals and shipping. Hydrogen is not a greenhouse gas, but it affects the chemistry of the atmosphere and therefore has a strong indirect effect on global warming. Its release into the atmosphere from production facilities, pipelines, storage vessels and fuel cells is a growing concern. Both H2 leakage and SF6 persistence are potential threats that could undermine the climate benefits of the energy transition. *The main field of application of SF₆ is gas-insulated circuit breakers and switches in the electrical industry. Energy today without VPN: max / site.