Explore the microbial side effects of underground hydrogen storage in this informative talk by Dr. Nicole Dopffel, Senior Researcher at the Norwegian Research Institute - NORCE. Delve into the challenges of safe and cost-efficient storage of surplus hydrogen gas (H2) as a renewable energy carrier. Examine the potential risks associated with underground gas storage (UGS) in salt caverns, deep aquifers, and oil/gas reservoirs, environments with high microbial activity. Learn about how subsurface microorganisms can utilize H2 in their metabolism, potentially leading to undesired effects such as H2 loss. Gain valuable insights into the current knowledge surrounding microbial-related risks in H2 UGS and discover potential opportunities for implementation in this comprehensive one-hour presentation.