The Research Institutes of Sweden (RISE) ICE data center unit in Luleå has a fully functioning, demonstrator proof-of-concept of green-gas-powered fuel cells powering an immersed liquid-cooled data center with combined heat recovery into a local heating network. At Datacenter Forum Copenhagen 2021, Jon presented the concept of the demonstrator. Now, after operating with continued developments and improvements from March 2022, results from the fully operational system highlight some interesting observations and lessons learned.