Waste cold recuperation in fuel cell based power generation systems for datacenters

A method for operating a waste cold recuperation system for recovering energy from liquefied gas, the method comprising:

• supplying the liquefied gas to a first set of compute resources configurable to operate in a first cryogenic environment within a first temperature range from a first temperature value to a second temperature value higher than the first temperature value, wherein the liquefied gas is supplied as a coolant to cool the first set of compute resources, resulting in at least some of the liquefied gas becoming a vapor phase of the liquefied gas;
• supplying at least some of the vapor phase of the liquefied gas to a second set of compute resources configurable to operate in a second cryogenic environment within a second temperature range from a third temperature value to a fourth temperature value higher than the third temperature value, wherein the third temperature value is equal to or higher than the second temperature value, and wherein at least some of the vapor phase of the liquefied gas is supplied as a coolant to cool the second set of compute resources, resulting in the at least some of the vapor phase of the liquefied gas becoming a super-heated vapor phase of the liquefied gas;
• and
• supplying at least some of the super-heated vapor phase of the liquefied gas as fuel to fuel cells for providing electrical power to a datacenter load including compute resources configurable to operate in a non-cryogenic environment.