Method of generating gas turbine fuel and gas turbine system

A fuel for use in a combustor of a gas turbine, wherein:

• the fuel is a gas mixture that comprises hydrogen and exhaust gas from a total combustor;
• and
• the fuel is produced according to a method that comprises:
• generating reformate using heat from a total combustor, wherein the reformate comprises hydrogen;
• and
• generating the fuel by mixing at least part of the reformate with at least part of the exhaust gas from the total combustor.

A gas turbine system comprising:

• a gas turbine comprising a first combustor that, in use, receives a fuel that is a gas mixture that comprises hydrogen and an exhaust gas;
• a hydrogen producing system;
• a second combustor, wherein the second combustor is a total combustor and the second combustor is separate from the first combustor;
• and
• an air intake for receiving air;
• wherein:
• the hydrogen producing system is arranged to perform a reforming process on a carbonaceous gas, wherein the reforming process generates a reformate that comprises hydrogen;
• the total combustor is arranged to generate heat and an exhaust gas;
• and
• the combustor of the gas turbine is arranged to receive reformate output from the hydrogen producing system, exhaust gas from the total combustor, and air from the air intake.