The global push for economy-wide decarbonization is fueling intense interest in the potential of hydrogen as a zero-carbon resource. Long coveted as a fuel of the future, hydrogen already is being used in a variety of applications to cut carbon emissions across the globe. This chapter details a case study from Mitsubishi Power in use of hydrogen in gas turbines to produce electricity. Currently, Mitsubishi Power’s largest and most advanced gas turbines make use of a dry low-NOx (DLN) combustion system that allows operation with up to 30% hydrogen in baseline configuration. Going forward, increasing the use of hydrogen as a percentage of a power station’s fuel mix – from a mixture of around 30% hydrogen all the way up to 100% hydrogen as an energy source – requires the need for innovative equipment modifications, such as a multi-cluster combustor.