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To achieve zero carbon emissions, replacing conventional fuels in combustion engines and gas turbines with carbon-free fuel is of utmost important. While hydrogen is effective in mitigating climate change, the cost challenges in liquefaction and transportation persist. Ammonia (NH 3), a carbon-free fuel with its higher volumetric energy density and cost advantages, emerges as a potential substitute. This review reports the most recent studies on NH 3 as a fuel for micro gas turbine (MGT), highlighting both advantages and limitations. The performance and emissions in gas turbines are discussed. The main obstacles to a widespread usage of NH 3 blends as fuel for MGT power generation are addressed, along with the current stage of commercialization. The review explores all the numerical and experimental works on NH 3 blend in combustion system of MGT, and further presents ways to overcome the limitations associated with the combustion, such as high NO x emissions and low burning velocity. [Display omitted] • A comprehensive analysis of ammonia blend reactive fuels for micro gas turbine power generation is presented. • Advantages and limitations of ammonia combustion in micro gas turbine over hydrocarbon fuels are summarized. • The issues that hinder a widespread usage of ammonia and ammonia/blend as fuel for micro gas turbine are addressed. • The current stages of commercialization are discussed. • Possible approaches to overcome ammonia combustion barriers in micro gas turbine are highlighted for future research. [ABSTRACT FROM AUTHOR]