Uruguay is setting out to become a leading exporter of green hydrogen and its derivatives, as described by the hydrogen roadmap. The primary aim of this study is to explore how the country's electricity system reacts to the goals outlined there. Another aim is to analyze how the green hydrogen sector could develop based on the market price for hydrogen. A methodology for distributing the costs among both sectors is proposed. The analysis reveals that very different pictures are painted in each of the scenarios, leading to completely different developments of the energy systems in Uruguay, substantial expansions in renewable energy capacities, particularly photovoltaic and wind power, are necessary to support a hydrogen economy. The market-driven scenarios, especially at higher hydrogen prices, show significant scale-ups in electrolyzer capacities. The economic viability of hydrogen production at higher price points suggests that hydrogen exports could become a profitable venture for Uruguay.