Gas engines are emerging as a cornerstone in the future of power generation due to their efficiency, reliability, and environmental benefits. These engines offer versatility in fuel types, including the ability to run on hydrogen blends, aligning with the global transition towards a greener energy landscape. With high efficiency and low emissions, gas engines contribute to reducing waste and harmful pollutants, making them an environmentally conscious choice. In South Africa, Wärtsilä's power system modeling demonstrates the significant impact of incorporating flexible gas engine power plants in decarbonizing the power system and achieving savings in costs and emissions. Gas engines are known for their reliability, rapid response, and ability to balance the intermittency of renewable energy sources, ensuring a stable power supply. The economic benefits of gas engines, along with their integration with renewable energy systems, create attractive lifecycle economics and enhance energy security. As industries and communities aim to meet sustainability goals and combat climate change, gas engines play a crucial role in transitioning to a low-carbon energy future, ensuring a stable and reliable energy supply.