The article discusses the adoption of renewable and sustainable energy sources to combat greenhouse gas emissions, focusing on the evaluation of methanol in Proton Exchange Membrane Fuel Cell (PEMFC) systems compared to diesel generators. Experimental testing at Sultan Qaboos University in Muscat, Oman, showcased the superiority of methanol in terms of efficiency, fuel consumption, and emissions. The study also integrated a hybrid energy system to minimize diesel dependency, reduce operational costs, and lower emissions, highlighting methanol's potential to enhance sustainability and energy efficiency. Fossil fuel combustion contributes significantly to global pollution, with diesel generators being a primary source of electricity in many rural areas. Methanol emerges as a promising alternative to diesel due to its lower emissions, cost-effectiveness, and increasing production from renewable sources. Methanol's economic advantages, reliability, and reduced emissions make it a viable fuel for power generation, with an energy cost of $0.90/kWh compared to diesel's $1.49/kWh. The research emphasizes the importance of hybrid fuel cell systems in advancing clean energy technologies, combining fuel cells with renewable sources for enhanced efficiency and reliability. Recent advancements in hybrid fuel cell systems have shown superior efficiency, low emissions, and effective energy management strategies. While challenges in cost-effectiveness exist, these systems offer a promising approach to reduce reliance on fossil fuels and promote energy sustainability. The study aims to address gaps in experimental validation and economic feasibility of hybrid energy systems by integrating HydroPlus fuel in PEMFCs and comparing its performance with conventional diesel generators. The article concludes that such hybrid systems can play a significant role in reducing CO2 emissions, lowering operational costs, and enhancing energy sustainability, providing a pathway towards a cleaner and more efficient energy future.