The Potential of Biomethane produced from Waste Landfill to Supplement Renewable Energy in Saudi Arabia

Abstract

This study investigates the potential of biomethane from waste landfills in five major cities of Saudi Arabia (Riyadh, Jeddah, Makkah, Madina, and Dammam) using the Landfill Gas Emissions (LandGEM) model to estimate methane emissions from 2015 to 2115. The research assesses the cumulative methane emissions, projected to reach nearly 25.5 billion m3 by 2115, and quantifies the electricity generation potential from this biomethane, peaking at 1,299 GWh annually. Sensitivity analysis of key parameters, including the methane producing rate (k) and potential methane producing capacity (L₀), indicates that L₀ has a more impact on methane output. These findings highlight the importance of methane capture and landfill management strategies to enhance the renewable energy capacity of Saudi Arabia. Policy implications are discussed, highlighting the opportunity for biomethane to supplement the country’s energy mix in alignment with its Vision 2030 goals and commitment to reducing greenhouse gas emissions through the Global Methane Pledge.