Abstract
This study addresses the challenge of uneven renewable energy distribution by proposing a renewable energy supply chain using MeOH-fueled Allam Cycle for power generation. With the escalating demand for renewable energy, regions with a surplus can produce MeOH using green H2 and recycled CO2, which can then be transported to energy-deficient regions. In these importing regions, MeOH is used for electricity generation via the Allam Cycle, with captured CO2 recycled for MeOH synthesis, creating a closed-loop carbon system. This study evaluates the energy, economic and environmental aspects of this supply chain. It projects that electricity costs in importing regions could decrease from USD 233.02/MWhimpt to USD 101.33/MWhimpt, and MeOH costs could drop from USD 585.39/t to USD 173.40/t, assuming a reduction in renewable electricity costs in exporting regions from USD 45/MWhexpt to USD 15/MWhexpt. Comparative analysis shows acceptable energy conversion and transportation costs, with an electricity conversion rate of 30.65 %-37.07 %. This design offers a promising, cost-effective solution for a sustainable future, with the onshore wind supply chain exhibiting lower emissions of 111.3–97.2 kg/MWhimpt.
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