GEI envisions a highly integrated, ultra-high voltage (UHV) electricity network connecting countries and continents, enabling large-scale deployment of renewable energy and smart grid technologies . The core technologies, including high-voltage direct current (HVDC) transmission, are largely available or in development, but the unprecedented level of system integration across multiple regions presents significant technical challenges . International standards and interoperability protocols are essential to ensure stable operation and facilitate cross-border acceptance .
Initial studies suggest that a fully interconnected global energy system could reduce the levelized cost of electricity by around 4% and decrease required installed capacities by a similar margin compared to isolated systems . GEI could also enhance energy security, optimize renewable energy utilization, and support the global transition to low-carbon energy, contributing to the goals of the Paris Agreement . Moreover, interconnectivity can improve electricity access for regions currently lacking reliable power, supporting socio-economic development .
The success of GEI depends heavily on international cooperation, regulatory alignment, and equitable partnerships . Political commitment, shared scientific data, and collaborative frameworks are critical to manage cross-border energy flows, investment, and infrastructure development . Differences in national energy policies, market structures, and geopolitical tensions could pose obstacles to seamless integration .
Key challenges include:
While the Global Energy Interconnection is technically feasible and economically promising, its success will require robust international collaboration, standardized technical frameworks, and strategic investment. If these conditions are met, GEI could play a transformative role in achieving a sustainable, low-carbon, and globally interconnected energy system .
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