The Third Global Energy Interconnection

The Third Global Energy Interconnection (GEI) phase aims to develop Afro-Eurasian transcontinental grids using ultra-high voltage systems between 2030 and 2070.

Overview

The Third Global Energy Interconnection represents the third phase of the GEI initiative, which is a long-term plan to create a globally interconnected electricity network. Conceived by the State Grid Corporation of China (SGCC) and proposed by its chairman Liu Zhenya, this phase focuses on linking continental grids across Africa, Europe, and Asia through ultra-high voltage (UHV) transmission systems . The timeline for this phase is projected from 2030 to 2070 .

Objectives

The main goals of this phase include:

• Transcontinental energy integration: Connecting national and continental grids to enable large-scale electricity trade and energy balancing across regions .
• Renewable energy deployment: Facilitating the global use of clean energy sources such as solar, wind, and hydroelectric power by transmitting electricity efficiently over long distances .
• Energy security and efficiency: Reducing reliance on fossil fuels and enhancing the stability of power systems through smart-grid technologies and advanced UHV infrastructure .
• Global cooperation: Promoting international collaboration in energy standards, technical innovation, and policy frameworks to support sustainable development and climate goals .

Technical Aspects

The third phase relies heavily on UHV transmission technology, which allows electricity to be transmitted over thousands of kilometers with minimal losses. This includes:

• Backbone grids connecting multiple continents.
• Smart grid integration for real-time monitoring, automated control, and interoperability across different national systems .
• Support for variable renewable energy by balancing supply and demand across regions with different energy profiles .

Significance

The Third Global Energy Interconnection is expected to:

• Accelerate the global clean energy transition by enabling large-scale renewable energy utilization.
• Enhance economic and energy cooperation among participating countries.
• Contribute to climate change mitigation by reducing carbon emissions through a shift from fossil fuels to low-carbon electricity .
• Create new markets and industries in energy transmission, storage, and smart-grid technologies .

Challenges

Implementing this phase involves significant challenges, including:

• Technical integration of diverse national grids and energy systems.
• Financial investment for UHV infrastructure and cross-border projects.
• Political and regulatory coordination across multiple countries and regions .
• Capacity building and innovation to ensure reliable operation and maintenance of transcontinental grids. In summary, the Third Global Energy Interconnection is a visionary project that seeks to connect Africa, Europe, and Asia through advanced UHV grids, enabling a globally integrated, low-carbon, and sustainable energy system while fostering international cooperation and technological innovation .