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“绿电直连”这本账怎么算
经济观察报· 2025-07-26 09:49
Core Viewpoint - The article discusses the concept of "green electricity direct connection" (绿电直连), which allows renewable energy sources like solar and wind to supply electricity directly to consumers without going through the public grid, highlighting its potential benefits and challenges in implementation [4][5][11]. Summary by Sections Green Electricity Direct Connection - "Green electricity direct connection" is categorized into grid-connected and off-grid types, with most projects currently being grid-connected to ensure basic revenue through grid access [4]. - The National Development and Reform Commission and the National Energy Administration issued a notice on May 29, which outlines the goals and responsibilities related to the development of green electricity direct connection projects [4]. Construction Costs - The construction costs for "green electricity direct connection" are relatively high, primarily due to the need for additional infrastructure such as substations and transmission lines, which can exceed the costs of traditional grid connections [5][7][8]. - For instance, the cost of transmission lines is approximately 1 million yuan per kilometer, and the cost of substations is around 1 million yuan per megawatt [8]. Project Examples - An example project in the Datong Economic Development Zone includes 322 MW of solar power, 200 MW of wind power, and 50 MW/100 MWh of energy storage, with a total investment of about 2.8 billion yuan [9]. - The project features around 38 kilometers of transmission lines and a 220 kV substation, demonstrating the complexity and scale of infrastructure required for "green electricity direct connection" [9]. Green Value - Despite the slow progress and high costs, the renewable energy industry views "green electricity direct connection" as a viable development direction due to its potential for creating green value [11]. - This approach allows for clearer tracking of carbon footprints and compliance with international regulations, such as the EU's Carbon Border Adjustment Mechanism (CBAM) [11][12]. Benefits of Green Electricity Direct Connection - "Green electricity direct connection" can provide long-term benefits for power generation companies by securing a permanent large electricity user, reducing reliance on long-distance transmission, and enhancing energy supply security [13]. - Local governments can leverage this model to drive industrial upgrades and attract investments [13].