海南500千伏主网架工程投产，核心主网输电能力提升超4倍

Core Viewpoint - The completion of the Hainan 500 kV main grid project marks a significant upgrade in the province's power infrastructure, enhancing electricity transmission capacity and reliability across the island [1][4]. Group 1: Project Overview - The Hainan 500 kV main grid project includes the construction of three new 500 kV substations and transmission lines spanning 838 kilometers, creating a complete "口" shaped ultra-high voltage network [1][4]. - The project represents a historic leap in voltage level from 220 kV to 500 kV, increasing power transmission capacity by over four times [1][4]. Group 2: Economic Impact - Since the establishment of the Hainan Special Economic Zone, the power grid has undergone multiple upgrades, with the highest electricity load in Hainan projected to grow from 6.87 million kW in 2021 to 8.57 million kW by 2025, a 24.7% increase [2]. - The overall electricity consumption in Hainan is expected to grow at an average annual rate of 10.3% during the 14th Five-Year Plan period, with a forecasted peak load of 15.5 million kW by 2030 [2]. Group 3: Future Developments - The project is part of a broader strategy to enhance the reliability and adaptability of the power system in response to increasing electricity demand from large-scale clean energy projects [4][6]. - The Southern Power Grid plans to invest 46 billion yuan during the 14th Five-Year Plan to improve Hainan's power infrastructure and disaster resilience, aiming for a power supply capacity that exceeds maximum load by 1.25 times by 2030 [9].