Group 1 - The core idea of the articles revolves around Suzhou's efforts in optimizing its energy supply structure and enhancing the reliability of its power grid to support green energy consumption and carbon reduction initiatives [1][2][3] Group 2 - Since the establishment of the International Energy Transformation Forum in 2015, the State Grid Suzhou Power Supply Company has been working on improving energy supply structures and resource allocation [1] - Suzhou has built a robust power grid infrastructure, including 563 substations and 14,400 kilometers of transmission lines, making it the largest power grid among prefecture-level cities in China [1] - In the summer of this year, external electricity accounted for about 50% of Suzhou's power load, with one-third of the electricity being green energy [1] - From 2015 to last year, Suzhou's installed power generation capacity increased by 57%, with renewable energy capacity growing 21 times over the past decade [1] Group 3 - In 2016, the State Grid Corporation and the Suzhou government signed a strategic cooperation agreement to develop Suzhou as a model city for energy transformation [2] - Suzhou was selected as one of the ten pilot cities for world-class urban distribution network construction, focusing on advanced distribution network technology applications [2] - The city has installed over 100,000 sensing devices, creating a highly perceptive smart distribution network [2] - In October 2023, Suzhou established a proactive monitoring system for low-voltage user outages and launched an AI-powered service system for power supply management [2] Group 4 - The emergence of virtual power plants is a trend in the construction of new power systems and market reforms [3] - The Suzhou Zero Carbon Smart Virtual Power Plant, established in December 2022, can consume and provide electricity while participating in power trading [3] - The virtual power plant completed market registration and is one of the first six virtual power plants in Jiangsu to participate in the electricity spot market [3]