In the first half of the year, the State Grid Shanghai Electric Power Company sold 64.539 billion kWh of electricity

On August 13, 21 Data News Lab released the latest list of China's top 100 cities by GDP. In the first half of the year, Shanghai ranked first with a total economic output of 1,640.99 billion yuan. In the first half of the year, the State Grid Shanghai Electric Power Company sold 64.539 billion kWh of electricity. In other words, every kWh of electricity sold in Shanghai is associated with 25.43 yuan of GDP.

Over the past 70 years, the supporting role of the power industry in Shanghai's social and economic development can be clearly seen in the simple conversion of each kilowatt-hour of electricity to GDP.

Laying the foundation for the liberation of Shanghai

In the early days of liberation, not only did the American-owned Shanghai Electric Company and the French-owned Tramway and Light Company, the Chinese-owned Electric Company, the Zhabei Hydropower Company, the Pudong Electric Company, and the Sino-foreign joint venture Huxi Electric Company all run their own businesses, but the damage to Shanghai's electric industry caused by the Japanese invasion of China had not been completely repaired. Shanghai's electric industry was looking forward to a rebirth.

The Central People's Government quickly stabilized the situation in Shanghai from the aspects of finance, finance, materials, etc. The city, which resumed normal operation, and the power industry soon returned to a prosperous situation. At the end of 1949, Shanghai had a total power generation capacity of 259,600 kilowatts, accounting for 14% of the country. The power generation that year was 1.009 billion kilowatt-hours, accounting for 23.4% of the country. The maximum load was 216,000 kilowatts, ranking first among all cities in the country.

In June 1951, the Shanghai Municipal Government announced the first unified electricity price. On February 20, 1953, the Shanghai Electric Power Administration was established. Through military control, nationalization, public-private partnership, lease redemption and other methods, various power companies were gradually transformed into state-owned enterprises. In response to the segmentation of the power grid and the complexity of voltage levels, the Shanghai Electric Power Administration Central Dispatching Office was established on April 1, 1954 to implement unified power dispatching.

After the unified rectification, the people's power industry was reborn, laying the foundation for Shanghai's development. By the end of 1966, the installed capacity, annual power generation and maximum load of Shanghai's power grid increased to 873,900 kilowatts, 5.799 billion kWh and 1,023,000 kilowatts, respectively, an increase of 236.63%, 474.73% and 373.61% compared with 1949.

Providing pioneering force for Shanghai's reform and opening up

In 1978, the Third Plenary Session of the 11th Central Committee of the Communist Party of China kicked off the reform and opening up, and Shanghai's electric power industry ushered in a spring of development.

In 1978, Shanghai's electricity consumption was 14.768 billion kWh, with a peak load of 1.994 million kW. In 1990, the development of Pudong was officially launched, and Shanghai's reform and opening-up entered the fast lane. By 2000, the city's electricity consumption reached 55.944 billion kWh, with a peak load of 10.417 million kW. During this period, Shanghai's per capita electricity consumption remained at about 3.8 times the national per capita electricity consumption for a long time, reflecting the great role of reform and opening-up in promoting the lives of citizens.

After the reform and opening up, ensuring electricity supply to residents became an important mission of Shanghai's electric power industry. However, weak power generation capacity made power shortage a major problem that plagued Shanghai's electric power industry for about 10 years from the second half of the 1980s.

To this end, Shanghai's power industry has taken a multi-pronged approach. On the one hand, it vigorously built local power plants and increased installed capacity. At the end of 1978, the city's power generation equipment capacity was 1.9772 million kilowatts, basically the same as the annual maximum power load. Between 1985 and 1987, Shanghai raised funds to increase installed capacity by 425,000 kilowatts. The Shidongkou Power Plant, which has four 300,000-kilowatt units, was completed in May 1990. It was Shanghai's first million-kilowatt thermal power plant and the largest power plant in Shanghai at the time. By the end of 1990, there were 11 power plants in the city with a total power generation equipment capacity of 4.6867 million kilowatts. By the end of 2000, Shanghai's installed power generation capacity reached 11 million kilowatts.

On the other hand, Shanghai has also vigorously developed external power. In 1990, the ±500 kV Gezhouba-Nanqiao line was put into operation with a maximum transmission capacity of 1.2 million kilowatts. Since then, a number of 220 kV and 500 kV external power channels have been built, making the Shanghai power grid more closely connected with surrounding power grids.

In 2017, Shanghai's power grid set a record for the highest load - 32.682 million kilowatts. With the rapid development of the regional economy, the power load has increased significantly, and the additional load dividend of local units has been exhausted. Where will the power for Shanghai's subsequent development come from? The answer is a strong power grid and ultra-high voltage.

In July 2010, the ±800 kV Xiangjiaba-Shanghai UHV DC project was put into operation, marking the entry of Shanghai power grid into the UHV era. This project is the world's first UHV line independently developed, designed and constructed by my country, with a rated power of 6.4 million kilowatts, equivalent to six million-kilowatt generating units put into operation in Shanghai, playing an important role in alleviating the power shortage in Shanghai.

Adding new impetus to Shanghai's progress towards excellence

In September 2013, the 1,000 kV Huainan-Southern Anhui-Shanghai (Anhui Power Eastward Transmission Southern Half Ring) UHV project was completed and put into operation; in September 2016, the Shanghai section of the 1,000 kV Huainan-Nanjing-Shanghai (Anhui Power Eastward Transmission Northern Half Ring) UHV project was successfully energized. On September 26, 2019, the Northern Half Ring Sutong GIL (Gas Insulated Transmission Line) integrated pipeline project was completed and put into operation. These two UHV projects have been closed, forming an East China UHV AC ring network that runs through the load centers of Anhui, Jiangsu, Zhejiang, and Shanghai. Shanghai has formed a UHV power supply pattern of "two AC and one DC", and the external power transmission capacity has reached a new level.

This year, Shanghai's maximum power load was 31.32 million kilowatts, breaking the 30 million kilowatt mark for four consecutive years; the maximum external power was 16.61 million kilowatts, of which the transmission capacity of UHV lines remained at around 8 million kilowatts. External power has made an important contribution to ensuring Shanghai's safe and reliable power supply.

As of the end of August 2019, the total number of Shanghai power grid users was 10.85 million, with more than 130 ultra-high voltage and UHV substations, more than 5,500 kilometers of 220 kV and above lines, 830 kilometers of cables, and a power supply reliability of 99.9915%. Over the past 70 years, Shanghai's electric power industry has delivered an excellent performance.

This year, State Grid Corporation of China proposed the strategic goal of building a world-class energy Internet enterprise with "three types and two networks". Standing at a new starting point, State Grid Shanghai Electric Power has a new direction of struggle: taking the construction of Zhangjiang Comprehensive National Science Center as an opportunity, strengthening regional government-enterprise cooperation, rooting in the "Smart City Energy Cloud Platform" project based on the ubiquitous power Internet of Things, and using it as the "energy brain" to support smart city management. On the basis of the "six zero three guarantees" achievements in power supply guarantee at the first China International Import Expo, State Grid Shanghai Electric Power tailored the ubiquitous power Internet of Things smart power supply guarantee system for the second CIIE; creating a "diamond-shaped" distribution network with a dual-ring network structure with a 10kV switch station as the core node, dual-side power supply, and self-healing function as a specific measure to implement the strategic cooperation agreement signed between the Shanghai Municipal Government and State Grid Corporation of China.