SGCC was founded on Dec. 29th, 2002 as a pilot state-owned corporation by the State Council. As a backbone state-owned enterprise that may affect national energy safety and economic lifelines, SGCC's core business is to build and operate power grids and provides secure and reliable power supply for the development of the society. With a registered capital of RMB 200 billion yuan and service area covering 26 provinces,autonomous regions and municipalities directly under the jurisdiction of the Central Government which equals to 88% of the national territory. SGCC carries out the president responsibility system. The president is the legal corporate representative of SGCC. By the end of 2005, SGCC accumulated a total asset of RMB1176.7 billion yuan with a debt-asset ratio of 61.96%, and possessed 195,899 km of 220kV and above transmission lines with a transforming capacity up to 616.64 GVA. SGCC has 1.502 million employees and serves 128 million customers. In 2005, SGCC sold electric power up to 1464.6 TWh and achieved an operation income of RMB 721.4 billion yuan with a net profit of RMB14.4 billion yuan profit & tax of RMB 60.4 billion yuan. SGCC was ranked the 40th in the Fortune Global 500 in 2005.

Jiangsu Electric Power Co. is a state-owned electric company that is mainly engaged in the constructions, management, sales & maintenance of pwer grids. The company also handles the construction, building, research, management & power-related design of electric companies within Jiangsu Province. The company was founded in December, 1988 and is headquartered in Jiangsu, CN.

China Xd is research, develops, manufactures, tests, and inspects a range of equipment for voltage, extra-high voltage, and ultra-high voltage power transmission and distribution. Their products such as include high-voltage DC and AC systems, voltage capacitor transformers, converter transformers, shunt capacitors, smoothing reactors, gas-insulated switchgear, high-voltage disconnectors, HGIS products, and filter capacitors.

Shandong Taikai Transformer Co. Ltd., a subsidiary of Taikai Electric Group Co. Ltd., is a Chinese company. The firm manufactures and distributes transformers, reactors, power transmission and transformation equipment.

State Grid Sichuan Electric Power Company Electric Power Research Institute, established on 2016-07-28, Business scope includes(The following scope does not include pre-licensed items,Post-licensing projects operate on the basis of licenses or approval documents)Undertake(build,try)power facilities,Environmental monitoring,Technology intermediary service,Professional technical service industry(detection,test,test,identification,Metering service),Technical extension services.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Zhongdian Purui Power Engineering Co. Ltd., part of NARI Technology Co., Ltd., is a Chinese company that provides engineering services.

Dalian North Instrument Transformer Group Co. Ltd. is a private company headquartered in Dalian, China, that manufactures & Exports industrial instruments.

Guilin Power Capacitor Co. Ltd., a subsidiary of Guangzhou Baiyun Electric Equipment Co., Ltd., is a Chinese company that manufactures and sells capacitor voltage transformers. Guangzhou Baiyun Electric Equipment Co., Ltd. acquired Guilin Power Capacitor Co. Ltd. from Guangdong Baiyun Electric Group Co. Ltd. on February 14, 2018 for $120.51 million.

Guangdong Power Grid Co., Ltd., established on 2001-08-03, Business scope includes investment,Construction, operation and management of Guangdong Power Grid,Operating related power transmission and distribution business;Participate in investment,Construction and operation related cross-regional power transmission and transformation and networking projects;Engaged in the purchase and sale of electricity,Responsible for electricity trading and dispatching;electric equipment,Sales of electrical equipment,debugging,Inspection and Test;Conduct scientific research related to grid operation and electricity supply,technical supervision,technology development,Electricity Production Scheduling Information Communication,consultation service,Electricity Education and Business Training.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

East China Electric Power Research Institute Co., Ltd., established on 1991-01-09, Business scope includes general items:Research and development of online energy measurement technology;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;software development;Research and development of high-efficiency and energy-saving technologies in the power industry;Emerging energy technology research and development;Research and development of online energy monitoring technology;Research and development of energy recovery system;Internet of things technology research and development;Internet of Things Technology Services;Non-residential real estate leases;Machinery and Equipment Leasing;Photovoltaic power generation equipment rental;Science popularization service;Conference and Exhibition Services;advertising(non-broadcasting station,television station,Newspaper Publishing Unit);Sales of intelligent power transmission and distribution and control equipment,Electrical Equipment,software.(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license) licensed items:Power facility installation,undertook,Take the test;Various construction activities;Certification Services.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,The specific business items are subject to the approval documents or licenses of relevant departments)

EnglishCo offers digital english learning service.

Guangdong Power Grid Co., Ltd. Foshan Power Supply Bureau, established on 2002-04-03, Business scope includes power grid operation and management,Power Plant Operation and Management;Power purchase and sale,Power Grid and Trading Services,Power engineering construction;Operating the power information industry;Sales:electric equipment,Electrical equipment.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

State Grid Henan Electric Power Company Electric Power Research Institute, established on 2006-01-18, Business scope includes power technical services,Power Consulting Services;environmental test.

Wuxi Lianda Electric Co., Ltd., established on 2001-11-23, Business scope includes licensed projects:Import and export;Technology Import and Export;Import and export agency(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,Specific business projects are subject to approval results) General project:Manufacturing of capacitors and their supporting equipment;electrical equipment repair(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

State Grid Shanghai Municipal Electric Power Co. (doing business as SMEPC) is a company headquartered in Shanghai, China and ultimately controlled by the Government of China. The firm engages in electricity distribution.

Electric Power Research Institute of Yunnan Power Grid Co., Ltd., established on 2005-12-05, Business scope includes commissioning of electrical engineering,detection,Laboratory analysis and performance test;Power new technology product development,Production,Sales;information Technology,Information system development,transfer,training;Power Technology Consulting Services.

Wuhan Gelanruo Intelligent Technology Co., Ltd., established on 2018-03-16, Business scope includes general items:Intelligent products,Power detection products,Optoelectronics,Research and development of opto-mechanical-electrical integration system,design,Install,Production and Wholesale and Retail;Data processing and storage services;electronic product(Does not include electronic publications),Instrumentation,electric equipment,Design of automation equipment,to develop,Production and Wholesale and Retail;soft,Hardware development, wholesale and retail;Power transmission and distribution and control equipment,Research and development of high and low voltage power equipment,design,construction,Install,Production and Wholesale and Retail;Electronic and Intelligent Engineering Design,construction,Install;Power technology research and development;Electrical Equipment Condition Assessment;computer system integration,Technical Consulting and Technical Services.(Projects subject to approval by law,Business activities can only be carried out after approval by relevant departments)(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Anhui Province Water Resources Research Institute is a private company headquartered in China. The firm provides research and development services.

State Grid Hebei Electric Power Co., Ltd. Electric Power Research Institute, established on 1990-06-02, Business scope includes technical supervision of power system,technology development,Technical Training,it,Power technical service,Electric power construction adjustment test;Power Technology Consulting Services;own equipment,Realtor.

Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd., established on 2002-04-08, Business scope includes power grid operation and management,Operation and management of peak-shaving and frequency-regulating power plants;Power purchase and sale,Power Grid and Trading Services,Power engineering construction,Information industry related to electric power management,electric equipment,Sales of electrical equipment.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)