CYG SUNRI CO., LTD.(“CYG SUNRI” for short) is a famous enterprise that specializes in power system automation and smartization, and is dedicated to innovating power source technology and providing high-quality services all over the world. It was founded with restructuring of the Bay Protection and Integrated Substation Automation Research Institute Office of the Power Automation Research Institute of the Ministry of Power Industry. Our business scope covers over 60 countries across the world, and is one of the main partners of the State Grid Corporation of China, China Southern Power Grid Corporation and other main energy companies.


CYG SUNRI focuses on scientific research, to maintain the advanced level and integrity of products and solutions with cutting-edge technology and exquisite craftsmanship.

Through constant technical innovation, we have established a series of proven power system automation technical systems with proprietary intellectual property rights, with its grid protection control and automation technology having been successfully applied in over 15,000 substations around the world. The first created field protection technology is leading the innovation and development of smart grid; over 60000 power distribution automation products have been applied all over the country; the primary and secondary equipment integration technology has upgraded the operation standard, operation and maintenance quality and efficiency of power distribution equipment, serving the intelligent development of power distribution grid. We have also participated many times in the formulation of industrial standards for electric vehicle charging facilities, taking the lead in the awarded contract amount in high-end customer markets of the State Grid Corporation of China and China Southern Power Grid Corporation; the technology and integration service in new energy field is developing rapidly, with accumulated installed capacity exceeding 50GW; the serial products of intelligent tools have greatly raised the technical reliability and working efficiency; the smart primary equipment products, with its advantages of control and protection technologies , have won high recognition from customers



Eye-catching in achievements, CYG SUNRI has never been absent in benchmark projects and national key projects in the power industry.

CYG SUNRI has actively undertaken a large number of national key power transmission and transformation projects, such as: Yangtze River Three-Gorge Project, the West-East Power Transmission Project, the Sichuan-Tibet Grid Connection, Central Tibet Grid Connection projects, the 1,000kV UHV Demonstration Project, South Kumul ±800kV DC Power Transmission, 750kV Project in the Northwest, the 500kV Luxi Converter Station in Yunnan, Shenyang-Dalian Expressway and Beijing Olympic Games. In the meantime, CYG SUNRI has also completed with high efficiency many key projects in areas of petrochemical (Daqing Petrochemical and Shengli Oilfield), rail transit (Harbin – Qiqihar dedicated passenger line and Beijing-Shenyang Express Railway, etc.), iron, steel and metallurgy industry (Shougang Steel, etc.), new energy power generation (1GW PV in Datong coal mining subsidence area, 1GW PV in Yangquan coal mining subsidence area, and 150MW offshore wind power project of Longyuan in Jiangsu), receiving unanimous good appraisal in the industry. In addition, CYG SUNRI has gradually spread its business to overseas market, and successfully participated in a number of key international projects and “key strategic projects on the Belt and Road”, such as the first smart substation in Thailand NONGKI, the capital power distribution project in the grid of Ethiopia, the first ±800kV DC power transmission project in the grid of India, the 220kV offshore and land cable project in Crimea, and the Matiari-Lahore 660kV DC power transmission project in Pakistan.



With high quality as the standard and technical innovation as the fundamental driving force, CYG SUNRI has endeavored to lay the foundation for the rapid development.

As the leading enterprise in the smart grid sector of CYG Group, CYG SUNRI has its headquarters at Shenzhen, with a total of 11 subsidiaries worldwide, registered capital of $105 million, total area of 180,000 square meters and 3,000 employees. It has realized the conversion of scientific and technical achievements for $3 billion. We have scientific research and experiment environment of world-class complete-set production process equipment and world leading static simulation laboratory for power system. CYG SUNRI is a “national level hi-tech enterprise” certified by the authoritative departments of the state, a “key software enterprise in the national planning”, an “enterprise with AAA credit standing in the software and information service industry of China”, and an “leading enterprise in the industry in Shenzhen City”. With constant technical innovation capability, CYG SUNRI has achieved comprehensive development in R&D, marketing and engineering service, obtaining good economic return and social benefit. At present, we have obtained professional qualifications such as “Grade I qualification for information system integration and service”, “Grade IV for software capability maturity model integration (CMMI)”, “Qualification as an engineering consultancy institution”, “Specialized qualification for engineering design in power industry (power transmission, power transformation, new energy power generation and wind power)”, “EPC qualification for power project construction” and “Permit for power facilities installation (maintenance and testing)”. Aiming at realizing the maximum return for customers, CYG SUNRI provides a full array of products and solutions for customers, and the integrated project services covering consultancy, survey, planning, feasibility study, design, EPC and full life-cycle operation and maintenance.



In the future, on the way to serve global energy and contribute to the development of national hi-tech industries, CYG SUNRI will maintain its advantages in technology, quality, service and management, continually pursue for excellence, promote innovation and development in the energy field and further advance the smart and professional development of the industry.







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