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Through China, Kilowatt-hour and Renewable energy
Most of the electricity in China comes from coal power, which accounted for 62% of electricity generation in 2021 and is a big part of greenhouse gas emissions by China. Power generated from renewable energy has also been continuously increasing in the country. The national electricity generation from renewable energy reached 594.7 TWh in Q1 2023, an increase of 11.4% year-on-year, including 342.2 TWh of wind and solar power, up 27.8% year-on-year.
In 2023, China's total installed electric generation capacity was 2.92 TW, of which 1.26 TW was renewable, including 376 GW from wind power and 425 GW from solar power. As of 2023, the total power generation capacity for renewable energy sources in China is at 53.9%. The rest was mostly coal capacity, with 1040 GW in 2019. Nuclear also plays an increasing role in the national electricity sector. As of February 2023, China has 55 nuclear plants with 57 GW of power in operation, 22 under construction with 24 GW and more than 70 planned with 88 GW. About 5% of electricity in the country comes from nuclear energy.
China has two wide area synchronous grids, the State Grid and the China Southern Power Grid. The northern power grids were synchronized in 2005. Since 2011 all Chinese provinces are interconnected. The two grids are joined by HVDC back-to-back connections and point-to-point links.
China has abundant energy reserves with the world's fourth-largest coal reserves and massive hydroelectric resources. There is however a geographical mismatch between the location of the coal fields in the northeast (Heilongjiang, Jilin, and Liaoning) and north (Shanxi, Shaanxi, and Henan), hydropower in the south-west (Sichuan, Yunnan, and Tibet), and the growing industrial load centers of the east (Shanghai-Zhejiang) and south (Guangdong, Fujian).
History
In April 1996, an Electric Power Law was implemented, a major event in China's electric power industry. The law set out to promote the development of the electric power industry, to protect the legal rights of investors, managers, and consumers, and to regulate the generation, distribution, and consumption.
Before 1994, electricity supply was managed by electric power bureaus of the provincial governments. Now utilities are managed by corporations outside of the government administration structure.
To end the State Power Corporation's (SPC) monopoly of the power industry, China's State Council dismantled the corporation in December 2002 and set up 11 smaller companies. SPC had owned 46% of the country's electrical generation assets and 90% of the electrical supply assets. The smaller companies include two electric power grid operators, five electric power generation companies, and four relevant business companies. Each of the five electric power generation companies owns less than 20% (32 GW of electricity generation capacity) of China's market share for electric power generation. Ongoing reforms aim to separate power plants from power-supply networks, privatize a significant amount of state-owned property, encourage competition, and revamp pricing mechanisms.
In recent history, China's power industry is characterized by fast growth and an enormous installed base. In 2014, it had the largest installed electricity generation capacity in the world with 1505 GW and generated 5583 TWh China also has the largest thermal power capacity, the largest hydropower capacity, the largest wind power capacity and the largest solar capacity in the world. Despite an expected rapid increase in installed capacity scheduled in 2014 for both wind and solar, and an expected increase to 60 GW in nuclear by 2020, coal will still account for between 65% and 75% of capacity in 2020.
In Spring 2011, according to The New York Times, shortages of electricity existed, and power outages should be anticipated. The government-regulated price of electricity had not matched rising prices for coal.
In 2020, Chinese Communist Party general secretary Xi Jinping announced that China aims to go carbon-neutral by 2060 in accordance with the Paris climate accord.
In 2024, China's National Energy Administration ceased publishing data on power utilization by each generating source, impeding analysis of grid constraints.
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Production and capacity
Electricity generation in China by source in TWh:
ChinaEnergyPortal.org
China Energy Portal publishes Chinese energy policy, news, and statistics and provides tools for their translation into English. Translations on this site depend entirely on contributions from its readers. 2020 electricity & other energy statistics (preliminary)
(Note that change in generation capacity is new installations minus retirements.)
National Bureau of Statistics of China
The official Statistics available in English are not all up to date. Numbers are given in "(100 million kw.h)" which equals 100 GWh or 0.1 TWh.
Storage
Energy storage plays a critical role in China's energy landscape, serving as a key enabler for the large-scale integration of renewable energy sources, such as wind and solar power, into the national grid. By mitigating the variability and intermittency of renewable energy, storage technologies facilitate a more stable and reliable power supply. China invests heavily in various storage solutions, including battery storage systems, pumped hydro storage, among others. These technologies not only help in balancing supply and demand but also in improving the overall efficiency and resilience of the power system.
By mid-2025, China passed 100 GW batteries (164 GW total storage) and added capacity market payments. In 2023, China's energy storage industry saw a dramatic surge, with its capacity expanding nearly fourfold due to advancements in technologies such as lithium-ion batteries. This remarkable growth was fueled by an investment exceeding 100 billion yuan (around US$13.9 billion) in recent years. By the close of 2023, the capacity within the sector of new-type energy storage soared to 31.39 gigawatts (GW), achieving an increase of over 260% compared to the previous year and almost a tenfold rise since 2020. The sector encompasses a range of innovative technologies, including electrochemical energy storage, compressed air energy storage, flywheel energy storage, and thermal energy storage, while pumped hydro storage is not included in this category.
Demand response
China's government has introduced a number of policies to promote the development of demand response, such as the 2012 "Interim Measures for the Management of Pilot Cities with Central Fiscal Funds to Support Electricity Demand Side Management." The DR mechanism incentivizes electricity users to adjust their consumption patterns based on signals from grid operators, either reducing demand during peak hours (peak shaving) or increasing demand during off-peak hours (valley filling). This flexibility is critical to maintaining grid stability and ensuring efficient use of energy resources.
China's approach to DR has included pilot projects in cities like Suzhou, Beijing, and Shanghai, focusing on tariff reforms and pricing strategies to encourage participation. Despite these efforts, challenges remain, such as the low participation rate of grid companies and the lack of transparency in grid operation data, hindering the widespread adoption of DR.
The types of demand response in China are:
- Invitation DR: Local governments or grid companies invite consumers to participate in DR events, offering financial incentives for adjusting their load during specified times.
- Real-time DR: Requires participants to respond to demand response signals in real-time, often with minimal notice, to address immediate grid needs.
- Economic DR: Utilizes price signals, such as peak and off-peak rates, to motivate consumers to voluntarily adjust their energy usage according to the cost of electricity.
Transmission infrastructure
The central government has made the creation of a unified national grid system an economic priority to improve the efficiency of the whole power system and reduce the risk of localised energy shortages. It will also enable the country to tap the hydro potential from western China to meet demand from the eastern coastal provinces. China is planning for smart grid and related Advanced Metering Infrastructure.
Ultra-high-voltage transmission
The main problem in China is the voltage drop when power is sent over very long distances from one region of the country to another.
Long distance inter-regional transmission has been implemented by using ultra-high voltages (UHV) of 800 kV, based on an extension of technology already in use in other parts of the world.
In 2015, State Grid Corporation of China proposed the Global Energy Interconnection, a long-term proposal to develop globally integrated smart grids and ultra high voltage transmission networks to connect over 80 countries. The idea is supported by CCP General Secretary Xi Jinping and China in attempting to develop support in various internal forums, including UN bodies.
Companies
In terms of the investment amount of China's listed power companies, the top three regions are Guangdong province, Inner Mongolia Autonomous Region and Shanghai, whose investment ratios are 15.33%, 13.84% and 10.53% respectively, followed by Sichuan and Beijing.
China's listed power companies invest mostly in thermal power, hydropower and thermoelectricity, with their investments reaching CNY216.38 billion, CNY97.73 billion, and CNY48.58 billion respectively in 2007. Investment in gas exploration and coal mining follow as the next prevalent investment occurrences.
Major players in China's electric power industry include:
The five majors, and their listed subsidiaries: The five majors are all SOEs directly administered by SASAC. Their listed subsidiaries are substantially independent, hence counted as IPPs, and are major power providers in their own right. Typically each of the big 5 has about 10% of national installed capacity, and their listed subsidiary has an extra 4 or 5% on top of that.
- China Datang Corporation
- parent of Datang International Power Generation Company (SEHK: 991; SSE: 601991)
- China Guodian Corporation ("Guodian")
- parent of GD Power Development Company (SSE: 600795)
- China Huadian Group
- parent of Huadian Power International Co., Ltd.
- China Huaneng Group
- parent of Huaneng Power International (NYSE:HNP)
- State Power Investment Corporation ("SPIC")
- parent of China Power International Development Limited ("CPID", 2380.HK)
Additionally, two other SOEs also have listed IPP subsidiaries:
- the coalmine owning Shenhua Group
- parent of China Shenhua Energy Company (SEHK: 1088, SSE: 601088)
- China Resources Group ("Huarun")
- parent of China Resources Power Holdings Company Limited ("CRP", SEHK: 836)
Secondary companies:
- Sieyuan Electric Co., Ltd.
- Shenzhen Energy Co., Ltd.
- Guangdong Yuedian Group Co., Ltd.
- Anhui Province Energy Group Co., Ltd.
- Hebei Jiantou Energy Investment Co., Ltd.
- Guangdong Baolihua New Energy Stock Co., Ltd.
- Shandong Luneng Taishan Cable Co., Ltd.
- Guangzhou Development Industry (Holdings) Co., Ltd.
- Chongqing Jiulong Electric Power Co., Ltd.
- Chongqing Fuling Electric Power Industrial Co., Ltd.
- Shenergy Company (SSE: 600642), Shanghai.
- Shenergy Group, Shanghai.
- Sichuan Chuantou Energy Stock Co., Ltd.
- Naitou Securities Co., Ltd.
- Panjiang Coal and Electric Power Group
- Hunan Huayin Electric Power Co., Ltd.
- Shanxi Top Energy Co., Ltd.
- Inner Mongolia Mengdian Huaneng Thermal Power Co., Ltd.
- SDIC Huajing Power Holdings Co., Ltd.
- Sichuan MinJiang Hydropower Co., Ltd.
- Yunnan Wenshan Electric Power Co., Ltd.
- Guangxi Guidong Electric Power Co., Ltd.
- Sichuan Xichang Electric Power Co., Ltd.
- Sichuan Mingxing Electric Power Co., Ltd.
- Sichuan Guangan Aaa Public Co., Ltd.
- Sichuan Leshan Electric Power Co., Ltd.
- Fujian MingDong Electric Power Co., Ltd.
- Guizhou Qianyuan Power Co., Ltd.
Nuclear and hydro:
- China Three Gorges Corporation
- China Guangdong Nuclear Power Group
- China Yangtze Power (listed)
- Sinohydro Corporation an engineering company.
- Guangdong Meiyan Hydropower Co., Ltd.
Grid operators include:
- State Grid Corporation of China
- China Southern Power Grid
- Sieyuan Electric
- Wenzhou CHINT Group Corporation ("Zhengtai")
Creation of a spot market has been suggested to properly use energy storage.
Consumption and territorial differences
More than a third of electricity is used by industry. China consists of three largely self-governing territories: the mainland, Hong Kong, and Macau. The introduction of electricity to the country was not coordinated between the territories, leading to partially different electrical standards. Mainland China uses type A and I power plugs with 220 V and 50 Hz; Hong Kong and Macau both use type G power plugs with 220 V and 50 Hz. Inter-territorial travelers may therefore require a power adapter.


