The five flagship listed companies of China's major power generation groups—GD Power, Huaneng Power International, Huadian Power International, China Power International Development, and Datang International Power Generation—have disclosed key operational data, including installed capacity and electricity generation, in their recent annual reports.

Specific disclosures varied by company: GD Power, Huaneng Power International, and Datang International Power Generation reported total installed capacity figures. GD Power and Datang International Power Generation provided breakdowns of newly added capacity for thermal power, hydropower, and new energy sources. Huadian Power International disclosed electricity supplied to the grid, while China Power International Development reported electricity sales volume.

A summary of the data is as follows:

**GD Power** - Electricity supplied to grid: 444.384 billion kWh, up 1.76% year-on-year - Total installed capacity: 126.5372 GW (Thermal: 82.273 GW; Hydropower: 14.9506 GW; Wind: 10.4952 GW; Solar: 18.8184 GW) - Newly added capacity: Approximately 3.2958 GW (Thermal: +2.98 GW; New Energy: +0.3158 GW)

**Huaneng Power International** - Electricity supplied to grid: 437.563 billion kWh, down 3.39% year-on-year - Total installed capacity: 155.869 GW (New Energy: 45.687 GW) - Newly added capacity: 12.055 GW (New Energy: 7.862 GW)

**Huadian Power International** - Electricity supplied to grid: 246.443 billion kWh, an increase of 18.22% compared to the previously announced figure for the same period last year.

**China Power International Development** - Total electricity sales volume: 12,633,286.1 MWh, down 1.27% year-on-year.

**Datang International Power Generation** - Electricity supplied to grid: 273.1092 billion kWh, up approximately 1.41% year-on-year. - Total installed capacity: 82.70252 GW (Thermal: 56.65854 GW; Hydropower: 9.20473 GW; Wind: 11.34489 GW; Solar: 6.49436 GW) - Newly added capacity: 86.192081 GW (Coal-fired Thermal: 49.134 GW; Gas-fired Thermal: 9.47938 GW; Hydropower: 9.20473 GW; Wind: 11.19689 GW; Solar: 7.177081 GW)

Note: Total installed capacity data is as of December 31, 2025. Newly added capacity is calculated based on full-year 2025 data.

Further details are provided below.

**GD Power** In 2025, GD Power's power generation reached 467.465 billion kWh, with electricity supplied to the grid amounting to 444.384 billion kWh. These figures represent increases of 1.74% and 1.76%, respectively, compared to the previous year. The proportion of electricity traded in the market reached 92.62% of total grid supply. The average on-grid tariff was 400.66 RMB/MWh. The company attributed the growth in generation to a generally balanced national power supply and demand situation in 2025, with tighter conditions in North and East China during peak winter demand periods, coupled with the commissioning of new generating units. As of December 31, 2025, the company's installed capacity stood at 126.5372 GW. In the fourth quarter of 2025, thermal power capacity increased by 2.98 GW, while new energy capacity increased by 0.3158 GW.

**Huaneng Power International** In 2025, Huaneng Power International's electricity supplied to the grid in China was 437.563 billion kWh, a decrease of 3.39% year-on-year. The average settled on-grid tariff was 477.08 RMB/MWh, down 3.48%. The proportion of electricity traded in the market was 85.43%, a decrease of 1.92 percentage points from the previous year. The company stated the decrease in generation was primarily due to its ongoing transition towards green and low-carbon development, leading to continuous growth in wind and solar capacity and a corresponding year-on-year increase in new energy generation. However, this growth displaced coal-fired generation, resulting in a decline in output from coal-fired units. In Q4 2025, the company decommissioned several thermal units but also acquired new energy assets, adding 131 MW of capacity. For the full year 2025, the company added 12.055 GW of new controllable capacity, of which 7.862 GW was from new energy sources. It also retired 1.19 GW of capacity. As of December 31, 2025, its total controllable installed capacity reached 155.869 GW, with new energy accounting for 45.687 GW.

**Huadian Power International** For the full year 2025, Huadian Power International and its subsidiaries generated 262.27 billion kWh of electricity, an increase of 17.81% compared to the previously announced figure for the prior year. Electricity supplied to the grid was 246.443 billion kWh, up 18.22% on the same basis. The company noted that the primary reason for the year-on-year decrease in generation and grid supply, after adjusting for retrospective revisions, was the continuous increase in new energy capacity, which reduced the operating hours of coal-fired power units. The preliminary average on-grid tariff for 2025 was approximately 513.29 RMB/MWh.

**China Power International Development** China Power International Development announced that, based on preliminary statistics, the consolidated electricity sales volume for December 2025 was 10,731,050 MWh, a decrease of 2.31% year-on-year. The total consolidated electricity sales volume for the year ended December 31, 2025, was 126,332,861 MWh, down 1.27% compared to the previous year.

**Datang International Power Generation** According to preliminary statistics, Datang International Power Generation and its subsidiaries supplied approximately 273.1092 billion kWh of electricity to the grid in 2025, an increase of about 1.41% year-on-year. The company attributed this growth to steady increases in overall electricity demand, the continued expansion of its new energy capacity—which led to a significant rise in new energy generation—and better hydropower output compared to the previous year. As of December 31, 2025, the company's average on-grid tariff was approximately 434.82 RMB/MWh (including tax), down about 3.68% year-on-year. The volume of electricity traded in the market was about 235.776 billion kWh, accounting for approximately 86.33% of total grid supply. The company's total installed capacity reached 86.192081 GW by the end of 2025. During the year, it added 7.125854 GW of new capacity.