China's electricity system reaches a milestone in 2025 with record clean energy expansion and demand growth

China’s electricity system reached a landmark scale in 2025, as demand and clean‑energy buildout together reshaped the nation’s generation mix and grid operations.

Annual consumption hit 10,368.2 TWh in 2025, a 5% year‑on‑year rise that, according to the National Energy Administration, makes China the first single country to exceed 10,000 TWh of annual power use. The NEA said the services sector and residential demand together accounted for half of the increase, with services up 8.2% to 1,994.2 TWh and household consumption rising 6.3% to 1,588.0 TWh. Industry remains the dominant user, the NEA added, with the secondary sector consuming 64% of the total at 6,636.6 TWh. These figures were widely reported, including by S&P Global.

The pattern of growth illustrates an economy shifting away from legacy heavy industries toward advanced manufacturing and digital services. State Grid Jiangsu data cited by the NEA show computing and electronics consumption in Jiangsu exceeded 50 TWh for the first time, overtaking steel and chemicals; regions such as Ningbo recorded double‑digit growth in EV manufacturing, aerospace and advanced equipment. Electric vehicle charging and battery swapping surged nearly 49% nationwide, and data‑centre demand jumped, with one Huawei Cloud facility in Gui’an up 56.9%, the NEA said.

At the same time as demand climbed, China recorded its first decline in thermal power output in a decade. National Bureau of Statistics data show thermal generation fell about 1% in 2025 to 6.29 trillion kWh, with December down 3.2% year‑on‑year. Hydropower rose 2.8% and nuclear increased 7.7% for the year. The government and energy agencies note a methodological difference: the NBS series covers larger industrial enterprises and thus understates some small‑scale renewable output, which helps explain why the NEA reports total generation higher than the NBS figure.

Capacity expansion has been dramatic. By the end of November 2025, installed wind and solar reached roughly 1,760 GW and non‑fossil sources accounted for just over 60% of total installed capacity, the NEA reported. That milestone sits alongside government targets to lift total installed capacity to around 3,600 GW by 2025 and to have non‑fossil sources make up about 60% of that fleet, as set out in the NEA’s Energy Work Guidance and reiterated on the State Council’s English portal. China Daily reported a related benchmark earlier in 2025: non‑fossil capacity passing 2 billion kilowatts (2,000 GW) by the end of February, representing 58.8% of total capacity at that point and reflecting more than 100% cumulative growth since 2021.

Deliverability and system flexibility have been addressed in parallel. Four new ultra‑high voltage (UHV) transmission lines entered service in 2025, taking cross‑provincial transmission capability to about 370 GW and bringing the national UHV fleet to 46 lines, the NEA said. Storage deployment accelerated rapidly: pumped hydro surpassed 66 GW and “new” storage technologies exceeded 100 GW, a more than 30‑fold increase versus the end of 2020, according to NEA data. These investments aim to reduce curtailment and integrate large volumes of variable wind and solar from resource‑rich western provinces to high‑demand eastern and southern load centres.

The expansion of clean capacity has not eliminated tensions between climate objectives and industrial realities. Despite falling thermal generation, coal mining output reached a record high in 2025, underlining that coal remains central to some industrial and power system contingencies. Industry analysts cited by EnergyNews and the Sxcoal analytics operator argue that the structural shift toward renewables and storage will be hard to reverse, but supply‑side and security considerations will keep coal production elevated in the near term.

For industrial decarbonisation practitioners the implications are multiple. Rapid electrification of services, manufacturing and transport is creating sustained incremental demand, even as the grid becomes much cleaner on a capacity basis. System planners and large industrial consumers must now design for tighter interactions with variable renewables and increasingly sophisticated flexibility markets, including procurement of long‑duration storage and demand‑side response. Government goals for 2025 have pushed asset owners, grid operators and equipment suppliers into accelerated deployment cycles; the near‑term challenge is aligning generation, transmission and storage roll‑outs with the changing geographic pattern of load growth to avoid bottlenecks and curtailment.

According to the NEA and government announcements, China’s 2025 accomplishments reflect both record deployment of non‑fossil capacity and the start of what officials present as a managed structural decarbonisation of the power sector. At the same time, official statistics and industry observers signal that policy and market design will need to continue evolving to reconcile high electricity demand growth, the persistence of coal production and the operational realities of a grid dominated by variable renewables.