The Energy Bottleneck in China
April 28, 2026, marks a turning point: China announced the addition of 28 gigawatts (GW) of new data centers by 2030, bringing the total capacity to exceed 60 GW. This increase is not just a simple increase in digital capacity, but a physical transformation of the nation’s energy demand. According to an analysis by Rystad Energy, the energy consumption of the sector will reach 289 terawatt-hours (TWh) by 2030, more than double that of 2024. This figure is not just numerical: it represents a structural change in the electrical system, with a direct impact on the transmission network and generation capacity. The expansion is driven by AI and high-performance computing, which require not only energy, but also cooling infrastructure and low-latency connectivity. The operating mechanism is clear: each new data center not only consumes energy, but also generates residual heat, requiring additional energy-consuming cooling systems.
This consumption cycle translates into an acceleration of the load on the electrical grid. The increase of 28 GW is not just a figure, but a physical expansion of facilities that require dedicated connections, power transformers, and medium and high-voltage transmission lines. The fact that these facilities are concentrated in regions with already high demand, such as eastern China, increases the pressure on interconnection nodes. The system is not designed to handle such a rapid and localized increase. Consequently, the electrical grid, already under pressure from the energy transition, must face a new type of stress: not only from intermittent renewable sources, but from a continuous and intensive industrial user.
Data Center Architecture: The Data Center as a Closed System
The new data center is not simply a building with servers. It is an integrated system that includes power generators, closed-loop cooling systems, electrical backup systems, and fiber optic communication networks. A 1 GW data center requires a dedicated power plant, often with gas turbines or combined cycle power plants. The repair time for a critical failure in a cooling system can reach 72 hours, directly impacting service availability. Companies like Alibaba and Tencent are already building dedicated infrastructure in areas such as the Sichuan province, where water for cooling is abundant and hydroelectric power is available, but even here, the limit is physical: the capacity of transmission lines is not sufficient to support a 28 GW increase in just a few years.
The control node is the transmission network. Data centers cannot be connected to existing networks without structural modifications. Each new facility requires a dedicated interface with a 500 kV transformer, with an average cost of 12 million euros per unit. The connection route must be designed to withstand peak loads and ensure a latency of less than 10 milliseconds. The company responsible for the construction, such as Blue Moon Metals in Norway, is not directly involved, but the financing model is similar: a capital investment of 184 million dollars for a mining project in Northern Europe, with a 13-year plan, shows how the long-term investment logic is already established. In China, investment is accelerated by favorable tax policies, but the pace of construction is not aligned with network capacity.
Who Pays and Who Profits in the New Equilibrium
The economic consequences are already visible. Chinese utilities, such as State Grid, are seeing their network management costs increase. The average cost of transmitting one megawatt-hour from a hydroelectric power plant to an industrial city is €0.03/kWh, but with the addition of new distribution nodes, the cost rises to €0.06/kWh. This increase is not passive: it is an operating cost that affects industrial consumers. Companies that manage data centers, such as Alibaba and Tencent, have seen their revenues increase by 30% in the first quarter of 2026, thanks to the increase in prices for the use of high-intensity computing. The value of the service has increased because capacity is limited, not because demand has increased.
Conversely, traditional industries, such as steel production and chemicals, are experiencing a reduction in production capacity. China has had to reduce steel production in 14 provinces due to energy shortages. The production cost per ton of steel has increased by €120, making the industry less competitive. In addition, research and development centers, which rely on high-intensity computing, are shifting their operations to eastern China, further increasing the pressure on network nodes. The most significant data is that 2.3% of the total electricity demand is already attributed to data centers, a value that could reach 5% by 2030 if no intervention is made.
Closing: Operational Indicators for the Next Semester
China is not facing a digital crisis, but a crisis of power. The operational mechanism is clear: the expansion of data centers is forcing the electricity grid towards a physical limit. Who will pay the cost? Traditional industries, end consumers, and the national energy system. The beneficiaries are technology companies, which have increased revenues, and renewable energy suppliers, which are seeing increased demand for capacity. The systemic cost is already in place, and it is not a matter of politics, but of physics. To monitor the situation in the coming months, two indicators are crucial: the energy traffic in the transmission network of Northeast China, which must increase by 15% to support the new plants, and the price of industrial energy in Shanghai, which must remain below €0.07/kWh to avoid production cuts. If these indicators exceed current levels, the system is overloaded. The transition is not only digital, but also energetic, and the cost is already visible in the electrical circuits.
Photo by Rosy Ko on Unsplash
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