QAZAQ GREEN.  China is expanding renewable energy at an unprecedented pace, reshaping its power system as it works toward peak carbon emissions before 2030 and carbon neutrality by 2060. The country added 360 GW of wind and solar capacity in 2024, more than half of global new installations, bringing total capacity to 1.4 TW. Renewable generation rose to 366 TWh, making wind and solar the leading sources of new electricity, according to the World Economic Forum.

The rapid scale-up is driving the spread of storage technologies, virtual power plants, electric mobility and low-carbon industrial parks. But integrating such volumes of variable energy has exposed significant technical, economic and market pressures.

System pressures

Renewables are growing faster than the flexible capacity needed to stabilize the grid. Weather-dependent output increases the need for storage, responsive generation and digital tools that keep supply and demand in balance. China’s best wind and solar resources are concentrated in the northwest, far from major coastal demand centres, placing heavy demands on long-distance transmission and regional interconnection. Local distribution grids are also shifting toward two-way operation as rooftop solar, electric vehicles and flexible loads expand.

Economic pressures

Falling generation costs do not eliminate the need for investment in grids, storage and backup resources. Facilities producing their own electricity still rely on the broader system for stability and frequency control, raising questions about how to distribute system costs fairly. The key issue is ensuring that lower renewable costs translate into lower overall system costs.

Market pressures

Electricity relies on multiple interlinked markets. If capacity, flexibility and environmental value are not properly priced, investment signals weaken. China is refining market design by developing capacity and ancillary service markets, expanding green power and certificate trading, and clarifying the role of new actors including storage operators and aggregators.

China’s response

China is combining large-scale deployment with system upgrades. Utility-scale renewable bases continue to grow, alongside distributed solar in cities and industrial zones. Over $80 billion was invested in grid infrastructure in 2024 alone, including new UHV lines connecting remote supply with eastern demand.

Flexibility is being expanded through retrofitted coal units, new gas and pumped-storage plants and AI-based forecasting tools such as the Guangming Power model.

At the market level, China is advancing a unified national electricity market with cross-regional trading, long-term contracts, spot markets and ancillary services. Renewables now participate fully in market-based transactions, while green power and certificate trading continue to scale. Policy frameworks for virtual power plants and integrated generation–grid–demand–storage projects define the responsibilities of new market actors.

Global lessons

China’s experience highlights several principles: consistent long-term goals; early and strategic grid planning; markets that recognise flexibility, capacity and environmental value; and sustained investment in innovation to manage the energy trilemma of cost, security and sustainability.

Global outlook

China’s integrated approach – linking clean generation, flexible grids, active demand and storage – demonstrates how future power systems can operate as coordinated ecosystems. As other countries accelerate renewable deployment, China’s evolving model offers a reference point for building reliable and scalable clean energy systems.