How Energy Storage Infrastructure Ensures Modern Grid Reliability

Why is energy storage infrastructure essential for grid reliability?

Energy storage is becoming essential infrastructure because it is shifting from a supporting facility to an indispensable component of the modern power system. CATL Chairman Robin Zeng, also known as Zeng Yuqun, explained this transition at the 2026 World Energy Storage Conference in Ningde, China. This shift is necessary to handle the increasing demands of industrial and transportation electrification alongside the rapid growth of artificial intelligence data centers.

Data centers create repetitive load fluctuations because their chips operate on tightly coordinated cycles, a process that can interfere with power-plant equipment and threaten grid reliability. To address these challenges, the industry must develop end-to-end station-level solutions and move toward systematic, scenario-specific field validation.

Ensuring power system stability in the age of AI

A battery energy storage system (BESS) uses groups of batteries to store electrical energy and is the fastest responding dispatchable source of power on electric grids. According to Zeng Yuqun, CATL achieves millisecond-level precise response for high-dynamic loads by integrating high-power battery cells with an intelligent control system.

What are the global trends in storage adoption?

The global energy storage market is experiencing explosive growth. According to SNE Research, global shipments of lithium-ion energy storage batteries reached 461.3 GWh in the first half of 2026, a 71% year-over-year increase. For the first time, markets outside China accounted for more than half of the total volume, specifically reaching 56%.

This follows 2025, when China accounted for 56% of the world's new battery storage capacity additions according to Ilina Stefanova of the International Renewable Energy Agency. Zou Ciyong of the United Nations Industrial Development Organization stated that China's experience in electric vehicle batteries and energy storage offers a valuable basis for international exchange.

How do regional needs dictate storage technology choices?

Storage requirements vary by region according to Zeng Yuqun. Europe needs flexibility, U.S. data centers require high reliability, and parts of Africa and Southeast Asia rely on storage for grid stability.

Climate conditions also influence battery selection, as Zeng Yuqun noted that high-temperature regions require thermal stability while cold-climate areas need capacity retention. Meeting these regional needs requires fundamental innovations in materials and electrochemical systems.

What are the costs of integrating storage with renewables?

The cost of combining solar and wind power with battery storage in Hebei province is projected to fall to $37 per megawatt-hour by 2030. According to Stefanova, the combined cost of solar and wind power with battery storage in Hebei province was $54 per megawatt-hour in 2025. This figure is projected to fall to $37 per megawatt-hour by 2030.

What technologies are competing in the storage market?

Xiong Jijun, vice-minister of industry and information technology, reported that China's storage battery output rose 110 percent year-on-year to more than 420 gigawatt-hours in the first half of 2026. The industry hub of Ningde has seen its lithium battery output value grow from 73.4 billion yuan ($10.98 billion) in 2020 to 303.3 billion yuan in 2025.

China has built a complete industrial chain with over 90 percent of key equipment now localized. The market currently features a range of technologies, including lithium batteries, sodium-ion, and flow battery systems. During the 15th Five-Year Plan period from 2026 to 2030, China intends to increase efforts to develop these new storage types and is inviting global partners to align their technologies and standards.

How are major projects demonstrating reliability?

CATL has delivered more than 3,000 storage projects worldwide, supported by over 500 billion battery research and test data records. In South Africa, the company completed the Hydra project, which is the country's largest hybrid renewable energy facility and capable of meeting the annual electricity needs of 200,000 households.

Reliability is further evidenced by the Supernode project in Australia, which is the largest storage facility in that country. This site will supply clean power for the 2032 Brisbane Olympics.