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A New Frontier in Renewable Energy: Google Data Center Bets on New Energy Storage Batteries
Google announced on Tuesday that it will build its first data center in Minnesota, powered by a total of 1.9 GW of clean electricity, including 1.4 GW of wind power and 200 MW of solar power. The most notable technological highlight of the overall plan is the integration of iron-air battery energy storage systems from startup Form Energy.
The iron-air batteries deployed in this project have a capacity of 300MW and a total energy storage capacity of 30GWh, capable of continuously outputting rated power for 100 hours. If the project is completed as scheduled, it will become one of the world's largest battery energy storage systems, further enhancing the power supply stability of the data center during nighttime or periods of low renewable energy generation.
According to Form Energy's official website, iron-air batteries differ from mainstream lithium-ion batteries in that their energy storage mechanism does not rely on lithium chemical reactions, but rather stores and releases energy through the "oxidation and reduction" process of iron. When oxygen in the air flows through the iron particles inside the battery, the iron oxidizes (like rusting) and generates electricity in the process; during charging, the iron oxide is reduced to metallic iron through current, while oxygen is released, completing a reversible cycle.
※ Article source：TechNews 科技新報
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