MDE warns backup generators and NOx limits shape air permitting for data centers
MDE staff said data centers commonly install many backup diesel generators, which raises ozone-forming NOx concerns; Maryland law limits generator operation and MDE holds community hearings when air permits are proposed.
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State staff told Baltimore County that backup generators are a frequent air-permitting issue for data centers and can raise NOx and ozone concerns. "They do install significant numbers of backup generators in the data centers we've seen in Frederick or around a 100 generators, a data center," Zach said, noting that Maryland places strict limits on how much those generators can operate for testing and exercising.
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