Amid high heat, power demand in PJM territory could set records

By: Christine Condon

Outlets: Maryland Matters

Published: June 29, 2026

Words: 898

Last Updated: 3 weeks, 3 days ago

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As a powerful heat wave threatens much of the eastern United States this week, the nation’s largest electric grid is warning of record-high power demand.

Beginning on Tuesday and extending through Friday, the entire 13-state PJM Interconnection grid, which includes Maryland, will be operating under a hot weather alert, with temperatures climbing toward the triple digits in Baltimore and beyond. With the system under increased strain, adverse events such as blackouts are more likely …

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