Largest U.S. power grid PJM escalates emergency actions to avoid blackouts CNBC Millions bracing for severe storms as heat wave continues ABC News - Breaking News, Latest News and Videos Heat and severe storms damper July Fourth celebrations, leave hundreds of thousands without power CBS News Storms Cause Power Outages for 1 Million in Midwest, Northeast and Ontario The New York Times Power grid tested by consumer demands for AC, online data: Professor NewsNation
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