- PJM, the biggest U.S. power grid operator serving 67 million people, issued an alert asking contracted customers to cut electricity as outages, overloaded lines and a prolonged heat wave strained the system.
- Heavy air‑conditioning demand and transmission congestion sent spot prices in northern Virginia — a huge data‑center hub — above $2,000/MWh this week (normally around $40/MWh).
- The situation may mean targeted cuts for customers under emergency agreements and is a reminder of how heat waves and grid congestion can suddenly hike costs and risk local reliability.
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