What is the desired relief timeframe that PJM members should aim for?

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Multiple Choice

What is the desired relief timeframe that PJM members should aim for?

Relief timeframe is about how quickly operators should bring a stressed system condition back to acceptable limits. In PJM practice, 30 minutes is the standard target because it strikes a practical balance: it’s short enough to prevent escalating instability or cascading issues, yet long enough to coordinate the actions needed—redispatching generation, reconfiguring topology, performing necessary switching, and enacting demand-side measures if available. Fourteen minutes would be very aggressive for most coordinated actions and might not allow sufficient verification or coordination. One hour or two hours, while easier to achieve, leaves the system under stress longer, increasing the risk of instability or outages. So aiming for relief within 30 minutes aligns with reliable, feasible operations across the network.

Relief timeframe is about how quickly operators should bring a stressed system condition back to acceptable limits. In PJM practice, 30 minutes is the standard target because it strikes a practical balance: it’s short enough to prevent escalating instability or cascading issues, yet long enough to coordinate the actions needed—redispatching generation, reconfiguring topology, performing necessary switching, and enacting demand-side measures if available.

Fourteen minutes would be very aggressive for most coordinated actions and might not allow sufficient verification or coordination. One hour or two hours, while easier to achieve, leaves the system under stress longer, increasing the risk of instability or outages. So aiming for relief within 30 minutes aligns with reliable, feasible operations across the network.

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