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Neso Warns of 1.8-GW Power Shortfall During Eclipse

8/14/2026

25 3 Full Breakdown

Summary

Story summary

National Energy System Operator (Neso) warned of a 1.8-GW shortfall at 5 pm on Aug 12 as the eclipse cut solar output.
European Network of Transmission System Operators for Electricity (ENTSO-E) said solar could drop up to 9.7 GW at 7:15 pm on Aug 12.
Britain imported 3.54 GW from France at 10 am, over twice its wind output.
Octopus Energy asked customers to cut use during the eclipse and offered one hour on Sunday.

History

Historical Context

The August 14-16 2003 Northeast blackout, caused by a FirstEnergy alarm-system software bug that let overloaded Ohio lines fail, left about 55 million people in the U.S. Northeast and Ontario without power. As the second-largest outage after the 1999 Southern Brazil blackout, it prompted federal reliability reforms and now drives operators like the Federal Energy Regulatory Commission and PJM to boost inter-regional capacity and demand-response.

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Story summary

National Energy System Operator (Neso) warned of a 1.8-GW shortfall at 5 pm on Aug 12 as the eclipse cut solar output.
European Network of Transmission System Operators for Electricity (ENTSO-E) said solar could drop up to 9.7 GW at 7:15 pm on Aug 12.
Britain imported 3.54 GW from France at 10 am, over twice its wind output.
Octopus Energy asked customers to cut use during the eclipse and offered one hour on Sunday.

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