Power returns but mystery remains

Spain and Portugal are returning to normality after one of Europe’s
biggest ever power outages crippled the countries for hours,
leaving engineers baffled as to what had caused it

ELECTRICITY DEMAND IN SPAIN – Megawatts (MW)

10pm 4am 10am 4pm 10pm 4am 10am

30,000
35,000
25,000
20,000
15,000
10,000
0

Takes 20 hours to fully restore

Forecast
demand

Actual
usage

1:45pm:
24,821 MW

1:45pm:
10,624 MW

12:35pm: About 15
gigawatts of power
vanishes from power
grid in few seconds

Mon, Apr 28 Tue, Apr 29

Sources: Reuters, Bloomberg, Red Eléctrica Local time (GMT+2)
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