Willem Westerhof described an outsized scale cyber attack targeting the crucial electrical infrastructure based on existing outline that he published in ITsec 2016. He titled as Horus scenario which focuses on Cyber attack on PhotoVoltaic-installations and recreating solar energy. He said if an attacker gained control over such a grid and if he goes more than the maximum peak value outages will occur. A three-hour breakdown across Europe, somewhere middle day on Gregorian calendar month is calculable to cause +/- four.5 billion euros of damage.”]
Source: https://gbhackers.com/cyber-attack-targeting-electrical-infrastructure/