We knew about this since before 2000 probably, earliest articles I could find : 2007, 2009 : https://www.cfr.org/backgrounder/americas-vulnerable-energy-grid ht

We knew about this since before 2000 probably, earliest articles I could find : 2007, 2009 : https://www.cfr.org/backgrounder/americas-vulnerable-energy-grid https://www.cfr.org/backgrounder/americas-vulnerable-energy-... , https://www.wsj.com/articles/SB123914805204099085 https://www.wsj.com/articles/SB123914805204099085