ITC Recounts Derecho Response at NERC Conference November 13, 2020 By Rich Heidorn Jr. By Rich Heidorn Jr.The August 2020 derecho caused $7.5 billion in damage and led ITC Holdings to seek mutual aid for the first time in its history. | National Weather Service Tell us who you are,get 2 free articles each month. What do you want to know? Want a free trial instead? Click here.Already convinced? View pricing and plans.Already a subscriber? Log in here. Leave a Reply Cancel replyYou must be logged in to post a comment.