Not accurate. From the actual report you're citing: "The total U.S. population at risk of extended power outage from a Carrington-level storm is between 20-40

Not accurate. From the actual report you're citing: "The total U.S. population at risk of extended power outage from a Carrington-level storm is between 20-40 million, with durations of 16 days to 1-2 years. The duration of outages will depend largely on the availability of spare replacement transformers. If new transformers need to be ordered, the lead-time is likely to be a minimum of five months. The total economic cost for such a scenario is estimated at $0.6-2.6 trillion USD." And if you look at the appendix: "The economic costs of the outage scenarios are estimated by calculating the percentage of residential, commercial, and industrial customers without power by state and using the average amount of electricity consumed by each segment in each state per hour. The total amount of electricity "lost" for each sector in each state is then the product of these items." In other words, 0.6 - 2.6 trillion isn't the economic cost of the power outage, it's the amount of money the electric utilities would lose on sales during at extended downtime.