Thread by @bradj_TX

"Our job is to provide explanations, not excuses. And to find ways to prevent this from happening in the future." -- @ERCOT_ISO president Bill Magness

The slides on the @ERCOT_ISO presentation detailing what the organization does and does not do.

Here's a good breakdown of the different stages of Texas' electricity delivery.

.@ERCOT_ISO president Bill Magness says nearly half of the state's generation, in total, was forced out at the highest point due to the extreme weather. #TexasFreeze

Here's @ERCOT_ISO's timeline of the Sunday night/Monday morning events that led to the #TexasBlackout.

A further timeline showing the supply shortage of Monday morning February 15. The red highlighted area is the "danger zone" during which @ERCOT_ISO says the blackout might have become even worse had that condition lasted for 9 minutes. #TexasFreeze

"If we have a blackout in the entire system, it may be out for an indeterminate amount of time." -- @ERCOT_ISO president Bill Magness

Further says that had the whole grid been overwhelmed, the wholesale blackout could have "taken weeks."

This graph shows the total generation unavailable by day due to extreme weather outages and problems. As you can see, it spiked early Monday morning and remained at high levels for much of the days. #TexasFreeze

Of that generation lost, here's the breakdown by fuel source. #TexasFreeze

This graph is incredibly explanatory in terms of the weather conditions and how they differed from those faced in 2011. Not only did temperatures fall further, but they remained lower for longer. That's a big reason why the system was stretched to its limits so much. #TexasFreeze

More good illustration between the 2011 blackout conditions and last week's.

Based on this chart from @ERCOT_ISO, Houston's CenterPoint and DFW's Oncor customers accounted for the two largest percentages of the load shed during the crisis (i.e. the blackouts issued). #TexasFreeze

Bill Magness adds that this percentage is planned ahead of time based on respective capacities. It was not a spur of the moment decision.

This chart details the financial aspect of last week -- average pricing during the event was over $6,500, drastically higher than both last month and Feb. 2020.

Magness defends the pricing, saying it incentivized generators to ramp up production as much as possible. #TexasFreeze

“ERCOT was flying a 747 with not one but both of its engines out and guided it [for days] before safely landing it in the Hudson. The people in the ERCOT control room are heroes.” — @ERCOT_ISO Vice-Chair Peter Cramton

The plane crashing in Cramton’s analogy is the “black start” event they narrowly avoided — by about 4 minutes and 30 seconds according to @ERCOT_ISO.