> Secondly, it was not Only Texas. I live in Kansas and travel to Missouri weekly and we certainly had outages.
ERCOT was down easily 30-35GW (40-50%) of generation and cut power for days across large swaths of the state. SPP had outages, but not nearly as extensive in terms of MW shortfall, number of customers impacted, or duration of the impact.
> My home state, produces nearly 2/3 of its energy from green sources: wind and nuclear and the excess is sold to the SPP and can be consumed in Texas.
The only part of Texas it can really be consumed in are the parts of Texas served by SPP in the extreme NOrth (that are interconnected with the rest of the Eastern Interconnection). There are a couple small (> The reason is all of these areas are covered by the "Southwest Power Pool" which is a generation pool which agree to sell energy to each other and help out during extreme events (an oversipmlication, but good enough for a HN comment). Texas operators trade energy in multiple markets so nearby locations were affected.
SPP and ERCOT both have 'generation pools' and markets that enable them to serve load across their service areas. What SPP has that ERCOT does not are extensive connections to neighboring pools (MISO, PJM, etc.) and more adequately winterized generation and fuel supply infrastructure. The CEO of SPP gave an interview on an energy podcast last spring where she directly credits the ability bring in power from PJM and MISO as helping SPP serve its load. That sort of option wasn't even available to ERCOT.
Notably, the other option unavailable to ERCOT is exporting/selling wind power to neighboring ISO's.... The Texas focus on avoiding federal energy regulation is costing them the ability to sell one of their strong suits into a broader market.