Wind turbines freezing is still a big part of the problem. They lost 60% of the wind generation from the week before which is still 10% -20% of the total expected power generation. The overperforming comment is simply based on expecting a greater than 60% power loss. If Texas was entirely powered off of wind and solar, the amount without power would have been way higher. I'm not against getting more renewable energy, but I'm also very aware of the issues with current renewable solutions as well.
From the link I already provided:
The majority of outages overnight were plants fueled by natural gas, coal and nuclear, which together make up more than two-thirds of power generation during winter.
The inherent unpredictable fragility of fossil fuels is what causes the problem. The behavior of wind turbines is not only expected, but can be planned for and mitigated. If Texas had a majority wind power generation system this disaster would not be happening. Over provisioned wind power results in strong interconnections to other time zones to sell electricity to them when local demand is low and remote demand is high. Those same interconnections would be able to sell the necessary power back to Texas to allow it avoid this disaster entirely.
Nobody can plan for the unpredictable and unreliable behavior of fossil fuel, making disasters like this inevitable when relying on it.
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