Who would have ever thought people would see rolling blackouts in Texas, the energy capital of the US? And there appears to be a few interesting facets of the problem:
1. 12 gigawatts of wind power was taken offline because the wind turbines were freezing. For those of you unfamiliar with the scale of 12 gigawatts, a typical nuclear power plant is about two gigawatts. The Grand Coulee Dam, the largest hydropower facility in the US, is just under 7 gigawatts. Wind power has eaten Texas.
2. Gas turbines are used to meet peak demand, and, amazingly, in a huge natural gas producing state, there is apparently a shortage of natural gas due to gas well equipment freezing in sub-zero temperatures. The shortage has caused gas turbine generation to be taken offline. I haven't found an estimate on the GW capacity that's offline, but it sounds big. Small-time natural gas producers are loving it though, and there are several references about crews going out and doing whatever is necessary to restart previously uneconomical small wells. This says natural gas prices have surged 4000% in two days:
Prices have surged more than 4,000% in two days in Oklahoma, while gas processing plants across Texas are shutting as liquids freeze inside pipes, disrupting output just as demand for the heating fuel jumps.
www.worldoil.com
3. Given that most winter days are relatively mild, apparently Texans like to use electric space heaters and natural gas fireplaces to heat up selected rooms that get cold, due to many homes being not so well insulated as northern homes. (It's like this in California too, in my experience.) These inefficient heat sources are further stressing the electric and gas providers, and making matters worse, and peaking demand in the winter when it's usually in the hot summers. But people really have no practical short-term choice.
So the situation plays out as rolling blackouts:
The state's power grid manager said no additional outages were reported overnight, though some generating units went offline.
abc13.com
And to top it all off, Texas has a mostly isolated electrical grid:
Find out about ERCOT, including its governance model, and find news, jobs, RFPs and contact information.
www.ercot.com
So surrounding warmer states can't send current to Texas to help cover the shortfall.
What a mess. Any Texans here suffering from rolling blackouts?