State officials including Republican governor Greg Abbott initially blamed the outages on frozen wind turbines and solar panels. Data showed that failure to winterize power sources, like wind turbines and natural gas infrastructure, had caused the grid failure. Texas's power grid has long been separate from the two major national grids to avoid federal oversight, though it is still connected to the other national grids and Mexico's; the limited number of ties made it difficult for the state to import electricity from other states during the crisis.Multiple sources:
