The blackouts that hit Texas earlier this year caused billions of dollars in debt for some utilities when natural gas prices skyrocketed. That's led to lawsuits over alleged price gouging. Transcript SACHA PFEIFFER, HOST: The breakdown of the Texas power grid during a severe storm in February caused havoc in the state's energy markets. Now there are charges of manipulation against some big energy companies. Moses Buchele of member station KUT in Austin reports. MOSES BUCHELE, BYLINE: The days leading up to February's big freeze were nerve-racking for CPS Energy, San Antonio's city-owned utility. Demand for electricity and heating would be huge. To prepare, the utility had to make sure it had enough electricity contracted and enough natural gas to supply its customers and fuel its own power plants. But then something else started happening, says CEO Paula Gold-Williams.