The Electric Reliability of Council of Texas, operator of the state’s power grid, forecast earlier this month that demand will peak at 58,591 megawatts between December and February, when households are typically running their heaters to keep warm. That would top a winter record hit in 2011 when a cold snap triggered rolling blackouts across Texas.  The increase in Texas’s population is what’s forecast to drive up power demand – not cold weather. Texas’s population has risen by more than 2 million in the five years through 2014, government data show. Read more about winter demand in Texas.