By Gary BordersTexas Press AssociationThe agency that operates the power grid for much of the state asked Texans to conserve energy use several times last week as the grid was beset with high demand and low wind-power generation, according to the Austin American-Statesman.The Electric Reliability Council of Texas has asked electric users to reduce energy use as the state continues to face a tenacious heat wave.Demand on the grid operated by ERCOT has record levels 10 times this summer. The system has held up to the strain to this point. Any outages across the state have been local and caused by ...