Triple-digit, record-breaking heat is smothering Texas and energy providers are asking for conservation as the state sweats in one of the hottest, driest summers ever.

Houston's mercury tied a once-before-seen 109-degree record on Saturday. In San Antonio, the thermometer rose to 110 degrees on Saturday - one degree shy of a 2000 record. And the National Weather Service expects the city to hit 111 degrees on Sunday.

In Bryan-College Station, a forecast high of 106 will easily break another record Monday.

Dallas and Austin are marching on with triple-digit heat that has persisted all month.

Meanwhile, the Electric Reliability Council of Texas, which monitors the electric grid and manages the market for 75 percent of the state, is calling for conservation as electricity usage breaks new records. The council expects to set another peak demand record on Monday or Tuesday.