January 2, 2019 Read More →

Renewables, geography make it feasible for Texas to quit coal, Rice study finds

Houston Chronicle:

Texas might have the perfect environment to quit coal for good.

Texas is one of the only places—potentially in the world—where the natural patterns of wind and sun could produce power around the clock, according to new research from Rice University.

Scientists found that between wind energy from West Texas and the Gulf Coast, and solar energy across the state, Texas could meet a significant portion of its electricity demand from renewable power without extensive battery storage. The reason: These sources generate power at different times of day, meaning that coordinating them could replace production from coal-fired plants.

“There is nowhere else in the world better positioned to operate without coal than Texas is,” said Dan Cohan an associate professor of civil and environmental engineering at Rice University who co-authored the report with a student, Joanna Slusarewicz. “Wind and solar are easily capable of picking up the slack.”

Texas is the largest producer of wind energy in the United States, generating about 18 percent of its electricity from wind. Most of the state’s wind turbines are located in West Texas, where the wind blows the strongest at night and in the early spring, when demand is low. The resource, however, can be complemented by turbines on the Gulf Coast, where wind produces the most electricity on late afternoons in the summer, when power demand is the highest. Solar energy, a small, but rapidly growing segment of the state’s energy mix, also has the advantage of generating power when it is needed most — hot, sunny summer afternoons.

Coal still generates about 25 percent of the state’s power, but its share is shrinking. Since 2007, coal used in generating electricity has decreased 36 percent. Last year, Vistra Energy of Dallas shut down three coal-fired plants in Texas, citing changing economics in the power industry that make it difficult for coal to compete.

More: Texas has enough sun and wind to quit coal, Rice researchers say

Comments are closed.