The sales tax discount on school clothes that Texarkana, Texas, shoppers take advantage of each summer now extends to improving energy efficiency in the home.

The environmentally conscious will enjoy a tax-free shopping weekend this Memorial Day, a cut that could save homeowners hundreds on their purchases and future utility bills.

“This is the first chance Texans have to purchase an energy-efficient appliance without paying sales tax,” said Phil Watkins, energy efficiency manager for Southwestern Electric Power Co. “The consumer will also benefit from the reduced energ...