Energy-efficient blackout thermal curtains panels are advantageous for homes with central heating or cooling because they stop air from entering or leaving the room. The use of less energy to heat the house during the winter thanks to these curtains results in lower utility costs. The curtains reduce cooling expenses in the summer by preventing cool air from escaping. So in theory your cooling and heating system doesn't have to work too hard to change the temperature of the home where it is placed as it already has a lot of insulation in place to aid it in its cooling or heating process. So yes a thermal curtain is highly useful and good for power-saving needs. So if you stay in such areas, go for a thermal curtain lining to aid your temperature fluctuations and insulation needs. For more details, please visit https://www.thermalwindowcurtains.com/ or call 540-214-0678