No, daylight saving time does not significantly save electricity in the US

Studies have found daylight saving time has led to little, if any, reduction in electricity use.

source https://www.wfaa.com/article/news/verify/money-verify/no-daylight-saving-time-does-not-significantly-save-electricity-in-the-us/536-84ba50d0-1018-4c04-8310-80b9739820be