Nationwide heat wave puts electric grid to the test

Any idea how I would find out if my local power company (in my case, Xcel Energy in Minneapolis), cycled any of the homeowner-level ‘supersaver’ or ‘dual fuel’ switches that can cut power to your central air of GSHP? I’m referring to the switches that the power utility can operate remotely to kill your cooling (or heating) power for short periods of time during peak demand. Anyone?