Nest foiling my attempts to NOT run AC during peak times

[ssorensonaz]

I live in Phoenix, and use APS for power.  Finally able to get enough information to truly understand how the rate plan worked, discovered that if I simply DON'T run the AC during peak (4-7) I will literally save hundreds of dollars each month in the summer.  I scheduled the NESTs to supercool until 3:45, then start back up at 7:15.  Was working great.  Today I found both my ACs running at 6 pm...saying they were pre-cooling.  The system isn't respecting the schedule, and think it has to run at 6 to get to temp at 7:15. 

Anybody know how to defeat this behavior?  If they run for just a half hour during peak my bill goes up by over $200 for the month...Agh!

[GBD]

In the home app go to settings -temperature preferences and turn off "early on" 

[ssorensonaz]

Thank you - that setting is already set to off. If I was a conspiracy theorist, I might think the power company is reaching out to my thermostats to defeat my rate plan optimization.  Hmm.

[Patrick_Caezza]

@ssorensonaz 

Nope, the Learning Thermostat is just doing what it is designed to do. It learned that it needs to turn the AC on at 6 to get the home cooled to the set temperature by 7:15. 

It can take the average AC one hour to cool a room by just one degree Fahrenheit.