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One Building Multiple T-Stats - Manage Peak Electricity Usage

We have a church building that has 8 heat pumps each with their own 24KW Aux electric heater strips. Since it is a church, the power company considers it a business and penalizes for 10 months after a peak power event. I would like the t-stats to coordinate to not run more than 2 units at one time and take turns around the building to get to their setpoints. If they each look to see how many are running at one time, they can set themselves to wait till their turn. They could also have a max on-time that allows another unit to start.
Part of this coordinated starting would prevent multiple units from starting at the same time after a power outage or simultaneous Home schedule.
If somebody has already addressed this with the API, please let me know.
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