maybe the ‘grand plan revealed’ might be of interest.

the 8 story building has a ‘demand charge’ that is fully half of the electric bill.

with chillers, chilled water pumps, HVAC units. space heaters, computers, a billboard (20 amps at rest, 50amp at peak), lights, elevator, and water heaters on every floor, the grand plan is to try to reduce the load at peak times to bring down the Demand charge.

‘DEMAND’ is the highest power use over a rolling 15 minutes at any point of the month.

80,000 kWh, but 240kWh Demand.

another way, 80,000/30 days/24hrs/15 minutes is about 28.

so, the highest 15minutes use is 10 times the average.

My goal is to try to bring that peak down.

eventually, I hope to be able to limit what can turn on at times during the day.

I am at the very first steps figuring out where the problems are.

I want to log the operation of each of the 15 circuit breaker panels,

then the individual loads on the panels

then automate the ones I can.

the pump is just the first target. I have been running the logger with 10 second increments and I know it is not very good.

the continuous monitoring is infinitely better.