Your SWCG will create 0.4 ppm FC per hour if set at 100%. You will need to run the pump more like 10 hours per day, at least, to generate the chlorine you need.
Why do you want to run at such high flow rates?
I see you have a suction side cleaner, so that will require higher flow rates.
You can easily not run the pump during the high electric rates. Just be sure you are creating enough chlorine each day.