I am with Red Energy and recently installed solar then one day they rang me up to change me to another plan.
In which the usage charge decrease from 0.29722 to 0.27445. But added a "Demand Charge" which is calculated by "Max half hour usage X 0.16478 X number of days"
It sounds dodgy as the new cost structure does not directly related to what I used but the guy said you can change it back anytime.
So my question is, what's the rationale for them to come up with this cost structure (apart from ripping someone off) and is there any benefit to me in this?
If they put you on a plan with a demand charge without telling you that's incredibly dodgy but usually they spend the time to explain the new plan and ask if you understand it. If they didn't, then yeah, complain.
I'd also just recalc your bill, are you better off with the lower usage and additional demand charge? Pretty easy to figure out, multiple usage by 0.02277 and see if that's higher than what you paid in terms of the demand charge.