Got a weird one here - auto parts manufacturer in St. Louis on Ameren's LGS-TOD rate with interruptible service. They were curtailed twice last month during peak demand periods but the interruptible credit isn't showing up on their bill. Rate shows $2.85/kW credit should apply. Anyone seen Ameren mess this up before?
Ameren Missouri - Interruptible credit not applied during curtailment event
Mike - check if they actually responded to the curtailment signals. Ameren only gives the credit if you reduce load within the specified timeframe. Also make sure they're enrolled in the right interruptible program - there's two different ones now.
Dean, they definitely curtailed - I have the demand profiles showing they dropped from 2,800kW to 900kW within 15 minutes both times. The billing issue might be that Ameren didn't record their response properly. Worth pursuing?
Absolutely worth it. At $2.85/kW on their curtailed demand, you're looking at potential savings of $5,415 per event. Get the interval data from both the customer and Ameren to prove compliance.