Been auditing for FirstEnergy here in Cleveland for about 6 months now. Still struggling with some of the demand billing concepts when training new hires. Had a junior auditor ask me yesterday why a customer's demand charge was $847 when their peak was only 67 kW and the rate schedule shows $12.50 per kW. Obviously it's the ratchet provision but I realized I couldn't explain it clearly. Anyone have a good way to teach demand ratchets to people who are new to utility billing? Feel like I'm failing these kids.
New guy asking dumb questions about demand billing
Frank - don't beat yourself up. Demand ratchets are probably the #2 thing that trips up new auditors after time-of-use periods. I always start with a simple analogy. Tell them to think of it like a gym membership - even if you only go once this month, you still pay the full monthly fee based on your commitment level. The ratchet is the utility's way of ensuring cost recovery for infrastructure that has to be sized for your peak usage, even during low months. In your example, that customer probably hit a much higher peak in a previous month within the ratchet period.
Phil's gym analogy is solid. I use something similar with Duquesne Light customers here in Pittsburgh. What I add is this: pull up 12-24 months of billing history and show them the demand progression month by month. Circle the peak month, then show how the ratchet percentage (usually 80-90%) applies to that peak for the following months. Visual learners really get it when they see $67 kW this month but $89 kW ratchet demand from July when they hit their annual peak. Makes the math click.
Good thread Frank. Down here with Tennessee Valley Authority we see a lot of seasonal ratchets that really confuse the newbies. Summer peak affects your bills through October, then winter peak kicks in November through April. I created a simple spreadsheet template that shows ratchet calculations month by month. Happy to share if anyone wants it. The key is repetition - have them calculate ratchets on 5-10 different accounts until it becomes second nature. No shortcuts on the fundamentals.
Terry that spreadsheet sounds useful. Here at MLGW we get a lot of questions about why the ratchet doesn't apply during certain months. I always explain the rate schedule language first - most have ratchet suspension periods during spring/fall when system load is naturally lower. Teaching them to read the tariff carefully before jumping into calculations saves a lot of embarrassment later. Nothing worse than confidently explaining a $2,400 error that doesn't actually exist because you missed a tariff footnote.
Thanks everyone, this is exactly what I needed. Phil, I'm definitely stealing that gym membership explanation. Terry, would love that spreadsheet if you don't mind sharing. Amir raises a great point about tariff reading - maybe that's step one before we even get to calculations. Seems like I need to slow down and build the foundation better instead of jumping straight to the math.
Frank - one more tip from Dominion Virginia Power territory. I always have new auditors circle the demand billing components on actual customer bills before we talk theory. When they can physically point to "Demand Charge: $847.50" and "Billing Demand: 67.8 kW" it makes the disconnect obvious. Then we work backwards to figure out why. Hands-on learning beats lecture every time. Your junior auditors are lucky to have someone who cares this much about teaching them right.
Oh, and Frank - don't call them dumb questions. I've been doing this 8 years and still learn something new every month. The utility industry is complex enough without making people feel stupid for asking. Questions mean they're thinking, which is exactly what you want in an auditor.