Anyone else seeing issues with PSE&G applying wrong CT ratios to demand calculations? I have an account where the CT ratio changed from 400:5 to 600:5 but it looks like they're still using the old multiplier on the demand charges while using the new one for kWh. Bill went from $8,200 to $12,100 overnight.
PSE&G Demand Charges - CT Ratio Issues
Todd, that's a classic billing error. When they change CT ratios, sometimes the demand multiplier gets updated in a different part of their system than the energy multiplier. Did you check if the actual meter readings look consistent?
Frank, the meter readings seem right - around 920 kW peak demand. With the 600:5 CT ratio that should be 920 x 120 = 110,400 kW billed demand, but they're billing 165,600 kW which would be the 600:5 reading times the old 400:5 multiplier of 80 then times 120. If that makes sense.
Wait Todd, I think your math is off. If the CT ratio is 600:5, then the multiplier should be 120, not 80. Are you sure about those numbers?
Dan you're right, I was confusing myself. Let me recalculate: 920 kW reading x 120 multiplier = 110,400 kW, but they billed 165,600 kW. So they're using 180 as the multiplier somehow (165,600 / 920 = 180). Not sure where that's coming from.
Definitely call PSE&G and ask them to show their work. That 180 multiplier doesn't make sense for either CT ratio. Could be a programming error in their billing system.