Just got off the phone with Duke Energy about a nightmare scenario. Manufacturing client in Charlotte has been billed with the wrong CT multiplier for almost 2 years. Instead of 240:5 ratio (48x multiplier) they've been using 120:5 (24x multiplier). Customer has been paying literally half of what they should owe. Now Duke wants $89,000 in back billing plus interest. The meter techs admit it was their error during a 2023 transformer upgrade. How do we handle this massive correction? Client is a small operation that can't absorb this kind of hit.
Duke Energy correcting 2 years of wrong multiplier
Wayne, this is a tough one but you have options. First, North Carolina has rules limiting back-billing for utility errors. Check NCUC Rule R1-17 - I believe utility errors are limited to 12 months of back-billing, not 24. Second, demand they provide detailed documentation of when the error occurred and why it took so long to discover. If they can't prove exactly when the wrong multiplier was applied, you can challenge the entire calculation.
I had a similar case with Ohio Edison. Wrong multiplier for 18 months, utility wanted $45K back. The key is proving when they should have discovered the error. Utilities are required to test CT accuracy periodically. If they missed scheduled tests or didn't follow proper procedures, that's negligence on their part. Ohio limited the back-billing to 6 months because of utility negligence. North Carolina might have similar protections.
The transformer upgrade detail is crucial. If Duke's techs installed the wrong CTs or programmed the wrong multiplier during their work, that's 100% their error. In Florida, we've successfully argued that utility installation errors should result in zero back-billing to the customer. The customer relied on Duke's bills and budgeted accordingly. It's not fair to penalize them for Duke's mistakes.
Wayne, also check if your client's usage patterns show any anomalies that Duke should have caught. If a manufacturing plant's bills suddenly dropped 50% after the transformer work, that should have triggered investigation. TVA has automated systems that flag unusual consumption patterns. If Duke had similar systems and ignored the warnings, that's additional negligence.
This reminds me of a National Grid case in Rhode Island. Wrong multiplier for 15 months, $67K back-bill. We negotiated based on the customer's financial hardship and utility error. Final settlement was 30% of the claimed amount paid over 24 months with no interest. The key was documenting that the customer would face bankruptcy if forced to pay the full amount immediately.
Thanks everyone. I've been digging into the timeline and found some smoking guns. Duke's own records show they tested the CTs 3 months after installation but didn't catch the multiplier error. They also have usage anomaly alerts that should have flagged the 47% consumption drop. Their negligence is well documented. Filing formal complaint with NCUC next week.
Wayne, make sure to request all maintenance records for that meter installation. Sometimes you'll find multiple errors or evidence that they knew about problems but didn't act. In Arkansas, we discovered Entergy knew about a multiplier error for 6 months but kept billing incorrectly while they 'investigated.' That turned a back-billing case into a refund case.
Georgia Power had a similar transformer upgrade screw-up last year. Wrong CTs installed, took them 20 months to figure it out. We got the back-billing limited to 6 months based on their negligence and the customer's reliance on accurate bills for business planning. Document any business decisions your client made based on the lower bills - expansion plans, equipment purchases, etc.
The business impact angle is huge. If your client made capital investments or operational decisions based on Duke's incorrect bills, that creates additional damages. PG&E tried to back-bill a semiconductor fab $120K for a multiplier error, but the customer had expanded operations based on the lower energy costs. We got the back-billing reduced to zero and PG&E paid damages for the customer's wasted expansion costs.
Wayne, also consider the time value of money argument. Your client has essentially provided Duke with an interest-free loan for 2 years. If Duke is demanding interest on the back-billing, you should demand interest on the overpayment for electricity they didn't actually provide. It's only fair that the calculation works both ways.
Quick update: NCUC ruled in our favor on the 12-month limitation. Duke can only back-bill for electricity consumed after November 2023, not the full 24 months. That cuts the amount from $89K to $41K. Still negotiating payment terms and whether Duke owes interest for their 2-year error. Having solid documentation of their negligence made all the difference.
That's a great outcome Wayne. The 12-month rule saved your client $48K. Now push hard on the interest issue - if they're claiming they provided $89K worth of electricity that wasn't paid for, then they owe your client interest on the $48K that's now forgiven. The math should work both ways or not at all.
Excellent work Wayne. This case shows why detailed record-keeping and aggressive advocacy matter. Duke's negligence cost them $48K in uncollectable back-billing. Other utilities will take note that sloppy meter work has real financial consequences. Keep us posted on the final settlement terms.