Found an error in transformer ownership credits at an auto assembly plant on Consumers Energy's Primary rate. They own three 2000 kVA transformers but are only getting credit for two at $1.85/kVA/month. Been going on for 22 months. Utility claims they only have two transformers on their records. Anyone know how to prove transformer ownership to utilities?
Transformer Ownership Credit Calculation Error
Rachel, you'll need the original transformer purchase invoices and installation permits. Most utilities also require a one-line diagram showing transformer locations and ownership. The plant's electrical contractor should have submitted transformer test reports when they were commissioned - those usually show ownership too.
Joanne's advice is spot-on. Also check the original service agreement - it might specify transformer ownership requirements. At $3,700/month credit ($1.85 x 2000 kVA), 22 months is $81,400 in lost credits. Worth fighting for!