Karl J. from Santa Ana here. Got a client with manufacturing facility in PG&E territory who crossed the 500 kW threshold for E-19. PG&E automatically moved them from Schedule A-10 but the timing seems wrong. The crossing happened in July but they applied E-19 rates starting in May. Anyone familiar with PG&E threshold crossing rules? The tariff language is confusing about effective dates.
PG&E Demand Threshold Crossing - Schedule A-10 vs E-19 Confusion
Laura H. from Providence - different territory but similar issue with National Grid. Most utilities I've seen apply new rate schedules the month after threshold crossing, not retroactively. If PG&E applied E-19 rates before your client actually crossed 500 kW, that sounds like an error. Do you have the monthly demand readings for the disputed period?
Laura, yes I have all the demand readings. May was 445 kW, June was 478 kW, July hit 523 kW for first time. PG&E says they applied E-19 starting May because customer "approached" the threshold. That doesn't match any tariff language I can find. The difference in rates is significant - about $3,200 per month.