I'm pulling my hair out trying to understand SWEPCO's voltage classification system here in Louisiana. They have Primary, Secondary, and something called "Intermediate" service levels. Client is being quoted different rates for 4.16kV vs 13.2kV primary service, even though both require customer-owned transformers. The rate difference is only 0.4 cents/kWh between the two primary levels. Has anyone successfully navigated SWEPCO's tariff structure? Their customer service reps seem confused about their own rates.
SWEPCO Voltage Classifications - Anyone Understand This Tariff?
Brenda, I haven't dealt with SWEPCO specifically, but that "Intermediate" classification sounds like what some utilities call "sub-transmission" service. Usually it's for customers who take service between 4kV and 15kV but don't quite meet the requirements for true primary service. The small rate difference between 4.16kV and 13.2kV suggests they might classify both as the same service level despite the voltage difference.
Gary might be onto something. Westar has a similar structure where they lump all primary voltages from 4kV to 25kV into one rate class. The theory is that the utility's delivery cost is roughly the same regardless of the specific primary voltage. Brenda, what's the actual kWh rate difference between their "Primary" and "Intermediate" classifications? That might tell us if it's worth pushing for a specific voltage level.
Rachel, the Primary rate (13.2kV+) is $0.0847/kWh while Intermediate (4.16kV-12.47kV) is $0.0891/kWh. Only 0.44 cent difference, but for this client's 8,000 MWh annual usage, that's $3,520 savings for going to true primary voltage. The confusing part is SWEPCO says customer transformer requirements are identical for both levels. So we're paying the same equipment costs but getting penalized 0.44 cents for taking 12.47kV instead of 13.2kV service.
That's odd pricing structure, Brenda. Here in Pennsylvania, both PECO and PPL treat anything 4kV and above as primary service with identical rates. The $3,520 annual difference might not justify engineering costs to upgrade from 12.47kV to 13.2kV service, especially if the client's equipment is already designed for 12.47kV. Have you asked SWEPCO what the technical justification is for the rate difference? Sometimes these classifications are legacy artifacts that don't make economic sense anymore.
Sylvia's right about legacy classifications. Rocky Mountain Power had similar illogical rate tiers until they simplified in 2019. Brenda, you might have success arguing that identical customer equipment requirements should mean identical rates. File a formal complaint with Louisiana PSC if SWEPCO can't provide technical justification. We've won similar arguments here in Utah when utilities had discriminatory rate structures without cost basis.
Connie makes a good point about regulatory complaints. Entergy Arkansas had a similar classification mess until the PSC forced them to rationalize their voltage-based rate structure in 2020. The key is demonstrating that customers face identical costs and service characteristics but receive different rates. If SWEPCO can't show material difference in their delivery costs between 12.47kV and 13.2kV, the rate differential is probably discriminatory.
Helen, that's great insight about Entergy's situation. I'm going to request cost studies from SWEPCO showing their delivery cost differences between voltage levels. If they can't provide justification, we'll definitely consider a PSC complaint. This client would save over $10K annually if they got the higher voltage rate, which more than justifies the regulatory effort. Thanks everyone for the advice - this forum is invaluable for navigating utility nonsense.
Brenda, keep us posted on how this plays out. Duke Energy Ohio has some similarly arbitrary voltage classifications that we've been meaning to challenge. If you're successful with SWEPCO, it might provide precedent for other utilities with illogical rate structures. The regulatory approach sounds like the right strategy - utilities hate when they can't justify rate differentials with actual cost data.
This is exactly the kind of utility rate discrimination we see across the country. Brenda, I'd be happy to connect you with our regulatory consultant who's handled similar cases in Louisiana. SWEPCO's rate structure sounds like it hasn't been updated since the 1980s. The PSC complaint route is definitely worth pursuing, especially with $10K+ in annual savings at stake. Feel free to email me directly - rdawson at aauba dot org.
Randy, I'll definitely take you up on that offer. The regulatory consultant connection would be extremely helpful. We filed our information request with SWEPCO last week and they have 30 days to respond with cost justification data. If their response is inadequate, we're moving forward with the PSC complaint. This could set important precedent for rational voltage-based rate structures across Louisiana utilities. Will keep the forum updated on progress.