Where transmission sits in the power path
Power flows from generation through transmission grids operated or overseen at regional levels, then through distribution lines to your laundromat meter. Transmission charges compensate owners of high-voltage infrastructure. Distribution charges compensate local poles, transformers, and service lines—covered separately because the job this page does is isolate transmission only.
Oncor's delivery materials illustrate unbundled delivery in Texas where energy supply is chosen separately; transmission and distribution components still appear as regulated delivery cost recovery.
| Stage | Infrastructure | Typically on bill as |
|---|---|---|
| Generation/supply | Power plants, wholesale purchases | Supply or energy charge |
| Transmission | High-voltage lines, bulk substations | Transmission rider / TCRR |
| Distribution | Local feeders to meter | Distribution rider / TDU charge |
| Metering | Meter read and service | Customer or metering charge |
Why laundromats still pay transmission when dryers use gas
Gas dryers reduce supply kWh—California IOU testing averaged 0.35 kWh per load versus 0.36 therm gas—but washers, water heating, lighting, and HVAC still draw distribution and transmission-backed power across CLA's reported mean 16.6 daily operating hours. DOE attributes about 50% of commercial laundry primary energy to water heating; electric or hybrid water heat keeps kWh flowing through the same grid path.
Transmission charges scale with tariff formulas on kWh, kW, or fixed class allocations—not with whether tumblers burn gas.
Supply versus delivery again
EIA explains retail choice lets many customers choose supply while the utility delivers. Transmission is firmly in the delivery/regulated bucket in unbundled markets. Switching REP in Texas PUC territory changes competitive supply lines; TDU transmission and distribution recovery continue.
Procurement lowers commodity price; efficiency lowers kWh traversing the same wires—both affect total but through different line items.
Bill review checklist for transmission lines
When investigating increases, isolate transmission riders before blaming usage.
- Locate labels: transmission, TCRR, NITS, or regional grid acronyms.
- Compare transmission subtotal ÷ kWh to prior months for rate change detection.
- Read rider notices mailed separately from supplier marketing.
- Separate transmission from distribution on the same bill page.
- Archive tariff sheets when filing disputes or sale due diligence packets.
