Residential tariff · NM
R (Residential Service) - Rate 1
Southwestern Public Service Co · Seasonal · filed 2026
What this tariff charges
| Fixed charge | $11.20 per month |
|---|---|
| Structure | Seasonal |
| Filed | 2026-01-01 |
Energy rates
The charged price is the base rate plus its adjustment. Adjustments carry fuel and rider costs and are frequently most of the bill, so a comparison built on the base rate alone is meaningless.
Period 0
| Tier | Up to | Base | Adjustment | Charged $/kWh |
|---|---|---|---|---|
| 1 | no limit | 0.09368 | 0.00383 | 0.09752 |
Period 1
| Tier | Up to | Base | Adjustment | Charged $/kWh |
|---|---|---|---|---|
| 1 | no limit | 0.11242 | 0.00383 | 0.11626 |
What it costs at different usage levels
| kWh per month | Annual total | Effective $/kWh |
|---|---|---|
| 500 | $756.98 | $0.1262 |
| 1000 | $1,379.56 | $0.1150 |
| 2000 | $2,624.73 | $0.1094 |
Effective rate includes the fixed charge, which is why it falls as usage rises.
Rooftop solar on this tariff
A 7 kW system costing $21,000 before incentives would save between $560 and $1,245 a year on this tariff, paying back in 17–38 years . No federal tax credit is included: Section 25D ended on December 31, 2025.
no sell rate filed, but this utility reports residential net metering - the range spans no export credit to full retail netting. Compare across this state →
The utility's own description
To residential customers for electric service up to 15 kW capacity used for domestic purposes in private residences and separately metered individual apartments when all service is supplied at one point of delivery and measured through one kilowatt hour (kWh) meter, where facilities of adequate capacity and suitable voltage are adjacent to the premises to be served. The Alternate Time of Use Rider is not available to customers with customer owned generation.
URDB rate id 69b31d6ca9608156eb096f1e · utility source document · all Southwestern Public Service Co tariffs