Residential tariff · NM

Residential Heating Service TOU - Rate 39

Southwestern Public Service Co · Time-of-use · filed 2026

$0.1283per kWh, all in
$1,539a year at 1,000 kWh/mo
$11.20fixed, before any usage
$0.1359utility's actual average

What this tariff charges

Fixed charge$11.20 per month
StructureTime-of-use
Filed2026-01-01

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

TierUp toBase AdjustmentCharged $/kWh
1 no limit 0.07906 0.00383 0.08289

Period 1

TierUp toBase AdjustmentCharged $/kWh
1 no limit 0.28162 0.00383 0.28545

What it costs at different usage levels

kWh per monthAnnual total Effective $/kWh
500 $836.81 $0.1395
1000 $1,539.21 $0.1283
2000 $2,944.02 $0.1227

Effective rate includes the fixed charge, which is why it falls as usage rises. This is a time-of-use tariff, so the result also depends on when power is used; an average residential pattern is assumed. Details →

Southwestern Public Service Co offers a cheaper tariff at this usage. Residential Heating Service - Rate 39 comes to $1,197.72 a year against this one's $1,539.21 — a difference of $341. Eligibility rules may apply; check with the utility.

Rooftop solar on this tariff

A 7 kW system costing $21,000 before incentives would save between $830 and $1,405 a year on this tariff, paying back in 15–25 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 with predominately electric space heating 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. Electric space heating includes permanently installed space heating equipment in regular use, including heat pumps and electric resistance heating, excluding bathroom heaters. The Alternate Time of Use Rider is not available to customers with customer owned generation.

URDB rate id 69b32179aa74f99fce05780e · utility source document · all Southwestern Public Service Co tariffs