Rate Schedule R-1 Fixed Energy Charge Plan (large tier)
0.18121$/kWh
all usage, all hours · plus $0.4580 per day (about $13.94 a month) · $2.49 per month · covers the full bill — everything the utility bills for energy - directly comparable to another bundled rate
effective2026-06-01
transcribed2026-08-22
today2026-10-08
Monthly bill
Usage
$ per month
500 kWh
$107.03
1,000 kWh
$197.64
2,000 kWh
$378.85
Computed from the rates on this page at 30.4 days a month. The same arithmetic is checked against the utility's own published typical bill on every build.
Before taxes, franchise fees and any local surcharge.
Provenance
reconciled to a published total
sourceRate Schedule R-1 Residential Service Fixed Energy Charge Plan, A.C.C. No. 6154, Decision No. 79293
docketDecision No. 79293 (base rates and several adjustors); LFCR Decision No. 81562; DSMAC Decision No. 81584
verifiedTranscribed from the utility's filed sheetRate Schedule R-1 Residential Service Fixed Energy Charge Plan, A.C.C. No. 6154, Decision No. 79293
verifiedEffective date on the sheet: 2026-06-01
verifiedReconciles to a total the utility published itselfthe unbundled components APS prints beside every bundled charge - all six sum exactly to the bundled figure
verifiedSource document checked daily for changes
excludedTaxes, franchise fees and local surchargesJurisdiction-specific, so they are deliberately not encoded. A bill will be higher than this figure by that amount.
Energy rates
Period
Applies to
$/kWh
all hours, all year
all usage
$0.18121
Other plans at this utility
Encoded from the same tariff book, on the same day. Which one
you are on is on your bill; which one you are eligible for is set by the
utility, not by this page.
Transcription notes recorded when this tariff was encoded, including anything deliberately left out.
NINE ADJUSTMENT SCHEDULES APPLY, and the obvious five are not all of them. R-1's own ADJUSTMENTS list names REAC-1, PSA-1, TCA-1, DSMAC-1, LFCR, CRS-1, SRB-1, RCDAC-1 and TEAM. A first pass found five by guessing at filenames; CRS-1 (0.001480/kWh) and SRB-1 (0.000000) would both have been missed. The zeros are carried deliberately so that a future non-zero value appears as a change rather than as an absence.
RCDAC-1 is not encoded: it applies only to Direct Access customers returning to Standard Offer service, which is not ordinary residential service. Arizona taxes and governmental fees are also excluded, being jurisdiction-specific.
THE THREE R-1 VARIANTS ARE NOT USAGE TIERS. A customer is assigned to small, medium or large by their ANNUAL AVERAGE monthly consumption, which APS reviews each January - not by where usage falls within a month. Encoding them as an energy tier structure would misprice every bill.
THE RENEWABLE ADJUSTMENT IS CAPPED and this schema cannot express that. REAC-1 is $0.006214/kWh subject to a residential cap of $2.49 per account per month, so the cap binds above about 401 kWh. It is encoded as a flat $2.49 monthly charge.
The System Benefits Charge of $0.00361/kWh is printed as an unbundled COMPONENT of the bundled energy charge, and the sheet says 'These are not additional charges'. It is already inside the energy rate and must not be added.
TWO EFFECTIVE DATES. Base rates are from Decision No. 79293, effective 2024-03-08, and only change in a rate case. The adjustors move on their own cycles - TCA took effect 2026-06-01, REAC 2026-03-01, PSA 2026-02-01, DSMAC 2026-01-01, LFCR 2025-12-01 - so the tariff is dated by the latest of them.
THE BASE CHARGES RECONCILE EXACTLY. APS prints the unbundled components of every bundled charge, and all six - three tiers x daily and per-kWh - sum to the printed figure. A mistyped base rate fails the build.
THE ALL-IN RATE DOES NOT. APS publishes no total including its adjustors and no typical bill at a stated usage was found, so the eleven adjustment components on top are each read from their own filed schedule but are not checked against any published sum.
IT IS NOT ESTABLISHED THAT R-1 IS THE DEFAULT PLAN. The sheet never uses the word, and APS publishes at least seven residential plans. This is one plan among several rather than the one most customers are on.
THE LARGE TIER, for customers whose annual average monthly usage of 1,000 kWh or more.
$0.458 per DAY basic service charge - filed per day, not per month, so a 31-day month costs more than a 28-day one.
$0.15418 base energy plus 0.027029 of adjustors = $0.181209/kWh, and $2.49/month for the capped renewable adjustment.
Flat within the month: no time-of-use, no seasons, no demand charge. APS's other residential plans are time-of-use.
THE REAC ENCODING IS EXACT FOR THIS TIER, because it starts above 401 kWh so the cap always binds.
Think a figure here is wrong?
Email support@rategrid.dev
with this plan's name and what the filed sheet says. Every rate on this page was
transcribed from the document linked above, so a report that quotes the sheet can
be checked against it and corrected.
Change history
The source document is fetched daily and every version is kept.
Utilities do not publish superseded rates, so this record does not exist
elsewhere once a rate changes.
No changes detected since monitoring began. The source sheet is checked daily.