Transcription notes recorded when this tariff was encoded, including anything deliberately left out.
THE SERVICE CHARGE TIERS ARE NOT USAGE TIERS. Tier 1 $20, Tier 2 $30 and Tier 3 $40 are chosen by dwelling type and service amperage - Tier 1 is an apartment or condominium up to 225 amps, Tier 2 any other dwelling up to 225 amps, Tier 3 anything over 225 amps. Encoded at Tier 2, the ordinary single-family case. A flat or condominium pays $10 a month less and a large-service home $10 more, on identical energy prices.
The minimum bill is the Monthly Service Charge.
SRP HAS NO REGULATOR. It is an Arizona agricultural improvement and power district and its elected board sets prices, so there is no docket, advice letter or filed tariff - the published price plan is the authority. Every other utility in this catalogue has a commission behind it.
Seasons are BILLING CYCLES, not calendar months: summer is the May, June, September and October cycles; summer peak is July and August; winter is November through April.
The fuel adjustment and the transmission cost adjustment are line items INSIDE the printed total, not additions to it. SRP may change either at any time, which is what moves these prices between ratebooks.
A SUPERSEDED COPY OF E-23 STILL FETCHES from a shorter URL and is wrong by up to 12% per kWh. See provenance. The FY26 ratebook is the one encoded and watched.
NOT ENCODED: the Economy Discount Rider (limited income), the Medical Life Support Equipment Discount, the Energy Attribute Certificate Rider, the Renewable Net Metering Rider and the Carbon Reduction Rider. All are elective or eligibility-restricted; none is a mandatory adder.
A VOLUNTARY ALTERNATIVE to E-23, with a very narrow peak: three hours, 3 p.m. to 6 p.m., Monday to Friday, all year.
THE PEAK IS BRUTAL AND THE OFF-PEAK IS CHEAP. In July and August on-peak is $0.3661/kWh against E-23's flat $0.1398 - 2.6 times - while off-peak is $0.1069, below E-23. This plan rewards moving load out of three afternoon hours and punishes failing to.
THE DEFAULT PLAN IS THE MORE EXPENSIVE ONE FOR A FLAT LOAD. At 12,000 kWh a year spread evenly, E-21 bills $1,707 against E-23's $1,781 - the time-of-use plan is $74 a year CHEAPER for a household that does nothing to manage its usage. The peak is only three weekday hours, 8.9% of the week, and E-21's off-peak price is below E-23's flat price in summer peak and winter. The direction reverses sharply for a household concentrated in the window: all 12,000 kWh inside 3-6 p.m. costs $2,805 on E-21 against $1,780 on E-23.
ARIZONA DOES NOT OBSERVE DAYLIGHT SAVING, and the plan is written in Mountain Standard Time, so the 3-6 p.m. window is the same clock hours all year. Utilities in DST states have to shift their periods; this one does not.
HOLIDAYS ARE OFF-PEAK under the plan - New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving and Christmas, as observed. This engine has no holiday concept, so those six weekdays a year are priced on-peak for their three afternoon hours when they should be off-peak. The effect is at most about $0.7 a year at 1 kWh an hour; it is an overstatement, never an understatement.
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Change history
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