Arizona Public Service Co electricity: 1,400,037 accounts in Arizona, SAIDI 81

Arizona Public Service Co is an investor owned utility serving 1,400,037 customer accounts in Arizona; 1,256,120 of them are residential. It connects 145.4 net-metered homes per 1,000 home accounts, 16.6 times the national median.

Aerial view of the Palo Verde nuclear generating station in the Arizona desert — PaloVerdeNuclearGeneratingStation. Photo by Cuhlik, Public domain, Wikimedia Commons. Illustrative, not a listed utility's plant.

At 1,034 kWh a month a Arizona Public Service Co home pays about $170 in energy: 16.45 ¢/kWh, 10.3% above the Arizona average of 14.91 ¢.

It connects 145.4 net-metered homes per 1,000 home accounts, 16.6 times the national median.

Rooftop solar on the Arizona Public Service Co grid

Net-metered homes per 1,000: 145.416.6x the national median of 8.7

Net metering stands out at Arizona Public Service Co: 182,657 residential installations on 1,256,120 home accounts, 145.4 per 1,000. That is place 1 of 9 Arizona utilities and 16.6 times the national median (8.7). All installations together total 2,015.0 MW, an average of 10.9 kW each.

How it compares

Arizona Public Service Co
Arizona Public Service Co, 2024	Home	Business	Bill	SAIDI
Arizona Public Service Co	16.45 ¢/kWh	13.23 ¢/kWh	$170at 1,034 kWh	81 minSAIDI
Arizona average against this company, which is 9 of 10 on priceLowest in this table	-1.54 ¢/kWhcompany 10.3% above	-1.00 ¢/kWhcompany 8.1% above	-$16a month at 1,034 kWh	+0 mincompany 0 below
UNS Electric, Inc	16.02 ¢/kWhcompany 2.7% above	15.23 ¢/kWhcompany 13.1% below	$1664 less than company	60 mincompany 21 above

Compare 15 Arizona companies

Arizona Public Service Co: 2025

Arizona Public Service Co: +3.5% on 2024 for homes, Arizona +2.7%.

Arizona Public Service Co home price, 2025: 17.03 ¢/kWh+3.5% on 2024, early release
Arizona Public Service Co SAIDI, 2025: 73 min-10% on 2024, early release
Arizona Public Service Co against Arizona, 2025: +0.8 pointsArizona Public Service Co +3.5%, Arizona +2.7%, price in Arizona 15.32 ¢

Arizona Public Service Co reported 17.03 ¢/kWh for homes in 2025, +3.5% on its 2024 figure of 16.45, while the Arizona average moved +2.7%. Its SAIDI is 73 minutes against 81 in 2024.

Carbon context

Arizona Public Service Co serves 1,256,120 homes in Arizona. At 1,034 kWh a month that is about 322 kg of CO₂, or 3,863 kg a year, at the Arizona plant rate, state generation and not this utility: Arizona generation mix.

Arizona Public Service Co charts

Residential price since 2015: 16.45 ¢ in 2024

12.93 ¢ in 2015, 16.45 ¢ in 2024 (+27.2%); Arizona 12.13 to 14.91 ¢.

Arizona Public Service Co residential price 2015-2024, 2015 to 2024: 10 rows

Year	Arizona Public Service Co	Gap to Arizona residential	Gap to U.S. residential
2015	12.93	+0.80	+0.28
2016	13.11	+0.96	+0.56
2017	13.57	+1.13	+0.68
2018	14.16	+1.39	+1.29
2019	13.60	+1.17	+0.59
2020	13.24	+0.97	+0.09
2021	13.45	+0.91	-0.21
2022	13.87	+0.85	-1.17
2023	15.31	+1.29	-0.69
2024	16.45	+1.54	-0.03

10 rows from EIA retail sales.

CSV

Arizona Public Service Co SAIDI, 2015-2024

87 min in 2015, 81 in 2024.

Arizona Public Service Co SAIDI by year, 2015 to 2024: 10 rows

Year	Arizona Public Service, no major events	Arizona Public Service, all events
2015	87	119
2016	87	119
2017	74	116
2018	86	153
2019	87	119
2020	79	84
2021	87	107
2022	84	138
2023	82	99
2024	81	87

10 rows from EIA-861 survey.

CSV

Reliability: SAIDI 80.9 min

80.9 min, 0.81x the median reporter, rank 268 of 673.

min

Company, no major events80.9
Company, with major events87.2

Arizona Public Service Co, Reliability: EIA-861 survey.

CSV

Analyst note

Arizona Public Service Co billed homes 12.93 ¢/kWh in 2015 and 16.45 ¢ in 2024, +27.2% in all, and outpaced the Arizona average (+22.9%) by 4.3 points. Arizona Public Service Co's sharpest move came in 2023, +10.4%. The latest year is the high at 16.45 ¢; the low was 12.93 ¢ (2015). 2024: +7.4% here, +6.3% for the Arizona average. SAIDI at Arizona Public Service Co (major events excluded) went from 87 minutes in 2015 to 81 in 2024, -7%, between 74 (2017) and 87 (2021). Arizona Public Service Co filed SAIDI under the national median in 10 of 10 years; its 2024 figure was 81 minutes, -19 from that year's median. 2018: 153 minutes with major events, 86 without, the widest gap of any year. Arizona Public Service Co has 8 cheaper and 1 higher-priced Arizona peers among 10 with 20,000+ homes. Next cheaper, UNS Electric, Inc, bills 16.02 ¢ (-0.43). Next higher-priced, Navajo Tribal Utility Authority, bills 16.63 ¢ (+0.18).

The rate is 10.3% above Arizona, while 81 outage minutes (0.81x the median) show no matching reliability edge.

Home accounts at Arizona Public Service Co went from 1,046,989 in 2015 to 1,256,120 in 2024, +20.0%. Business customers paid 0.80 times the home price in 2024 (13.23 against 16.45 ¢); the ratio was 0.86 in 2015. SAIFI went from 0.87 in 2015 to 0.88 in 2024, between 0.75 and 0.89.

Outages and home price of Arizona Public Service Co (EIA utility 803), 2013 to 2024

By 2024 the average Arizona Public Service Co customer sat through 81 minutes of outage, against 71 in 2013 (+14%). The low came in 2013 at 71, the high in 2021 at 87; 12 years were filed. The Arizona median in 2024 was 68 minutes, so Arizona Public Service Co ran above it.

Home rates at Arizona Public Service Co went from 12.59 ¢ in 2013 to 16.45 ¢ in 2024 (+30.7%), which is 17.39 ¢ to 16.88 ¢ in 2025 dollars (−2.9%). Over 12,000 kWh a year the real price meant $2,087 in 2013 and $2,026 in 2024. Of 22 Arizona utilities with 1,000+ home accounts in 2024, Arizona Public Service Co stood 18th cheapest (15th of 21 in 2013).

Arizona Public Service Co outage minutes a customer, 2013 to 2024: 81 in 2024

Arizona Public Service Co at 81 min in 2024 and the Arizona median at 68.

Arizona Public Service Co home price since 2013: −2.9% after inflation

Arizona Public Service Co: 16.88 ¢ in 2025 dollars (solid) and 16.45 ¢ as billed (dashed) in 2024.

Arizona Public Service Co, EIA utility 803, year by year among Arizona utilities

Arizona Public Service Co 2013-2024: 12 rows

Year, Arizona Public Ser	¢ billed	¢ in 2025 $	Price place, Arizona Public	SAIDI min	SAIFI	SAIDI place, Arizona Public	Arizona median SAIDI
2013	12.59	17.39	15 of 21	71	0.78	4 of 5	64
2014	12.77	17.37	17 of 22	79	0.79	5 of 5	58
2015	12.93	17.57	18 of 24	87	0.87	6 of 6	68
2016	13.11	17.59	21 of 26	87	0.82	6 of 7	65
2017	13.57	17.83	20 of 26	74	0.75	6 of 7	65
2018	14.16	18.15	23 of 27	86	0.84	10 of 10	44
2019	13.60	17.12	31 of 34	87	0.84	8 of 8	52
2020	13.24	16.48	18 of 22	79	0.85	7 of 8	45
2021	13.45	15.98	16 of 21	87	0.89	8 of 8	48
2022	13.87	15.25	14 of 22	84	0.89	8 of 9	55
2023	15.31	16.18	18 of 22	82	0.81	8 of 10	67
2024	16.45	16.88	18 of 22	81	0.88	7 of 11	68

Arizona Public Service C, EIA utility 803: EIA-861, CPI-U.

CSV

SAIDI explained, Arizona real prices.

Facts

Customer accounts: 1,400,03740.1% of Arizona total
Residential accounts: 1,256,12040.1% of Arizona homes
Commercial accounts: 141,34510.1% of the base
Residential rate: 16.45 ¢/kWhplace 9 of 10, +10.3% against the state
Commercial rate: 13.23 ¢/kWhplace 8 of 13, +8.1% against the state
SAIDI, no major events: 80.9 minbetter than 60% of reporters
SAIFI, no major events: 0.880.87x the median
SAIDI with major events: 87.2 min7.3% from event days
Net-metered capacity: 2,015.0 MW184,914 installations
Counties served: 14all in Arizona
Average residential use: 12,403 kWh/yr1,034 a month
Implied monthly bill: $170+$0 on the U.S. rate, 1,034 kWh
Residential rate since 2015: +27.2%12.93 to 16.45 ¢/kWh
SAIDI trend: -7%87 min in 2015, 81 in 2024

Data tables

2024 by sector, Arizona Public Service Co

Arizona Public Service Co sector	Accounts	Rate ¢/kWh	Gap to Arizona ¢/kWh
Residential	1,256,120	16.45	+1.54
Commercial	141,345	13.23	+1.00

Year by year, Arizona Public Service Co

Year	Home accounts, Arizona Public Service	Home ¢	Business ¢	Ratio	SAIDI	SAIFI
2015	1,046,989	12.93	11.17	0.86	87	0.87
2016	1,061,814	13.11	11.27	0.86	87	0.82
2017	1,080,665	13.57	11.37	0.84	74	0.75
2018	1,100,816	14.16	11.51	0.81	86	0.84
2019	1,123,829	13.60	10.94	0.80	87	0.84
2020	1,150,194	13.24	10.67	0.81	79	0.85
2021	1,177,343	13.45	10.99	0.82	87	0.89
2022	1,202,975	13.87	11.52	0.83	84	0.89
2023	1,228,022	15.31	12.78	0.83	82	0.81
2024	1,256,120	16.45	13.23	0.80	81	0.88

Peers of Arizona Public Service Co in Arizona, place 9 of 10 on home price

Utility near Arizona Public Service Co on price	SAIDI min, gap to Arizona Public Service Co	Home ¢, gap to Arizona Public Service Co	Gap % to Arizona Public Service Co	Accounts, Arizona Public Service Co = 1
6. Trico Electric Cooperative Inc	+2	-2.28	-13.9%	0.04
7. Tucson Electric Power Co	-13	-0.82	-5.0%	0.33
8. UNS Electric, Inc	-21	-0.43	-2.6%	0.08
9. Arizona Public Service Co (this utility)	81	16.45	-	1.00
10. Navajo Tribal Utility Authority	No data	+0.18	+1.1%	0.02

Who buys Arizona Public Service Co's electricity

Class at Arizona Public Service Co	Accounts	Of Arizona Public Service Co accounts	Of Arizona Public Service Co MWh sold	kWh a year per Arizona Public Service Co account
Residential	1,256,120	89.7%	46.2%	12,403
Commercial	141,345	10.1%	47.7%	113,700
Industrial and other	2,572	0.18%	6.1%	797,563

Arizona Public Service Co: meters, rate options and solar

Measure	Arizona Public Service Co	Arizona context	Arizona Public Service Co detail
Arizona Public Service Co home meters on AMI	90.9%	Arizona 93.4%	1,256,767 of 1,383,220 meters
Home meters, AMR (drive-by read)	126,453	Arizona figure not published	9.1% of meters
Time-of-use rate for Arizona Public Service Co homes	Offered	10 of 11 Arizona utilities offer one	772,896 homes on dynamic pricing, 61.53% of 1,256,120
Net-metered installations	184,914	99% residential	145.4 homes per 1,000 accounts, 10.9 kW average

Monthly energy cost by use, Arizona Public Service Co

kWh	Share of a 1,034 kWh month	Cost a month at 16.45 ¢	vs U.S.	Cost a year
250	24%	$41.13	-$0.07	$494
500	48%	$82.25	-$0.15	$987
750	73%	$123.38	-$0.22	$1,481
1,000	97%	$164.50	-$0.30	$1,974
1,500	145%	$246.76	-$0.44	$2,961
2,000	194%	$329.01	-$0.59	$3,948

Outage record, Arizona Public Service Co

Measure, Arizona Public Servi	No events	All events	Converted
SAIDI minutes	80.9	87.2	1.35 h
SAIFI interruptions	0.880	0.930	1.14 yr apart
CAIDI minutes	91.9	93.8	1.53 h

Territory of Arizona Public Service Co

14 Arizona counties, region WECC:

Arizona other states: 14 of 14 counties of Arizona Public Service Co drawn

Arizona Public Service Co: 14 counties listed by EIA-861, Census 2023 outlines.

CSV

County list

Apache
Cochise
Coconino
Gila
Graham
Greenlee
Maricopa
Mohave
Navajo
Pima
Pinal
Santa Cruz
Yavapai
Yuma

Questions on Arizona Public Service Co

How big is Arizona Public Service Co in Arizona, by customer accounts?

1,400,037 accounts in 2024: residential 1,256,120, commercial 141,345, industrial 2,572.

How many cents per kWh does Arizona Public Service Co charge homes?

In 2024 homes paid 16.45 cents; against the Arizona average that is +10.3%.

What are the SAIDI and SAIFI of Arizona Public Service Co?

SAIDI 80.9 min and SAIFI 0.88 a year, major events excluded; ratio to the national median 0.81, CAIDI 92 min.

How many net-metered systems connect to Arizona Public Service Co?

184,914 installations with 2,015.0 MW, of which residential installations number 182,657.

What would a typical Arizona Public Service Co home pay each month?

1,034 kWh at 16.45 cents comes to about $170, energy only.

Is Arizona Public Service Co cheaper than other Arizona utilities?

Rank 9 of 10 in Arizona on price, +10.3% against the state average; 8 charge less than 16.45 ¢.

How much of the Arizona Public Service Co load is business?

Homes take 46.2% of 33,701,404 MWh, commercial accounts 47.7%, industrial and other 6.1%; the 141,345 commercial accounts use 113,700 kWh each, 9.2 times a home.

Does Arizona Public Service Co have smart meters or TOU rates?

1,256,767 of 1,383,220 home meters are AMI, 90.9%. Arizona Public Service Co offers a home time-of-use rate; 772,896 customers use dynamic pricing, 61.53% of its homes.

Since 2015, has Arizona Public Service Co become cheaper than other Arizona utilities?

6th cheapest of 10 in 2015, 9th of 10 in 2024; its price rose 27.2% while Arizona rose 22.9%.

What did Arizona Public Service Co charge homes in 2025?

17.03 cents per kWh, +3.5% on the 16.45 of 2024 (EIA early release for 2025).

Utilities with a similar home price

Home prices nearest to Arizona Public Service Co at 16.45 ¢/kWh in 2024, among companies with a page here, any state.

Choptank Electric Cooperative, IncMaryland, 16.46 ¢/kWh, 0.01 ¢ above
Grayson-Collin Elec Coop, IncTexas, 16.40 ¢/kWh, 0.05 ¢ below
Delmarva PowerDelaware, 16.37 ¢/kWh, 0.08 ¢ below
Direct Energy ServicesTexas, 16.37 ¢/kWh, 0.08 ¢ below

Rate plans on file

14 home plan records, energy charges: 6.1 to 42.8 ¢/kWh.

Time-of-use: 10, e.g. Time Advantage 7pm to noon
Tiered: 2, e.g. Residential Service Standard (E-12) Low Income
Demand charge: 4, e.g. Residential Service TOU Combined Advantage 7PM-Noon (ECT-2) [Frozen]

Who offers time-of-use and tiered rates (17 Apr 2026 snapshot).

Primary sources for Arizona Public Service Co electricity: 1,400,037 accounts in Arizona, SAIDI 81

EIA-861 annual report entry for Arizona Public Service Co electricity: 1,400,037 accounts in Arizona, SAIDI 81, customers and sales
EIA-861 form instructions for Arizona Public Service Co electricity: 1,400,037 accounts in Arizona, SAIDI 81, how a customer is counted
EIA state profiles for Arizona Public Service Co electricity: 1,400,037 accounts in Arizona, SAIDI 81, the state price average