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Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, EIA retail sales · How we got these numbers · Report an error

Avista Corp electricity: 274,115 accounts in Washington, SAIDI 112 min in 2024

In Washington, Avista Corp bills 274,115 accounts, 89.8% residential, as an investor owned utility. Major event days make 26% of its yearly outage minutes (152 with them, 112 without).

The Avista (formerly Washington Water Power) Post Street substation
PostStreetSubstation 20070317. Photo by Mark Wagner, CC BY 2.5, Wikimedia Commons. Illustrative, not a listed utility's plant.

At 901 kWh a month an Avista Corp home pays about $107 in energy: 11.87 ¢/kWh, 0.3% below the Washington average of 11.90 ¢.

Major event days make 26% of its yearly outage minutes (152 with them, 112 without).

Avista Corp: major event days

Share of SAIDI from major events
26%152 minutes with events, 112 without

Major events weigh on Avista Corp: 152 minutes with them, 112 without, so 26% of the total comes from event days, 1.36 times the everyday figure.

SAIFI adds the frequency view: 0.82 interruptions a customer a year, 0.81 times the national median (1.01), with 137 minutes per interruption.

How it compares

Avista Corp
Avista Corp, 2024HomeBusinessBillSAIDI
Avista Corp11.87 ¢/kWh12.77 ¢/kWh$107at 901 kWh112 minSAIDI
Washington average against this company, which is 14 of 18 on price+0.03 ¢/kWhcompany 0.3% below-2.78 ¢/kWhcompany 27.9% above+$0a month at 901 kWh+34 mincompany 34 below
PUD No 1 of Snohomish CountyLowest in this table11.51 ¢/kWhcompany 3.1% above9.45 ¢/kWhcompany 35.2% above$104$3 less than company181 mincompany 69 below

Compare 35 Washington companies

Avista Corp: 2025

No 2025 early-release row for Avista Corp; 2024 stays the latest year.

Avista Corp 2024 against Washington 2025
-1.30 ¢11.87 ¢ for Avista Corp in 2024, 13.17 ¢ for Washington in 2025

EIA's early release leaves Avista Corp out for 2025. Its newest record stays 2024: 11.87 ¢/kWh across 246,055 home accounts and 112 minutes of SAIDI.

Carbon context

Avista Corp serves 246,055 homes in Washington. At 901 kWh a month that is about 108 kg of CO₂, or 1,301 kg a year, at the Washington plant rate, state generation and not this utility: Washington generation mix.

Avista Corp charts

Residential price since 2015: 11.87 ¢ in 2024

9.35 ¢ in 2015, 11.87 ¢ in 2024 (+26.9%); Washington 9.09 to 11.90 ¢.

Avista Corp residential price 2015-2024, 2015 to 2024: 10 rows
YearAvista CorpGap to Washington residentialGap to U.S. residential
20159.35+0.26-3.30
20169.65+0.17-2.90
20179.97+0.31-2.92
201810.15+0.40-2.72
20199.86+0.15-3.15
20209.89+0.02-3.26
202110.00-0.11-3.66
202210.04-0.22-5.00
202310.78-0.20-5.22
202411.87-0.03-4.61

10 rows from EIA retail sales.

CSV

Avista Corp SAIDI, 2016-2024

127 min in 2016, 112 in 2024.

Avista Corp SAIDI by year, 2016 to 2024: 9 rows
YearAvista Corp, no major events
2016127
2017143
2018117
2019121
2020122
2021147
2022136
202387
2024112

9 rows from EIA-861 survey.

CSV

Reliability: SAIDI 112.0 min

112.0 min, 1.13x the median reporter, rank 372 of 673.

min

  • Company, no major events112.0
  • Company, with major events152.0

Avista Corp, Reliability: EIA-861 survey.

CSV

Analyst note

Avista Corp billed homes 9.35 ¢/kWh in 2015 and 11.87 ¢ in 2024, +26.9% in all, and lagged the Washington average (+30.9%) by 4.0 points. Avista Corp's sharpest move came in 2024, +10.1%. The latest year is the high at 11.87 ¢; the low was 9.35 ¢ (2015). 2024: +10.1% here, +8.4% for the Washington average. SAIDI at Avista Corp (major events excluded) went from 127 minutes in 2016 to 112 in 2024, -12%, between 87 (2023) and 147 (2021). At 112 minutes in 2024, Avista Corp sat +13 from the national SAIDI median, with 1 of 9 years below it. 2021: 548 minutes with major events, 147 without, the widest gap of any year. Avista Corp has 13 cheaper and 4 higher-priced Washington peers among 18 with 20,000+ homes. Next cheaper, PUD No 1 of Clallam County, bills 11.85 ¢ (-0.02). Next higher-priced, PUD No 1 of Grays Harbor County, bills 12.52 ¢ (+0.65).

Both measures are ordinary, -0.3% on price against Washington and 1.13x on outage minutes against the nation.

Home accounts at Avista Corp went from 220,344 in 2015 to 246,055 in 2024, +11.7%. Business customers paid 1.08 times the home price in 2024 (12.77 against 11.87 ¢); the ratio was 1.08 in 2015. SAIFI went from 0.83 in 2016 to 0.82 in 2024, between 0.71 and 1.11.

What kind of utility is Avista Corp?

Avista Corp files with EIA as an investor-owned utility. In Washington, investor-owned utilities serve 44% of residential customers at an average 13.8 cents per kWh. Avista Corp itself averaged 11.9 cents, 1.9 cents below its type in Washington.

Washington utilities by type · all states

Shutoffs for nonpayment, 2024

Shutoffs: this utility reported 11,285 disconnections for nonpayment in 2024, 4.5 per 100 accounts (Washington: 3.7; EIA Form EIA-112). All utilities.

Reliability and meters, 2024

In 2024 the average Avista Corp customer was without power 112 minutes without major events and 152 with them. That is 9th fewest of 19 Washington utilities with 10,000+ customers. The median Washington utility reported 136 minutes. Smart (AMI) meters: 99% of its 239,229 residential meters.

EIA-861 2024, retrieved 2026-10-01. Washington reliability, best and worst utilities, utility report card.

Facts

Customer accounts
274,1157.2% of Washington total
Residential accounts
246,0557.3% of Washington homes
Commercial accounts
27,2499.9% of the base
Residential rate
11.87 ¢/kWh14th place of 18, -0.3% against the state
Commercial rate
12.77 ¢/kWh28th place of 31, +27.9% against the state
SAIDI, no major events
112.0 minbetter than 45% of reporters
SAIFI, no major events
0.820.81x the median
SAIDI with major events
152.0 min26.3% from event days
Net-metered capacity
32.5 MW4,660 installations
Counties served
9Washington plus 2 more
Average residential use
10,815 kWh/yr901 a month
Implied monthly bill
$107-$42 on the U.S. rate, 901 kWh
Residential rate since 2015
+26.9%9.35 to 11.87 ¢/kWh
SAIDI trend
-12%127 min in 2016, 112 in 2024

Data tables

2024 by sector, Avista Corp

Avista Corp sectorAccountsRate ¢/kWhGap to Washington ¢/kWh
Residential246,05511.87-0.03
Commercial27,24912.77+2.78

Year by year, Avista Corp

YearHome accounts, Avista CorpHome ¢Business ¢RatioSAIDISAIFI
2015220,3449.3510.141.08No dataNo data
2016221,8299.6510.171.051270.83
2017224,6969.9710.181.021430.87
2018227,86610.1510.481.031170.79
2019230,7499.8610.681.081210.82
2020232,2739.8910.971.111220.85
2021237,08310.0011.171.121471.11
2022239,95810.0411.471.141360.84
2023243,52410.7811.971.11870.71
2024246,05511.8712.771.081120.82

Peers of Avista Corp in Washington, 14th place of 18 on home price

Utility near Avista Corp on priceSAIDI min, gap to Avista CorpHome ¢, gap to Avista CorpGap % to Avista CorpAccounts, Avista Corp = 1
11. City of Tacoma-32-1.05-8.9%0.74
12. PUD No 1 of Snohomish County+69-0.35-3.0%1.39
13. PUD No 1 of Clallam CountyNo data-0.02-0.1%0.12
14. Avista Corp (this utility)11211.87-1.00
15. PUD No 1 of Grays Harbor County+90+0.65+5.5%0.17
16. PUD No 3 of Mason CountyNo data+1.93+16.2%0.13
17. City of Seattle-1+2.22+18.7%1.87

Who buys Avista Corp's electricity

Class at Avista CorpAccountsOf Avista Corp accountsOf Avista Corp MWh soldkWh a year per Avista Corp account
Residential246,05589.8%45.3%10,815
Commercial27,2499.9%36.6%78,981
Industrial and other8110.30%18.2%1,316,244

Avista Corp among Washington investor owneds

Avista Corp and its neighbours on priceSAIDI min, gap to Avista CorpHome ¢, gap to Avista CorpAccounts, Avista Corp = 1
1. Avista Corp (WA, this utility)11211.871.00
2. Puget Sound Energy Inc (WA)+91+2.774.52

Avista Corp: meters, rate options and solar

MeasureAvista CorpWashington contextAvista Corp detail
Avista Corp home meters on AMI99.1%Washington 69.4%237,147 of 239,229 meters
Home meters, AMR (drive-by read)36Washington figure not published0.0% of meters
Time-of-use rate for Avista Corp homesNot on file4 of 8 Washington utilities offer oneno dynamic-pricing count filed by Avista Corp
Net-metered installations4,66095% residential18.1 homes per 1,000 accounts, 7.0 kW average

Monthly energy cost by use, Avista Corp

kWhShare of a 901 kWh monthCost a month at 11.87 ¢vs U.S.Cost a year
25028%$29.67-$11.53$356
50055%$59.33-$23.07$712
75083%$89.00-$34.60$1,068
1,000111%$118.67-$46.13$1,424
1,500166%$178.00-$69.20$2,136
2,000222%$237.33-$92.27$2,848

Outage record, Avista Corp

Measure, Avista CorpNo eventsAll eventsConverted
SAIDI minutes112.0152.01.87 h
SAIFI interruptions0.8200.9601.22 yr apart
CAIDI minutes136.6158.32.28 h

Territory of Avista Corp

9 Washington counties plus 2 other states, region WECC:

Counties served by Avista CorpLatahIdahoClearwaterShoshoneBenewahNez PerceBonnerKootenaiLewisSandersLincolnPend OreilleAsotinWhitmanSpokaneGrantFerryAdamsStevens

Washington other states: 19 of 19 counties of Avista Corp drawn

Avista Corp: 19 counties listed by EIA-861, Census 2023 outlines.

CSV
County list
  • Adams
  • Asotin
  • Ferry
  • Grant
  • Lincoln
  • Pend Oreille
  • Spokane
  • Stevens
  • Whitman

Questions on Avista Corp

How big is Avista Corp in Washington, by customer accounts?

274,115 accounts in 2024: residential 246,055, commercial 27,249, industrial 811.

How many cents per kWh does Avista Corp charge homes?

In 2024 homes paid 11.87 cents; against the Washington average that is -0.3%.

What are the SAIDI and SAIFI of Avista Corp?

SAIDI 112.0 min and SAIFI 0.82 a year, major events excluded; ratio to the national median 1.13, CAIDI 137 min.

How many net-metered systems connect to Avista Corp?

4,660 installations with 32.5 MW, of which residential installations number 4,445.

What would a typical Avista Corp home pay each month?

901 kWh at 11.87 cents comes to about $107, energy only.

Is Avista Corp cheaper than other Washington utilities?

Rank 14 of 18 in Washington on price, -0.3% against the state average; 13 charge less than 11.87 ¢.

How much of the Avista Corp load is business?

Homes take 45.3% of 5,880,681 MWh, commercial accounts 36.6%, industrial and other 18.2%; the 27,249 commercial accounts use 78,981 kWh each, 7.3 times a home.

Does Avista Corp have smart meters or TOU rates?

237,147 of 239,229 home meters are AMI, 99.1%. Avista Corp reports no home time-of-use rate; 4 of 8 Washington filers do.

Since 2015, has Avista Corp become cheaper than other Washington utilities?

13th cheapest of 18 in 2015, 14th of 18 in 2024; its price rose 26.9% while Washington rose 30.9%.

Has Avista Corp filed 2025 data with EIA?

Its latest filing year is 2024, with 112 SAIDI minutes and 11.87 cents for homes.

Utilities with a similar home price

Home prices nearest to Avista Corp at 11.87 ¢/kWh in 2024, among companies with a page here, any state.

More on Avista Corp

Rate plans on file

5 home plan records, energy charges: 8.3 to 16.7 ¢/kWh.

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

Primary sources for Avista Corp electricity: 274,115 accounts in Washington, SAIDI 112 min in 2024

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At 901 kWh a month an Avista Corp home pays about $107 in energy: 11.87 ¢/kWh, 0.3% below the Washington average of 11.90 ¢.

Cite this page

Underlying data are U.S. government works (EIA, Census Bureau). Our tables and charts: CC BY 4.0, credit Electric Consumer. The access date fills in when you open this page.

APA

Electric Consumer. (2026). Avista Corp storm outages: 11.87 ¢/kWh in 2024, SAIDI 112 min. Data as of 26 October 2026. Retrieved 26 October 2026, from https://electricconsumer.org/companies/avista-corp.html

MLA

Electric Consumer. “Avista Corp storm outages: 11.87 ¢/kWh in 2024, SAIDI 112 min.” Electric Consumer, data as of 26 October 2026, https://electricconsumer.org/companies/avista-corp.html. Accessed 26 October 2026.

Chicago

Electric Consumer. “Avista Corp storm outages: 11.87 ¢/kWh in 2024, SAIDI 112 min.” Data as of 26 October 2026. Accessed 26 October 2026. https://electricconsumer.org/companies/avista-corp.html.

BibTeX

@misc{usedata_companies_avista_corp,
  author = "Electric Consumer",
  title = {Avista Corp storm outages: 11.87 ¢/kWh in 2024, SAIDI 112 min},
  year = {2026},
  url = {https://electricconsumer.org/companies/avista-corp.html},
  note = {Data as of 26 October 2026. Accessed 26 October 2026}
}
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