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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

Washington-St Tammany E C, Inc: 11.85 ¢/kWh for homes, 242 minutes of SAIDI

Roughly 55,599 Louisiana accounts belong to Washington-St Tammany E C, Inc, classed by EIA as cooperative; the residential count is 50,901. Its SAIDI of 242 minutes is 2.43 times the national median reporter (99).

At 1,293 kWh a month a Washington-St Tammany E C, Inc home pays about $153 in energy: 11.85 ¢/kWh, 1.0% above the Louisiana average of 11.73 ¢.

Its SAIDI of 242 minutes is 2.43 times the national median reporter (99).

Washington-St Tammany E C, Inc: outage minutes

SAIDI against national median
2.43x242 minutes against 99

Reliability is the sharpest contrast for Washington-St Tammany E C, Inc: 242 minutes a year without power per customer, 2.43 times the national median of 99. Among 6 Louisiana utilities that report SAIDI it ranks 5 (1 = fewest minutes); the Louisiana median is 224.

SAIFI adds the frequency view: 2.61 interruptions a customer a year, 2.58 times the national median (1.01), with 93 minutes per interruption.

How it compares

Washington-St Tammany E C, Inc
Washington-St Tammany E C, Inc, 2024HomeBusinessBillSAIDI
Washington-St Tammany E C, Inc11.85 ¢/kWh11.45 ¢/kWh$153at 1,293 kWh242 minSAIDI
Louisiana average against this company, which is 4 of 10 on priceLowest in this table-0.12 ¢/kWhcompany 1.0% above-0.99 ¢/kWhcompany 9.4% above-$2a month at 1,293 kWh-18 mincompany 18 above
Dixie Electric Membership Corp11.91 ¢/kWhcompany 0.5% below12.05 ¢/kWhcompany 5.0% below$1541 more than company235 mincompany 7 above

Compare 19 Louisiana companies

Washington-St Tammany E C, Inc: 2025

Washington-St Tammany E C, Inc: -6.8% on 2024 for homes, Louisiana +7.2%.

Washington-St Tammany E C, Inc home price, 2025
11.04 ¢/kWh-6.8% on 2024, early release
Washington-St Tammany E C, Inc SAIDI, 2025
484 min+100% on 2024, early release
Washington-St Tammany E C, Inc against Louisiana, 2025
-14.0 pointsWashington-St Tammany E C, Inc -6.8%, Louisiana +7.2%, price in Louisiana 12.57 ¢

Washington-St Tammany E C, Inc: 11.04 ¢/kWh in the 2025 early release, -6.8% from 11.85 ¢; Louisiana as a whole went +7.2%, so Washington-St Tammany E C, Inc trailed it by 14.0 points. Its SAIDI is 484 minutes against 242 in 2024.

Carbon context

Washington-St Tammany E C, Inc serves 50,901 homes in Louisiana. At 1,293 kWh a month that is about 447 kg of CO₂, or 5,359 kg a year, at the Louisiana plant rate, state generation and not this utility: Louisiana generation mix.

Washington-St Tammany E C, Inc charts

Residential price since 2015: 11.85 ¢ in 2024

9.19 ¢ in 2015, 11.85 ¢ in 2024 (+28.9%); Louisiana 9.33 to 11.73 ¢.

Washington-St Tammany E C, Inc residential price 2015-2024, 2015 to 2024: 10 rows
YearWashington-St Tammany E C, IGap to Louisiana residentialGap to U.S. residential
20159.19-0.14-3.46
20169.49+0.15-3.06
20179.54-0.20-3.35
20189.39-0.20-3.48
20199.56-0.24-3.45
20209.13-0.54-4.02
20219.62-1.40-4.04
202211.06-1.87-3.98
202310.76-0.79-5.24
202411.85+0.12-4.63

10 rows from EIA retail sales.

CSV

Washington-St Tammany E C, Inc SAIDI, 2015-2024

322 min in 2015, 242 in 2024.

Washington-St Tammany E C, Inc SAIDI by year, 2015 to 2024: 10 rows
YearWashington-St Tammany , no major events
2015322
2016270
2017268
2018358
2019374
2020292
2021613
2022322
2023387
2024242

10 rows from EIA-861 survey.

CSV

Reliability: SAIDI 241.9 min

241.9 min, 2.43x the median reporter, rank 574 of 673.

min

  • Company, no major events241.9
  • Company, with major events1,507.5

Washington-St Tammany E C, Inc, Reliability: EIA-861 survey.

CSV

Analyst note

From 9.19 ¢ in 2015 to 11.85 ¢ in 2024, a move of +28.9%: Washington-St Tammany E C, Inc outpaced its state (+25.7%) by 3.2 points, and -1.4 points against the U.S. Washington-St Tammany E C, Inc's sharpest move came in 2022, +15.0%. The latest year is the high at 11.85 ¢; the low was 9.13 ¢ (2020). 2024: +10.1% here, +1.6% for the Louisiana average. SAIDI at Washington-St Tammany E C, Inc (major events excluded) fell from 322 minutes in 2015 to 242 in 2024, -25%; best year 2024 at 242. Washington-St Tammany E C, Inc filed SAIDI under the national median in 0 of 10 years; its 2024 figure was 242 minutes, +142 from that year's median. 2021: 7546 minutes with major events, 613 without, the widest gap of any year. Washington-St Tammany E C, Inc has 3 cheaper and 6 higher-priced Louisiana peers among 10 with 20,000+ homes. Next cheaper, Southwest Louisiana E M C, bills 11.55 ¢ (-0.29). Next higher-priced, Dixie Electric Membership Corp, bills 11.91 ¢ (+0.06).

The rate is within 1.0% of Louisiana, but reliability is the weak side: 242 minutes, 2.4 times the national median.

Home accounts at Washington-St Tammany E C, Inc went from 46,826 in 2015 to 50,901 in 2024, +8.7%. Business customers paid 0.97 times the home price in 2024 (11.45 against 11.85 ¢); the ratio was 0.96 in 2015. SAIFI went from 2.13 in 2015 to 2.61 in 2024, between 1.31 and 3.74.

Facts

Customer accounts
55,5992.3% of Louisiana total
Residential accounts
50,9012.4% of Louisiana homes
Commercial accounts
4,6978.4% of the base
Residential rate
11.85 ¢/kWhplace 4 of 10, +1.0% against the state
Commercial rate
11.45 ¢/kWhplace 9 of 19, +9.4% against the state
SAIDI, no major events
241.9 minbetter than 15% of reporters
SAIFI, no major events
2.612.58x the median
SAIDI with major events
1507.5 min84.0% from event days
Net-metered capacity
4.4 MW693 installations
Counties served
3all in Louisiana
Average residential use
15,516 kWh/yr1,293 a month
Implied monthly bill
$153-$60 on the U.S. rate, 1,293 kWh
Residential rate since 2015
+28.9%9.19 to 11.85 ¢/kWh
SAIDI trend
-25%322 min in 2015, 242 in 2024

Data tables

2024 by sector, Washington-St Tammany E C, Inc

Washington-St Tammany E C, Inc sectorAccountsRate ¢/kWhGap to Louisiana ¢/kWh
Residential50,90111.85+0.12
Commercial4,69711.45+0.99

Year by year, Washington-St Tammany E C, Inc

YearHome accounts, Washington-St Tammany Home ¢Business ¢RatioSAIDISAIFI
201546,8269.198.860.963222.13
201647,2709.499.190.972702.95
201746,8269.549.210.972682.88
201848,1829.399.020.963583.74
201948,5789.569.110.953743.37
202049,0129.138.810.962922.90
202149,6519.629.190.966133.58
202250,07611.0610.610.963223.30
202350,57710.7610.310.963871.31
202450,90111.8511.450.972422.61

Peers of Washington-St Tammany E C, Inc in Louisiana, place 4 of 10 on home price

Utility near Washington-St Tammany E C, Inc on priceSAIDI min, gap to Washington-St Tammany E C, IncHome ¢, gap to Washington-St Tammany E C, IncGap % to Washington-St Tammany E C, IncAccounts, Washington-St Tammany E C, Inc = 1
1. City of Lafayette-209-1.73-14.6%1.30
2. Entergy Louisiana LLC-29-0.79-6.7%19.95
3. Southwest Louisiana E M CNo data-0.29-2.5%2.11
4. Washington-St Tammany E C, Inc (this utility)24211.85-1.00
5. Dixie Electric Membership Corp-7+0.06+0.5%2.14
6. Cleco Power LLCNo data+0.48+4.1%5.31
7. Claiborne Electric Coop, IncNo data+1.15+9.7%0.43

Who buys Washington-St Tammany E C, Inc's electricity

Class at Washington-St Tammany E C, IncAccountsOf Washington-St Tammany E C, Inc accountsOf Washington-St Tammany E C, Inc MWh soldkWh a year per Washington-St Tammany E C, Inc account
Residential50,90191.6%78.4%15,516
Commercial4,6978.4%21.4%46,026
Industrial and other10.00%0.2%1,949,000

Washington-St Tammany E C, Inc among Louisiana cooperatives

Washington-St Tammany E C, Inc and its neighbours on priceSAIDI min, gap to Washington-St Tammany E C, IncHome ¢, gap to Washington-St Tammany E C, IncAccounts, Washington-St Tammany E C, Inc = 1
1. Washington-St Tammany E C, Inc (LA, this utility)24211.851.00
2. Dixie Electric Membership Corp (LA)-7+0.062.14

Washington-St Tammany E C, Inc: meters, rate options and solar

MeasureWashington-St Tammany E C, IncLouisiana contextWashington-St Tammany E C, Inc detail
Time-of-use rate for Washington-St Tammany E C, Inc homesNot on file2 of 6 Louisiana utilities offer oneno dynamic-pricing count filed by Washington-St Tammany E C, Inc
Net-metered installations69399% residential13.4 homes per 1,000 accounts, 6.3 kW average

Monthly energy cost by use, Washington-St Tammany E C, Inc

kWhShare of a 1,293 kWh monthCost a month at 11.85 ¢vs U.S.Cost a year
25019%$29.62-$11.58$355
50039%$59.24-$23.16$711
75058%$88.87-$34.73$1,066
1,00077%$118.49-$46.31$1,422
1,500116%$177.73-$69.47$2,133
2,000155%$236.98-$92.62$2,844

Outage record, Washington-St Tammany E C, Inc

Measure, Washington-St TammanNo eventsAll eventsConverted
SAIDI minutes241.91507.54.03 h
SAIFI interruptions2.6104.9300.38 yr apart
CAIDI minutes92.7305.81.54 h

Territory of Washington-St Tammany E C, Inc

3 Louisiana counties, region SERC:

Counties served by Washington-St Tammany E C, IncWashingtonSt. TammanyTangipahoa

Louisiana other states: 3 of 3 counties of Washington-St Tammany E C, Inc drawn

Washington-St Tammany E C, Inc: 3 counties listed by EIA-861, Census 2023 outlines.

CSV
County list
  • St Tammany
  • Tangipahoa
  • Washington

Questions on Washington-St Tammany E C, Inc

How many customers does Washington-St Tammany E C, Inc serve in Louisiana?

55,599 accounts in 2024: residential 50,901, commercial 4,697, industrial 1.

What is the average residential rate of Washington-St Tammany E C, Inc?

In 2024 homes paid 11.85 cents; against the Louisiana average that is +1.0%.

How reliable is Washington-St Tammany E C, Inc by SAIDI and SAIFI?

SAIDI 241.9 min and SAIFI 2.61 a year, major events excluded; ratio to the national median 2.43, CAIDI 93 min.

How much solar net metering is on the Washington-St Tammany E C, Inc grid?

693 installations with 4.4 MW, of which residential installations number 684.

What is the monthly bill at Washington-St Tammany E C, Inc for average use?

1,293 kWh at 11.85 cents comes to about $153, energy only.

How does Washington-St Tammany E C, Inc rank on price within Louisiana?

Rank 4 of 10 in Louisiana on price, +1.0% against the state average; 3 charge less than 11.85 ¢.

How much of the Washington-St Tammany E C, Inc load is business?

Homes take 78.4% of 1,007,933 MWh, commercial accounts 21.4%, industrial and other 0.2%; the 4,697 commercial accounts use 46,026 kWh each, 3.0 times a home.

Does Washington-St Tammany E C, Inc have smart meters or TOU rates?

Washington-St Tammany E C, Inc reports no home time-of-use rate; 2 of 6 Louisiana filers do.

Since 2015, has Washington-St Tammany E C, Inc become cheaper than other Louisiana utilities?

5th cheapest of 10 in 2015, 4th of 10 in 2024; its price rose 28.9% while Louisiana rose 25.7%.

Did Washington-St Tammany E C, Inc cut or raise its 2025 home price?

11.04 cents per kWh, -6.8% on the 11.85 of 2024 (EIA early release for 2025).

Utilities with a similar home price

Home prices nearest to Washington-St Tammany E C, Inc at 11.85 ¢/kWh in 2024, among companies with a page here, any state.

More on Washington-St Tammany E C, Inc

Rate plans on file

1 home plan record, energy charges: 8.0 to 8.8 ¢/kWh.

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

Primary sources for Washington-St Tammany E C, Inc: 11.85 ¢/kWh for homes, 242 minutes of SAIDI

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At 1,293 kWh a month a Washington-St Tammany E C, Inc home pays about $153 in energy: 11.85 ¢/kWh, 1.0% above the Louisiana average of 11.73 ¢.