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Washington-St Tammany E C, Inc
Washington-St Tammany E C, Inc served 51,187 residential customers in Louisiana in 2025 (2.4% of the state's residential customers), the 8th largest of 20 utilities reporting there. Bundled service; ownership: cooperative; balancing authority MISO.
The meter, one average month.
Scroll to run 30 days of Washington-St Tammany E C, Inc's average residential use through a five-dial register.
- Used so far
- 1,323 kWh
- At 11.04¢/kWh
- $146
Price ruler0 to 50¢ per kWh
Where 11.04¢ sits.
Washington-St Tammany E C, Inc averaged 11.04¢ per kWh against a Louisiana residential average of 12.57¢: 12.2% below the state figure. Among the 11 cooperative utilities in Louisiana with bundled residential sales, it ranks 2nd from the lowest price.
2020 and 2025EIA-861
Five years, same meter.
In 2020 the average Washington-St Tammany E C, Inc home used 1,313 kWh a month at 9.13¢ and paid $120. In 2025 it used 1,323 kWh at 11.04¢ and paid $146: the price per kWh is up 20.9%.
| Measure | 2020 | 2025 |
|---|---|---|
| Price, ¢/kWh | 9.13 | 11.04 |
| Use, kWh a month | 1,313 | 1,323 |
| Bill, US$ a month | 119.87 | 146.02 |
| Class | Customers | MWh sold | ¢/kWh |
|---|---|---|---|
| Residential | 51,187 | 812,621 | 11.04 |
| Commercial | 4,564 | 219,214 | 10.65 |
| Industrial | 1 | 2,877 | 13.95 |
Who else is on the line
Homes are one class.
Homes took 78.5% of the electricity Washington-St Tammany E C, Inc sold in Louisiana in 2025.
Rooftop solar on its linesnet metering
658 roofs.
- Residential net-metered PV
- 658installations reported for 2025
- Capacity
- 4.5 MWresidential, net metered
- Per 1,000 homes
- 12.9installations per 1,000 residential customers
Service territoryEIA-861
3 counties.
St TammanyTangipahoaWashington
Counties in Louisiana where Washington-St Tammany E C, Inc reported serving customers in 2025 (3 in all; up to 24 listed).
EIA-8612025Utility 21567
The filing, line by line.
| Measure | Value | Unit |
|---|---|---|
| Average price | 11.04 | ¢/kWh |
| Louisiana average price | 12.57 | ¢/kWh |
| Difference from state average | -12.2 | % |
| Price change over 5 years | 20.9 | % |
| Typical monthly use | 1,323 | kWh |
| Typical monthly bill | 146.02 | US$ |
| Residential customers | 51,187 | accounts |
| Share of LA residential customers | 2.4 | % |
| Size rank in LA | 8 of 20 | by customers |
| Price rank, cooperative peers | 2 of 11 | 1 = lowest |
Rate plans on fileOpenEI URDB
None shown for this page. Plan counts appear once per utility, on its largest state's bundled page; how plans are counted.
Louisiana: state average, five-year steps and every provider