Iberville Parish, Louisiana: Power, Data Centers and the Local Economy
Home to St. Gabriel, Plaquemine and White Castle
Iberville Parish hosts some of the generating capacity Louisiana runs on. Iberville Parish is home to St. Gabriel, Plaquemine, White Castle and Maringouin. Construction employs 2,683, up 18.2% since 2019, and construction is 3.1 times as concentrated here as in the U.S. economy. 400 MW of new generation is planned here across 2 units, led by Entergy Louisiana LLC (solar), the 5th largest pipeline among Louisiana's counties. Its power plants have 2,683 MW of capacity, 99% of it natural gas, the 4th largest fleet in Louisiana. 464 MW has retired here since 2019, including LaO Energy Systems (natural gas, 464 MW, 2024).
Cities and towns in Iberville Parish
Iberville Parish is home to St. Gabriel, Plaquemine, White Castle and Maringouin.
Unincorporated communities (governed by the county): Bayou Goula, Crescent, Dorseyville.
Residents are 2025 Census estimates for the part of each city, town or township inside this county. Census publishes no annual estimate for unincorporated communities.
What changed in Iberville Parish
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Louisiana |
|---|---|---|---|---|
| Population (2020 → 2025) | 30,070 | 29,579 | ▼ 1.6% | 34th of 64 by size |
| Total jobs (2019 → 2025) | 15,369 | 16,383 | ▲ 6.6% | 12th of 64 by growth |
| Average annual pay (2019 → 2025) | $70,423 | $89,292 | ▲ 26.8% | — |
| Construction jobs (2019 → 2025) | 2,270 | 2,683 | ▲ 18.2% | 20th of 43 by growth |
| Unemployment rate (2019 → August 2026) | 5.9% | 4.3% | ▼ 1.6pts | — |
| Generating capacity added since 2019 | — | 821 MW | — | |
| Generating capacity retired since 2019 | — | 464 MW | — | |
| Planned generation (Aug 2026) | — | 400 MW | 15% of today's fleet | 5th of 14 by size |
821 MW of that came online in 2019 or later, mostly natural gas. Next door, Pointe Coupee Parish has 2,341 MW of planned generation. Unemployment was 4.3% in August 2026, against 5.9% in 2019. Employers here counted 16,383 jobs in 2025, up 6.6% from 2019. Entergy Louisiana LLC is the largest utility serving Iberville Parish, one of 3 with territory here. Its residential customers paid an average 11.05¢/kWh in 2024, below the 11.88¢ median for Louisiana utilities. 29,579 people live here, down 1.6% since 2020.
Who powers Iberville Parish
Net change in operating capacity since 2019: +356 MW. Colors follow the fuel legend above.
Utilities with service territory in Iberville Parish
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| Entergy Louisiana LLC | Investor Owned | Bundled | 957,522 | 11.05¢ | 20% |
| Pointe Coupee Elec Member Corp | Cooperative | Bundled | 8,255 | 13.42¢ | 24% |
| City of Plaquemine - (LA) | — | — | — | — | — |
Customer counts, prices and sales shares cover each utility's whole system in the state, not only this county. Commercial sales include data centers.
Operating power plants 5
| Technology | Capacity | Share |
|---|---|---|
| Natural gas | 2,669 MW | 99% |
| Other technologies | 10 MW | 0% |
| Petroleum | 4 MW | 0% |
| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| Plaquemine Cogeneration Plant | Dow Chemical Co | Natural gas | 1,085 MW | 2004 |
| Magnolia Power | Magnolia Power Holdings LLC | Natural gas | 723 MW | 2025 |
| Carville Energy LLC | Carville Energy LLC | Natural gas | 555 MW | 2003 |
| Westlake Plaquemine | Westlake Chemicals & Vinyls LLC | Natural gas | 306 MW | 1997 |
| PCS Nitrogen Fertilizer LP | PCS Nitrogen LP | Petroleum | 14 MW | 2006 |
Planned generation 2
| Plant | Technology | MW | Status | Year | Owner |
|---|---|---|---|---|---|
| Cypress Harvest Solar Station | Solar Photovoltaic | 200 MW | Planned, approvals not started | 2028 | Entergy Louisiana LLC |
| Cypress Harvest Solar Station | Batteries | 200 MW | Planned, approvals not started | 2029 | Entergy Louisiana LLC |
Retired since 2019
| Plant | Technology | MW | Year |
|---|---|---|---|
| LaO Energy Systems | Natural gas | 464 MW | 2024 |
The Iberville Parish labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 16,383 | $89,292 | 1.00 |
| Construction | 2,683 | $86,195 | 3.09 |
Concentration is the BLS location quotient: 1.0 means the industry holds the same share of local jobs as it does nationally. Industry rows count private employers; cells BLS suppresses are left out.
Data centers and local rules in Iberville Parish
No data center, local measure or delayed project is on record in Iberville Parish. Louisiana has 3 local measures on record statewide.
Iberville Parish and its neighbors
Of the 7 counties that border Iberville Parish, Pointe Coupee Parish carries the most build-out activity: data centers, planned generation and operating plants combined.
| County | Population | Jobs since 2019 | Operating MW | Planned MW | Data centers | Local measures |
|---|---|---|---|---|---|---|
| Iberville Parish | 29,579 | ▲ 6.6% | 2,683 MW | 400 MW | — | — |
| Ascension Parish | 135,105 | ▲ 7.4% | 248 MW | — | — | — |
| Assumption Parish | 19,720 | ▲ 2.6% | — | — | — | — |
| East Baton Rouge Parish | 456,180 | ▲ 2.0% | 832 MW | — | 6 | — |
| Iberia Parish | 66,846 | ▼ 7.1% | 1 MW | — | — | — |
| Pointe Coupee Parish | 19,520 | ▼ 1.0% | 2,855 MW | 2,341 MW | — | — |
| St. Martin Parish | 51,106 | ▲ 3.5% | — | — | — | — |
| West Baton Rouge Parish | 28,756 | ▲ 8.1% | 58 MW | — | — | — |
More of Louisiana
Iberville Parish, answered from the record
Who provides electricity in Iberville Parish, Louisiana?
3 utilities have service territory in Iberville Parish in the EIA-861 2024 report: Entergy Louisiana LLC, Pointe Coupee Elec Member Corp, City of Plaquemine - (LA). The largest, Entergy Louisiana LLC, charged residential customers 11.05¢/kWh on average in 2024.
What power plants are in Iberville Parish?
5 operating plants with 2,683 MW of capacity. The largest is Plaquemine Cogeneration Plant (1,085 MW, natural gas).
How much new power is planned in Iberville Parish?
400 MW across 2 units in the August 2026 EIA-860M inventory, 0 MW of it under construction or built. The largest owner is Entergy Louisiana LLC.
Are there data centers in Iberville Parish?
The SAVRN Data Center Map has no data center in Iberville Parish. The nearest activity on record is next door in Pointe Coupee Parish.
Is Iberville Parish adding jobs?
Employers counted 16,383 jobs in 2025 against 15,369 in 2019 (+6.6%, BLS QCEW). Construction went from 2,270 to 2,683.
Does Iberville Parish have a data center moratorium?
No county-level measure is on record for Iberville Parish. Louisiana has 3 local measures statewide, listed on the state page.