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Southwire breaks ground on Mississippi plant expansion as electrical demand grows

Southwire breaks ground on Mississippi plant expansion as electrical demand grows

Built World

The $256 million Starkville project adds 380,000 square feet and about 130 jobs as data centers and electrification drive wire demand.

October 1st, 2026: Southwire breaks ground on the expansion

Overview

Updated 2 hours ago

Southwire broke ground October 1 on a $256 million expansion of its Starkville, Mississippi, cable plant. The project adds about 380,000 square feet and is expected to lift monthly cable output by roughly 300 percent, to 15 to 20 million pounds.

The work is part of a $2 billion companywide modernization tied to rising electricity demand from data centers and grid electrification. Construction starts late 2026, with full capacity targeted for 2028.

Why it matters

Every data center and grid upgrade needs miles of cable; Southwire is building the factory capacity the sector will rely on by 2028.

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Key Indicators

$256 million
Expansion investment
Southwire's corporate investment in the Starkville campus expansion.
380,000 sq ft
Added manufacturing space
New footprint at the Starkville plant, including a six-story extrusion tower.
~130
New jobs expected
Southwire and state estimates range from 128 to 139 positions.
~300%
Production increase
Monthly cable output expected to rise to 15-20 million pounds by 2028.

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People Involved

Organizations Involved

Timeline

1979 January 2028

7 events Latest: October 1st, 2026 · 1 week ago
Tap a bar to jump to that date
  1. Expansion expected complete

    Upcoming Projection

    The project is targeted for completion by January 2028, with full capacity that year.

  2. Southwire breaks ground on the expansion

    Latest Milestone

    Southwire, state and local officials break ground on the $256 million project.

  3. Mississippi officials announce the expansion

    Announcement

    The $256 million plan, code-named 'Project Jacket,' is publicly revealed.

  4. Construction set to begin

    Milestone

    Demolition of two structures and site prep start in late 2026.

  5. First campus expansion adds distribution center

    Milestone

    Southwire builds an onsite distribution center, its first expansion of the campus.

  6. Southwire acquires the Starkville plant

    Ownership

    Southwire takes over the cable facility from Phelps-Dodge.

  7. Phelps-Dodge opens the Starkville plant

    Milestone

    The original facility opens under Phelps-Dodge ownership.

Scenarios

1

Starkville expansion reaches full capacity in 2028

Likely Resolves by End of 2028

Discussed by: Southwire's stated timeline and Mississippi economic development officials

Construction proceeds on schedule through 2027, with the expanded plant reaching its target of 15 to 20 million pounds of monthly cable output by 2028. The roughly 130 new hires staff production, distribution, and engineering roles. This is the outcome Southwire's announced timeline projects.

2

Construction delays push completion into 2029

Possible Resolves by Q2 2028

Discussed by: The Dispatch, which reported a January 2028 completion target

Supply chain snags, labor shortages, or redesigns slip the schedule. Southwire's existing plant keeps running, but the new capacity and its jobs arrive later than promised, pushing full production into 2029.

3

Data center demand cools, leaving new capacity underused

Unlikely Resolves by Q2 2029

Discussed by: Industry analysts tracking data center capex cycles; the 1999-2000 fiber buildout parallels

If the data center buildout slows or electrification spending dips, Southwire's added capacity runs below its 15 to 20 million pound monthly target. The investment and its new jobs still exist but sit underutilized. This is the downside the company's bet is exposed to.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

2010

Southwire's first Starkville expansion (2010)

Southwire opened its first expansion of the Starkville campus, adding an onsite distribution center. The plant had run without a major addition since it opened in 1979.

Then

Strengthened customer service with on-site distribution capacity.

Now

Established the campus as a growth site; the 2026 project is the second expansion.

Why this matters now

Shows the Starkville campus grows in decade-scale steps tied to demand, and this is the largest investment of the three.

1999-2000

The fiber-optic buildout (1999-2000)

Telecom carriers laid vast fiber capacity betting internet traffic would keep doubling, borrowing heavily to fund construction.

Then

Overcapacity emerged; much fiber sat dark and the bubble burst in 2000-2001, pushing carriers into bankruptcy.

Now

Left a glut of cheap bandwidth for years and a cautionary tale about demand-driven overbuilding.

Why this matters now

Data center cable demand resembles that bet: rapid buildout justified by surging usage, with the risk that forecasts outrun real demand.

Sources

(10)