BMW Plant Woodruff High-Voltage Battery Assembly

BMW Group’s $700 million Plant Woodruff is the high-voltage battery assembly facility being built on a 315-acre site in Spartanburg County, South Carolina, to supply Plant Spartanburg’s all-electric BMW X models. The plant is more than 1 million square feet, will employ at least 300 people on first phase, and is targeted for completion in 2026. It’s a single-story industrial facility executed design-build with Evans Construction, structurally straightforward but heavily process-driven.

Project Scope

The campus pairs the assembly hall with a technology building and a set of support buildings — cafeteria, fire department, and an on-site energy center sized for the line’s thermal and electrical loads. The energy center is the structural detail worth flagging: high-voltage battery assembly draws steady, high power, and the building had to be sited for direct utility tie-in plus the staging space for backup generation that the local grid asked for early in the design phase.

The mechanical and process scope is more involved than the building shell. Cell handling, electrolyte management, dry-room conditioning, and clean-area HVAC drive a significant share of the construction cost. Battery cells come from AESC’s new 30 GWh cell plant being built about 200 miles east in Florence, South Carolina — close enough to make a local-for-local supply chain practical, which was the strategic rationale for the site selection.

Sixth-generation BMW eDrive batteries, using newly developed round lithium-ion cells, will be the first product off the line. Output capacity hasn’t been publicly broken out by line, but the plant is sized to feed all electrified BMW production at Plant Spartanburg, including the three EV models BMW has confirmed for Spartanburg starting in 2026.

Why It Matters

Plant Woodruff is the operational backbone of BMW’s $1.7 billion US electrification push. Without local battery assembly, BMW’s North American EV strategy has to either rely on imported packs or run a complicated cell-to-pack logistics flow from outside the southeast. Local battery assembly tied to local cell production cuts inbound logistics, qualifies the vehicles for US tax-credit content rules, and keeps the South Carolina manufacturing ecosystem competitive against the Georgia and Tennessee EV cluster.

For the regional construction market, the Woodruff job is also a marker for how fast battery-plant work has matured. Cycle times that took two and a half years on the first generation of US battery plants are now running closer to eighteen months from groundbreaking to commissioning. Evans Construction, working on its largest single project to date, is one of the contractors benefiting from that compression.

Project Team & Details