Stage 2 · Compare solutions
Factory capacity expansion options compared: shifts, debottlenecking, new line, new plant or contract manufacturing
By the Global B2B Group project team · Published · Editorial guidance, not engineering, legal or financial advice
Short answer: Choose the smallest option that closes the measured capacity gap for long enough: extra shifts or debottlenecking for modest, near-term gaps; a line upgrade or new line when the constraint is structural; a new turnkey plant only when site, market or logistics require it; contract manufacturing to test demand before committing CAPEX.
Debottlenecking: increasing output by raising the capacity of the single process step that limits the whole line, rather than adding a complete new line.
The six options
| Option | Pros | Cons / limitations | Fits when |
|---|---|---|---|
| Extra shifts / overtime | Lowest CAPEX, fast to start | Labour availability, fatigue, maintenance windows shrink | Gap is moderate and possibly temporary |
| Debottlenecking | Targets the real constraint; moderate CAPEX | Next bottleneck appears; needs good data | One station clearly limits output |
| Line upgrade / automation retrofit | Reuses building and utilities | Downtime during installation; integration risk | Line is sound but slow or labour-heavy |
| New line in existing plant | Step change in capacity; redundancy | Space, utilities and permits may limit | Demand is proven and space exists |
| New turnkey / EPC plant | Right-sized for future; new location | Highest CAPEX and lead time; contractor premium | Market, logistics or site make expansion impractical |
| Contract manufacturing / tolling | No CAPEX; tests demand | Margin sharing, IP and quality control risk | Demand uncertain or product is new |
Selection criteria
- Size of gap: measured shortfall in saleable units per year, not nameplate rate.
- Duration: how long demand is expected to exceed current capacity.
- Constraint type: equipment, labour, utilities, space or permits.
- Risk tolerance: downtime acceptable during installation and cash available.
- Ownership capacity: whether your team can manage interfaces (multi-contract) or needs a single contractor (turnkey/EPC).
Common mistakes
Buying a new line when changeovers are the constraint; underestimating utility upgrades; treating contract manufacturing as free; and comparing a turnkey quote with equipment-only quotes. Each makes options look cheaper or more expensive than they are.
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Frequently asked questions
- Is debottlenecking always cheaper than a new line?
- Often, but not always — once several steps are near their limit, piecemeal upgrades can cost more than a new line. Compare both with the same capacity target.
- When is turnkey better than multi-contract?
- When your team cannot own interfaces between equipment, utilities and civil works. Turnkey moves that risk to one contractor, usually at a price premium.
- Can I combine options?
- Yes. A common path is extra shifts now, debottlenecking next, and a new line once demand is proven.