A Realistic Timeline for a Greenfield Industrial Plant, Stage by Stage
A mid-sized greenfield industrial plant typically runs 14 to 26 months from concept to commissioning: 2 to 4 months of feasibility and cost modelling, 2 to 6 months of permitting (often in parallel), 2 to 3 months of structured procurement, 4 to 10 months of equipment manufacturing, 4 to 9 months of construction and installation overlapping delivery, and 1 to 3 months of commissioning and ramp-up. The stages that slip most are permitting and equipment manufacturing, and both are visible early enough to manage.
Stage durations
Durations below are indicative for a mid-sized industrial facility. Heavily regulated sectors, difficult sites and long-lead process equipment extend the range in predictable ways.
| Stage | Typical duration | Can run in parallel with | Main slip risk |
|---|---|---|---|
| Feasibility and cost model | 2–4 months | Site search | Capacity basis still moving |
| Site control and permits | 2–6 months | Procurement preparation | Environmental assessment scope |
| Structured procurement | 2–3 months | Permitting, financing screen | Unstructured RFQ causing re-bids |
| Financing | 1–12 months | Procurement | Documentation assembled too late |
| Equipment manufacturing | 4–10 months | Civil works | Supplier order book, long-lead components |
| Construction and installation | 4–9 months | Manufacturing tail | Utility connections |
| Commissioning and ramp-up | 1–3 months | Training | Raw material or utility instability |
What is actually on the critical path
On most industrial projects the critical path runs through the longest-lead process equipment and the utility connection — not through the building. Buyers frequently optimise the construction programme while the real constraint is a switchgear or compressor delivery quoted at 38 weeks.
Identify the three longest-lead items in the first month and order them against a defined scope as early as the financing structure allows. Everything else can usually be resequenced; those cannot.
- Ask every shortlisted supplier for a delivery slot commitment, not a lead-time estimate.
- Confirm utility connection capacity and timing in writing before fixing the plant layout.
- Order long-lead items on a separate package if the main award will be delayed.
Running procurement, permitting and financing in parallel
The single biggest schedule saving available to most sponsors is refusing to run these three sequentially. The same project data — capacity basis, technical scope, capex model — feeds all three, so preparing it once and using it three times removes months.
A structured RFQ is the practical mechanism: it produces the scope document the permitting authority wants, the priced quotations the lender wants, and the comparable bids procurement wants, from one exercise.
When the schedule slips, what recovers it
Recovery options degrade quickly with time, which is why early honesty about a slip is worth more than an optimistic status report.
- Early: resequence installation, split packages, or air-freight a single long-lead component.
- Middle: add a second installation crew, extend shifts, pre-assemble modules off site.
- Late: partial commissioning of one production line to start revenue while the rest completes.
- Always: update the lender before they read it in a covenant test.
Frequently asked questions
How long does a greenfield industrial plant take to build?
Typically 14 to 26 months from concept to commissioning for a mid-sized facility, with permitting and long-lead equipment manufacturing being the stages most likely to extend it.
Can procurement start before financing is approved?
Preparation and bidding can and generally should, so the priced quotations exist for the lender to review. Placing firm orders before financing is committed is a sponsor risk decision that should be taken explicitly, not by drift.
What are the usual long-lead items?
Process-critical machinery, electrical switchgear and transformers, large refrigeration and compression equipment, and specialised stainless fabrication. Confirm current lead times per project — they move with market conditions.
How much float should a greenfield programme carry?
Enough to absorb one long-lead delivery slipping — commonly six to ten weeks on a two-year programme — held centrally by the project manager rather than distributed into each activity, where it disappears.
Does an EPC contract shorten the timeline?
It can compress interfaces and shift coordination risk to a contractor, at a price. It rarely shortens equipment manufacturing or permitting, which are usually the binding constraints.
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