# Capital Investment

## What does the capital investment estimate include? {#what-does-the-capital-investment-estimate-include}

!!! Summary
[Capital investment](../glossary/a-c.md#capital-investment) is the total funding a project needs to build a plant and bring it into operation. It has three parts: fixed capital, working capital, and additional capital requirements.
!!!

The [capital investment](../glossary/a-c.md#capital-investment) in a Commodity Production Costs report is the total funding required to build the plant and get it running. It is estimated in three parts:

| Component | What it covers |
|---|---|
| [Fixed capital](../glossary/d-g.md#fixed-capital) | The depreciable investment in the plant itself — its [plant cost](../glossary/p-r.md#plant-cost) plus the [owner's cost](../glossary/m-o.md#owner-s-cost) of making it operational. |
| [Working capital](../glossary/s-w.md#working-capital) | The funds, beyond fixed capital, needed to keep the plant running day to day once it has started up. |
| [Additional capital requirements](../glossary/a-c.md#additional-capital-requirements) | One-time start-up expenses incurred between the end of construction and stable, on-specification operation. |

Fixed capital is itself the sum of plant cost and owner's cost, and is the portion of the investment that is depreciated over the plant's life. Each of the three components is estimated separately and detailed in the questions below.

## How is the plant cost estimated? {#how-is-the-plant-cost-estimated}

!!! Summary
Plant cost is the estimated cost of building the plant — the largest part of fixed capital. It is the sum of four elements: ISBL investment, process contingency, OSBL investment, and project contingency.
!!!

The [plant cost](../glossary/p-r.md#plant-cost) is the estimated cost of constructing the plant, and the largest part of [fixed capital](../glossary/d-g.md#fixed-capital). It is built up from four elements:

| Element | What it represents |
|---|---|
| [ISBL investment](../glossary/h-l.md#isbl-inside-battery-limits) | Construction of all the process areas shown in the block flow diagram — the plant's core production units. |
| Process contingency | A buffer for technical information that is absent or uncertain. |
| [OSBL investment](../glossary/m-o.md#osbl-outside-battery-limits) | Construction of the supporting infrastructure outside the process areas. |
| Project contingency | A buffer for the cost changes a project accumulates as it evolves. |

The ISBL and OSBL investments are estimated with Intratec preliminary cost models; the two contingencies are then added as percentage factors driven by the technology's maturity. How the cost models work is covered in [How are the capital cost models built?](#how-are-the-capital-cost-models-built), and the two contingency factors are set out under [Contingencies](#what-is-process-contingency-and-how-is-it-set).

## How are the capital cost models built? {#how-are-the-capital-cost-models-built}

!!! Summary
The process and infrastructure investments are estimated with Intratec preliminary cost models — founded on established cost-estimating methods and the statistical processing of a large body of actual cost data, applied unit by unit.
!!!

The [ISBL](../glossary/h-l.md#isbl-inside-battery-limits) and [OSBL](../glossary/m-o.md#osbl-outside-battery-limits) investments are estimated with Intratec preliminary cost models, applied to each functional unit of the plant. The models are founded on a number of established cost-estimating methods and rest on the mathematical and statistical processing of an extensive volume of actual cost data. For a given unit, the model output already includes the direct materials and labor of construction together with the construction indirect costs — not only the [bare equipment](../glossary/a-c.md#bare-equipment-beq).

When a unit falls outside the range the cost models cover — a nonstandard or unusual piece of equipment — its cost is estimated instead from engineering design software or from supplier quotations.

Because they work from preliminary information and a conceptual process design, the models produce a benchmark-grade estimate rather than a detailed engineering quotation.

## How are construction costs broken down? {#how-are-construction-costs-broken-down}

!!! Summary
The plant cost is reported two ways. Alongside the ISBL/OSBL split, it is also given per discipline — grouping the construction into direct process costs, indirect costs, and project contingency.
!!!

The plant cost is presented in two complementary ways. Alongside the [ISBL and OSBL](../glossary/h-l.md#isbl-inside-battery-limits) split, it is also given as a [breakdown per discipline](../glossary/p-r.md#plant-cost-breakdown-per-discipline) — the same total cost rearranged by the type of construction work involved. This discipline view has three groups:

- **Direct process costs** — [bare equipment](../glossary/a-c.md#bare-equipment-beq), equipment setting, piping, civil work, steel, instrumentation and control, electrical, insulation, and painting.
- **Indirect costs** — engineering and procurement, construction materials and indirects, general and administrative overheads, and the contract fee.
- **[Project contingency](../glossary/p-r.md#project-contingency)** — the same project-evolution buffer, added to the discipline total.

Both breakdowns — by battery-limits area and by discipline — appear in the report, in the plant-cost breakdown appendix, so plant cost can be examined from either angle.

## Contingencies {#contingencies}

### What is process contingency, and how is it set? {#what-is-process-contingency-and-how-is-it-set}

!!! Summary
Process contingency is a buffer added to ISBL investment for technical information that is missing or uncertain. It typically runs 5–30% of ISBL investment, set by the technology's maturity and the information available about it.
!!!

[Process contingency](../glossary/p-r.md#process-contingency) covers the risk that the technical information behind an estimate is absent or uncertain — the less that is known about a process, the larger the buffer. It is added to the [ISBL investment](../glossary/h-l.md#isbl-inside-battery-limits) and typically falls between 5% and 30% of it.

The exact factor is set by two things: how mature the production technology is, and how much information is available about it. The table below gives the factor as a percentage of ISBL investment, by technology maturity (rows) and information availability (columns):

{.compact}
| Technology maturity | Low | Average | High |
|---|---|---|---|
| Established (Outdated) | 15% | 10% | 5% |
| Established (In Use) | 15% | 10% | 5% |
| Emerging | 18% | 15% | — |
| Embryonic | 22% | — | — |
| Conceptual | 26% | — | — |

!!!secondary
A blank cell marks a combination that does not occur. Limited information is inherent to the least-mature technologies, so average- or high-information estimates are not available for them.
!!!

The five technology-maturity levels are defined in the [analysis methodology](../commodity-production-costs/analysis-methodology.md).

### What is project contingency, and how is it set? {#what-is-project-contingency-and-how-is-it-set}

!!! Summary
Project contingency covers the cost changes a project accumulates as it evolves — estimating errors, incomplete specifications, labor and weather disruptions, inflation. It is a percentage of total process capital, set by technology maturity and plant complexity.
!!!

[Project contingency](../glossary/p-r.md#project-contingency) accounts for the additional costs a project tends to accumulate as it develops: estimating errors, incomplete specifications, changes in labor cost, strikes, adverse weather, and inflation. It is applied to the total process capital.

The factor is set by two things: how mature the production technology is, and how complex the plant is. The table below gives it as a percentage of total process capital, by technology maturity (rows) and plant complexity (columns):

{.compact}
| Technology maturity | Low | Average | High |
|---|---|---|---|
| Established (Outdated) | 15% | 20% | 25% |
| Established (In Use) | 15% | 20% | 25% |
| Emerging | 20% | 25% | 30% |
| Embryonic | 25% | 30% | 35% |
| Conceptual | 30% | 35% | 40% |

The five technology-maturity levels are defined in the [analysis methodology](../commodity-production-costs/analysis-methodology.md).

## What is included in the owner's cost? {#what-is-included-in-the-owner-s-cost}

!!! Summary
Owner's cost covers the expenses needed to make a built plant operational, though not the construction itself: the initial charge of chemicals and catalysts, prepaid royalties, and miscellaneous costs.
!!!

The [owner's cost](../glossary/m-o.md#owner-s-cost) covers expenses required to make the plant operational but not part of building it. Together with the [plant cost](../glossary/p-r.md#plant-cost), it makes up [fixed capital](../glossary/d-g.md#fixed-capital). It has three components:

- **Initial charge of chemicals and catalysts** — the first fill of a chemical or catalyst, counted here only when that inventory lasts more than a year and is a significant expense; shorter-lived inventories are treated as [working capital](../glossary/s-w.md#working-capital) instead.
- **Prepaid royalties** — royalty charges levied on proprietary portions of the plant, generally 0.5–1% of plant cost.
- **Miscellaneous costs** — generally 5–10% of plant cost, covering preliminary planning, HAZOP and environmental studies; legal costs, rights of way, permits and fees; long-distance pipelines, transport equipment and plant vehicles; the initial stock of maintenance materials; owner's engineering; and owner's contingency.

## How is working capital estimated? {#how-is-working-capital-estimated}

!!! Summary
Working capital is the funding, beyond fixed capital, that keeps the plant operating once it starts up. It is built from seven items, each estimated from a defined cost basis — six added and one, accounts payable, subtracted as a credit.
!!!

[Working capital](../glossary/s-w.md#working-capital) is the funding a project needs beyond [fixed capital](../glossary/d-g.md#fixed-capital) to get the plant into operation and meet its running obligations. It is estimated as the net of seven items, each tied to a defined cost basis:

{.compact}
| Item | Basis |
|---|---|
| Accounts receivable | A number of days of total operating cost plus corporate overhead — the credit extended to customers. |
| Accounts payable | A credit, subtracted: a number of days of operating [cash cost](../glossary/a-c.md#cash-cost) plus corporate overhead received from suppliers. |
| Product inventory | A number of days of total operating cost plus corporate overhead. |
| Raw material inventory | A number of days of delivered raw-material cost. |
| In-process inventory | One day of cash cost plus corporate overhead — material held in pipelines and vessels. |
| Supplies and stores | A percentage of operating labor, supervision, and maintenance cost. |
| Cash on hand | A number of days of cash cost plus corporate overhead. |

Accounts payable is the one item entered as a credit, reducing the total; the other six add to it.

## What are the additional capital requirements? {#what-are-the-additional-capital-requirements}

!!! Summary
Additional capital requirements are the one-time expenses of starting the plant up — the period between the end of construction and stable, on-specification operation. They cover labor training, commercialization, start-up inefficiency, unscheduled modifications, and land and site development.
!!!

[Additional capital requirements](../glossary/a-c.md#additional-capital-requirements) are the one-time expenses of bringing the plant on stream during start-up — the period between the nominal end of construction and correct operation, when the plant makes quality product in the required quantity. They comprise:

- **Labor training** — training the plant crew for start-up, based on a number of days of total plant labor cost.
- **Commercialization costs** — marketing the product, building a distribution network, and setting up customer support; generally 0.5–5% of annual [cash cost](../glossary/a-c.md#cash-cost).
- **Start-up inefficiency** — an allowance for false starts and runs that cannot yet be sustained; 1% of annual cash cost for established processes, rising to 5% for [less mature technologies](../commodity-production-costs/analysis-methodology.md).
- **Unscheduled plant modifications** — equipment changes or additions needed if the product does not initially meet market specifications.
- **Land and site development** — site preparation such as roads, parking, railroad sidings, lighting, fencing, sewers, and communications.

## How are capital estimates validated? {#how-are-capital-estimates-validated}

!!! Summary
Fixed-capital estimates are validated with three independent cross-checks — published investment data, similar plants, and reverse engineering from known profitability — before a report is finalized.
!!!

[Fixed-capital](../glossary/d-g.md#fixed-capital) estimates are cross-checked against independent references before a report is finalized. Three double-checks are applied:

1. **Published investment data** — actual investment figures for comparable projects, adjusted for differences in time, location, and capacity.
2. **Similar plants** — the fixed capital of plants of a similar nature.
3. **Reverse engineering** — working back from the known profitability of a process to the investment it implies.

Together these confirm the estimate sits in a realistic range. How close an estimate is expected to come to an actual figure — the accuracy ranges by technology maturity and information availability — is covered in [Accuracy and Limitations](../commodity-production-costs/accuracy-and-limitations.md).