Understanding capital project development terms
Understanding capital project development terms
Our glossary is your go-to resource with plain definitions of the terms process engineers, estimators, and capital planners use to evaluate industrial capital projects.
Feasibility & techno-economic analysis
Feasibility & techno-economic analysis
Techno-economic analysis
Techno-economic analysis
TEA
TEA
A techno-economic analysis is a study that combines the engineering design of a process with its costs and financial outcomes to determine whether a project is worth building.
A techno-economic analysis is a study that combines the engineering design of a process with its costs and financial outcomes to determine whether a project is worth building.
A TEA links the physical process (what equipment is needed, how much material and energy it consumes) to the economics (what it costs to build, what it costs to operate, and what it produces). It answers the core early-stage question: does this make money, and under what conditions? At feasibility stage, the answer depends heavily on assumptions that are still uncertain, which is why a TEA built on a single scenario can create false confidence.
A TEA links the physical process (what equipment is needed, how much material and energy it consumes) to the economics (what it costs to build, what it costs to operate, and what it produces). It answers the core early-stage question: does this make money, and under what conditions? At feasibility stage, the answer depends heavily on assumptions that are still uncertain, which is why a TEA built on a single scenario can create false confidence.
Also called:
technical economic analysis, techno-economic model, feasibility model
technical economic analysis, techno-economic model, feasibility model
Feasibility study
Feasibility study
A feasibility study evaluates whether a proposed industrial project is technically possible and economically viable before significant capital is committed.
A feasibility study evaluates whether a proposed industrial project is technically possible and economically viable before significant capital is committed.
It typically covers the process design basis, a capital cost estimate, an operating cost estimate, and a financial outcome. Early feasibility work carries a high number of open questions and unproven assumptions, so the value of the study comes less from a single answer and more from understanding which decisions and inputs drive the outcome.
It typically covers the process design basis, a capital cost estimate, an operating cost estimate, and a financial outcome. Early feasibility work carries a high number of open questions and unproven assumptions, so the value of the study comes less from a single answer and more from understanding which decisions and inputs drive the outcome.
Front-End Loading
Front-End Loading
FEL
FEL
Front-End Loading is the staged process of defining and de-risking a capital project before the decision to build, usually structured as FEL-0 through FEL-3.
Front-End Loading is the staged process of defining and de-risking a capital project before the decision to build, usually structured as FEL-0 through FEL-3.
Each stage adds engineering definition and narrows cost uncertainty. FEL-0 and FEL-1 are concept and feasibility (broad ranges, many open decisions); FEL-2 is preliminary design; FEL-3 is detailed enough to support a final investment decision. A large share of FEL packages never advance, which is why getting the early stages right with a stronger design basis matters before thousands of engineering hours are spent.
Each stage adds engineering definition and narrows cost uncertainty. FEL-0 and FEL-1 are concept and feasibility (broad ranges, many open decisions); FEL-2 is preliminary design; FEL-3 is detailed enough to support a final investment decision. A large share of FEL packages never advance, which is why getting the early stages right with a stronger design basis matters before thousands of engineering hours are spent.
Also called:
stage-gate process, front-end engineering, FEL stages
stage-gate process, front-end engineering, FEL stages
Design basis
Design basis
A design basis is the set of assumptions, requirements, and constraints that a process and facility design is built around.
A design basis is the set of assumptions, requirements, and constraints that a process and facility design is built around.
It includes target production capacity, feedstocks, product specifications, site conditions, and key process parameters. A weak or premature design basis is a common cause of projects that get poorly scoped early and then run over budget or schedule once built.
It includes target production capacity, feedstocks, product specifications, site conditions, and key process parameters. A weak or premature design basis is a common cause of projects that get poorly scoped early and then run over budget or schedule once built.
Scale-up
Scale-up
Scale-up is the process of taking a design proven at pilot or lab scale and engineering it for commercial production volumes.
Scale-up is the process of taking a design proven at pilot or lab scale and engineering it for commercial production volumes.
Costs and equipment do not scale linearly. The same unit operations may apply, but sizing, pricing, utility demand, and real estate change substantially between a pilot plant and a full commercial facility. Modeling each scale separately is how teams understand where the economics break.
Costs and equipment do not scale linearly. The same unit operations may apply, but sizing, pricing, utility demand, and real estate change substantially between a pilot plant and a full commercial facility. Modeling each scale separately is how teams understand where the economics break.
Also called:
pilot to commercial, commercialization
pilot to commercial, commercialization
Process engineering
Process engineering
Process simulation
Process simulation
Process simulation uses software to model how a chemical or industrial process behaves, calculating the flows, temperatures, pressures, and conversions at each step.
Process simulation uses software to model how a chemical or industrial process behaves, calculating the flows, temperatures, pressures, and conversions at each step.
Simulation establishes the physical reality of a process before any equipment is sized or costed. Traditional simulators are built for detailed process design and rigorous thermodynamics, which requires a level of process definition that early feasibility work does not yet have.
Simulation establishes the physical reality of a process before any equipment is sized or costed. Traditional simulators are built for detailed process design and rigorous thermodynamics, which requires a level of process definition that early feasibility work does not yet have.
Also called:
process modeling, flowsheet simulation
process modeling, flowsheet simulation
Heat and material balance
Heat and material balance
H&MB
H&MB
A heat and material balance is an accounting of all mass and energy entering and leaving each step of a process, confirming that nothing is created or destroyed.
A heat and material balance is an accounting of all mass and energy entering and leaving each step of a process, confirming that nothing is created or destroyed.
It is the foundation of any credible process model. The mass and energy balance determines how much raw material and utility each piece of equipment consumes, which in turn drives both operating cost and equipment sizing. In a spreadsheet, mass does not have to balance, which makes errors easy to introduce and hard to find.
It is the foundation of any credible process model. The mass and energy balance determines how much raw material and utility each piece of equipment consumes, which in turn drives both operating cost and equipment sizing. In a spreadsheet, mass does not have to balance, which makes errors easy to introduce and hard to find.
Also called:
mass and energy balance, mass balance, H&MB
mass and energy balance, mass balance, H&MB
Unit operation
Unit operation
A unit operation is a single distinct step in a process, such as fermentation, distillation, centrifugation, or filtration.
A unit operation is a single distinct step in a process, such as fermentation, distillation, centrifugation, or filtration.
Industrial processes are built by connecting unit operations into a sequence. Each unit operation represents both a physical transformation and a physical piece of equipment, which is what links the process model to the equipment list and the capital cost estimate.
Industrial processes are built by connecting unit operations into a sequence. Each unit operation represents both a physical transformation and a physical piece of equipment, which is what links the process model to the equipment list and the capital cost estimate.
Process Flow Diagram
Process Flow Diagram
PFD
PFD
A Process Flow Diagram is a schematic showing the major equipment, flow paths, and operating conditions of a process.
A Process Flow Diagram is a schematic showing the major equipment, flow paths, and operating conditions of a process.
A PFD communicates how a process works at a level appropriate for feasibility and conceptual engineering. It is less detailed than a Piping and Instrumentation Diagram (P&ID), which adds the instrumentation and control detail needed for detailed design and construction.
A PFD communicates how a process works at a level appropriate for feasibility and conceptual engineering. It is less detailed than a Piping and Instrumentation Diagram (P&ID), which adds the instrumentation and control detail needed for detailed design and construction.
Also called:
flow sheet, BFD (block flow diagram)
flow sheet, BFD (block flow diagram)
Equipment sizing
Equipment sizing
Equipment sizing is the calculation of the required capacity of each piece of equipment based on the process flows it must handle.
Equipment sizing is the calculation of the required capacity of each piece of equipment based on the process flows it must handle.
Sizing flows directly from the heat and material balance. Realistic sizing matters because equipment has real capacity limits. A chiller or vessel specified beyond what is commercially manufactured produces a cost estimate that cannot be built, and undersized utilities get missed entirely.
Sizing flows directly from the heat and material balance. Realistic sizing matters because equipment has real capacity limits. A chiller or vessel specified beyond what is commercially manufactured produces a cost estimate that cannot be built, and undersized utilities get missed entirely.
Capital & cost estimation
Capital & cost estimation
Capital expenditure
Capital expenditure
CAPEX
CAPEX
CAPEX is the total cost to build a facility, including equipment, installation, construction, and the indirect costs of engineering and project management.
CAPEX is the total cost to build a facility, including equipment, installation, construction, and the indirect costs of engineering and project management.
In a feasibility model, CAPEX is built up from a sized and priced equipment list, then expanded with factors that account for everything required to turn loose equipment into an operating facility. It is one of the two cost numbers, alongside operating cost, that determine whether a project is viable.
In a feasibility model, CAPEX is built up from a sized and priced equipment list, then expanded with factors that account for everything required to turn loose equipment into an operating facility. It is one of the two cost numbers, alongside operating cost, that determine whether a project is viable.
Total Installed Cost
Total Installed Cost
TIC
TIC
Total Installed Cost is the full cost of equipment plus everything needed to install and connect it into a working facility.
Total Installed Cost is the full cost of equipment plus everything needed to install and connect it into a working facility.
TIC starts with the bare equipment cost and adds piping, instrumentation, electrical, foundations, buildings, and construction. It is the difference between what equipment costs to purchase and what it costs to actually put into the ground and operate.
TIC starts with the bare equipment cost and adds piping, instrumentation, electrical, foundations, buildings, and construction. It is the difference between what equipment costs to purchase and what it costs to actually put into the ground and operate.
Also called:
total installed capital cost, installed cost
total installed capital cost, installed cost
Bare equipment cost
Bare equipment cost
Bare equipment cost is the purchase price of all major equipment in a process, before any installation or construction costs are added.
Bare equipment cost is the purchase price of all major equipment in a process, before any installation or construction costs are added.
It is the sum of the sized and priced equipment list and serves as the starting point for a factored capital estimate. Bare equipment cost typically represents only a fraction of the total installed cost of a facility.
It is the sum of the sized and priced equipment list and serves as the starting point for a factored capital estimate. Bare equipment cost typically represents only a fraction of the total installed cost of a facility.
Also called:
purchased equipment cost
purchased equipment cost
Factored cost estimate
Factored cost estimate
A factored cost estimate builds up total capital cost by applying multipliers to the bare equipment cost to account for installation, piping, electrical, construction, and indirects.
A factored cost estimate builds up total capital cost by applying multipliers to the bare equipment cost to account for installation, piping, electrical, construction, and indirects.
This method is standard for early-stage estimating because it produces a credible total capital number quickly, without needing detailed quotes for every line item. The accuracy depends on the quality of the equipment costs and the factors applied.
This method is standard for early-stage estimating because it produces a credible total capital number quickly, without needing detailed quotes for every line item. The accuracy depends on the quality of the equipment costs and the factors applied.
Also called:
equipment-factored estimate
equipment-factored estimate
Class 4 / Level 4 estimate
Class 4 / Level 4 estimate
A Class 4 estimate is a capital cost estimate produced at the feasibility or concept stage, with an accuracy range typically between minus 30 and plus 50 percent.
A Class 4 estimate is a capital cost estimate produced at the feasibility or concept stage, with an accuracy range typically between minus 30 and plus 50 percent.
It is appropriate when process definition is still low and many decisions remain open. The point of a feasibility-stage estimate is not precision; it is to understand the order of magnitude, the major cost drivers, and how sensitive the project is to its assumptions.
It is appropriate when process definition is still low and many decisions remain open. The point of a feasibility-stage estimate is not precision; it is to understand the order of magnitude, the major cost drivers, and how sensitive the project is to its assumptions.
Also called:
Level 4 estimate, feasibility estimate, AACE Class 4
Level 4 estimate, feasibility estimate, AACE Class 4
Indirect costs
Indirect costs
Indirect costs are project costs not tied to a specific piece of equipment, such as engineering, procurement, construction management, and contingency.
Indirect costs are project costs not tied to a specific piece of equipment, such as engineering, procurement, construction management, and contingency.
They are added on top of direct costs in a capital estimate and can represent a substantial share of total installed cost. Underestimating indirects is a frequent contributor to capital overruns.
They are added on top of direct costs in a capital estimate and can represent a substantial share of total installed cost. Underestimating indirects is a frequent contributor to capital overruns.
Location factor
Location factor
A location factor adjusts a capital cost estimate to reflect the labor, material, and construction costs of a specific country or region.
A location factor adjusts a capital cost estimate to reflect the labor, material, and construction costs of a specific country or region.
The same facility costs different amounts to build in the US, Europe, Asia, or Latin America. Location factors, along with regional utility and raw material costs, let teams compare the economics of building in different places.
The same facility costs different amounts to build in the US, Europe, Asia, or Latin America. Location factors, along with regional utility and raw material costs, let teams compare the economics of building in different places.
Operating & financial modeling
Operating & financial modeling
Operating expenditure
Operating expenditure
OPEX
OPEX
OPEX is the recurring cost of running a facility, including raw materials, utilities, labor, maintenance, and overhead.
OPEX is the recurring cost of running a facility, including raw materials, utilities, labor, maintenance, and overhead.
Operating cost is derived directly from the process model: the mass and energy balance determines consumption of feedstocks and utilities, and the facility design determines labor and fixed costs. Together with CAPEX, it sets the full economics of production.
Operating cost is derived directly from the process model: the mass and energy balance determines consumption of feedstocks and utilities, and the facility design determines labor and fixed costs. Together with CAPEX, it sets the full economics of production.
Cost of Goods Sold
Cost of Goods Sold
COGS
COGS
Cost of Goods Sold is the total cost to produce one unit of product, usually expressed as dollars per kilogram or per ton.
Cost of Goods Sold is the total cost to produce one unit of product, usually expressed as dollars per kilogram or per ton.
COGS combines variable costs (raw materials, utilities, consumables) and an allocation of fixed costs (labor, maintenance, depreciation). It is the number that determines what price hits a target margin, and the threshold that yield, titer, and throughput improvements are measured against.
COGS combines variable costs (raw materials, utilities, consumables) and an allocation of fixed costs (labor, maintenance, depreciation). It is the number that determines what price hits a target margin, and the threshold that yield, titer, and throughput improvements are measured against.
Also called:
cost of manufacture, unit production cost, cost per kg
cost of manufacture, unit production cost, cost per kg
Fixed vs. variable costs
Fixed vs. variable costs
Variable costs change with production volume; fixed costs do not.
Variable costs change with production volume; fixed costs do not.
Raw materials and utilities are variable: produce more, spend more. Labor, maintenance, real estate, and SG&A are largely fixed: they are incurred regardless of output. Separating the two is what lets a model show how unit economics change as a facility scales up or down.
Raw materials and utilities are variable: produce more, spend more. Labor, maintenance, real estate, and SG&A are largely fixed: they are incurred regardless of output. Separating the two is what lets a model show how unit economics change as a facility scales up or down.
Financial model
Financial model
A financial model translates a project's capital and operating costs into financial outcomes such as cash flow, returns, and break-even.
A financial model translates a project's capital and operating costs into financial outcomes such as cash flow, returns, and break-even.
It layers in financing structure (the mix of debt and equity), revenue, and time to produce the numbers an investment decision rests on. In an integrated model, the financial outputs are a direct, traceable consequence of the process and cost assumptions rather than a separate spreadsheet that has to be manually reconciled.
It layers in financing structure (the mix of debt and equity), revenue, and time to produce the numbers an investment decision rests on. In an integrated model, the financial outputs are a direct, traceable consequence of the process and cost assumptions rather than a separate spreadsheet that has to be manually reconciled.
Debt and equity financing
Debt and equity financing
Debt and equity financing is the mix of borrowed money and invested capital used to fund a project, which directly affects its returns.
Debt and equity financing is the mix of borrowed money and invested capital used to fund a project, which directly affects its returns.
The financing structure changes the fully-loaded cost of production and the return on capital, independent of the engineering. Being able to test different structures against the same process model is part of underwriting whether a project is fundable.
The financing structure changes the fully-loaded cost of production and the return on capital, independent of the engineering. Being able to test different structures against the same process model is part of underwriting whether a project is fundable.
Also called:
capital structure, financing structure
capital structure, financing structure
Life Cycle Assessment
Life Cycle Assessment
LCA
LCA
A Life Cycle Assessment quantifies the environmental impact of producing something, most often its carbon footprint.
A Life Cycle Assessment quantifies the environmental impact of producing something, most often its carbon footprint.
When the carbon model is connected to the process model, the product carbon footprint updates alongside cost as the design changes, allowing CAPEX, OPEX, and carbon to be traded off against each other rather than analyzed separately.
When the carbon model is connected to the process model, the product carbon footprint updates alongside cost as the design changes, allowing CAPEX, OPEX, and carbon to be traded off against each other rather than analyzed separately.
Also called:
product carbon footprint, PCF, CI score
product carbon footprint, PCF, CI score
Scenario & risk analysis
Scenario & risk analysis
Scenario analysis
Scenario analysis
Scenario analysis compares a project under different defined sets of assumptions, such as a downside, baseline, and upside case.
Scenario analysis compares a project under different defined sets of assumptions, such as a downside, baseline, and upside case.
Each scenario can vary the inputs that matter for a given decision while holding the rest constant. Scenarios do not have to be downside, baseline, and upside; they can represent different sites, scales, process routes, or operating conditions. The purpose is to avoid deciding on a single set of assumptions that will not hold.
Each scenario can vary the inputs that matter for a given decision while holding the rest constant. Scenarios do not have to be downside, baseline, and upside; they can represent different sites, scales, process routes, or operating conditions. The purpose is to avoid deciding on a single set of assumptions that will not hold.
Sensitivity analysis
Sensitivity analysis
Sensitivity analysis measures how much a project's outcome changes when each input is varied, to identify which assumptions matter most.
Sensitivity analysis measures how much a project's outcome changes when each input is varied, to identify which assumptions matter most.
By sweeping inputs across their plausible ranges, it separates the variables that move the economics from the ones that do not. This is what lets a team focus effort on the few high-impact, high-uncertainty inputs instead of refining numbers that have no bearing on the decision.
By sweeping inputs across their plausible ranges, it separates the variables that move the economics from the ones that do not. This is what lets a team focus effort on the few high-impact, high-uncertainty inputs instead of refining numbers that have no bearing on the decision.
Uncertainty analysis
Uncertainty analysis
Uncertainty analysis assigns ranges or probability distributions to inputs and propagates that uncertainty through the model to show a range of possible outcomes.
Uncertainty analysis assigns ranges or probability distributions to inputs and propagates that uncertainty through the model to show a range of possible outcomes.
It differs from scenario analysis: scenarios are discrete defined cases, while uncertainty analysis quantifies the spread of results given how confident you are in each input. Inputs known from a recent quote carry tight bounds; inputs estimated without a good reference carry wide ones.
It differs from scenario analysis: scenarios are discrete defined cases, while uncertainty analysis quantifies the spread of results given how confident you are in each input. Inputs known from a recent quote carry tight bounds; inputs estimated without a good reference carry wide ones.
Also called:
uncertainty quantification, uncertainty bounds
uncertainty quantification, uncertainty bounds
Monte Carlo simulation
Monte Carlo simulation
Monte Carlo simulation runs a model many times with inputs drawn at random from their probability distributions, producing a statistical range of outcomes.
Monte Carlo simulation runs a model many times with inputs drawn at random from their probability distributions, producing a statistical range of outcomes.
Rather than a single answer, it gives a distribution: the likelihood that a project lands within a given cost or margin range. It requires defining inputs as distributions rather than single values, which is how teams move from a point estimate to a quantified view of risk.
Rather than a single answer, it gives a distribution: the likelihood that a project lands within a given cost or margin range. It requires defining inputs as distributions rather than single values, which is how teams move from a point estimate to a quantified view of risk.
Tornado diagram
Tornado diagram
A tornado diagram is a chart that ranks inputs by how much each one affects the outcome, with the most influential variables shown at the top.
A tornado diagram is a chart that ranks inputs by how much each one affects the outcome, with the most influential variables shown at the top.
It is a standard output of sensitivity and uncertainty analysis. The shape makes it immediately clear which two or three assumptions drive most of the risk in a project, and which ones can be safely left as rough estimates.
It is a standard output of sensitivity and uncertainty analysis. The shape makes it immediately clear which two or three assumptions drive most of the risk in a project, and which ones can be safely left as rough estimates.
Greenfield vs. brownfield
Greenfield vs. brownfield
A greenfield project builds a new facility from scratch; a brownfield project modifies or expands existing infrastructure.
A greenfield project builds a new facility from scratch; a brownfield project modifies or expands existing infrastructure.
The distinction changes the cost model significantly. A brownfield estimate zeroes out equipment and infrastructure that already exists, while a greenfield estimate prices the entire facility. Modeling both is common when a team is deciding whether to retrofit or build new.
The distinction changes the cost model significantly. A brownfield estimate zeroes out equipment and infrastructure that already exists, while a greenfield estimate prices the entire facility. Modeling both is common when a team is deciding whether to retrofit or build new.
Designed for those who build.
Roebling is where the most ambitious industrial projects start. Roebling offers a first-of-its-kind platform for industrial process engineers and R&D teams in biomanufacturing, chemicals, critical minerals, and beyond.
Industries
Designed for those who build.
Roebling is where the most ambitious industrial projects start. Roebling offers a first-of-its-kind platform for industrial process engineers and R&D teams in biomanufacturing, chemicals, critical minerals, and beyond.
Industries
Designed for those who build.
Roebling is where the most ambitious industrial projects start. Roebling offers a first-of-its-kind platform for industrial process engineers and R&D teams in biomanufacturing, chemicals, critical minerals, and beyond.
Industries
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