Power & Infrastructure · Transport Infrastructure
Transport Infrastructure Sector Primer
A 41-page primer plus Excel valuation model on toll road and airport concessions: the finite-life DCF, traffic, tariff escalators, RAB regulation and leverage.
2026 Edition · data as of July 2026
- pages
- 41
- sections
- 15
- model sheets
- 9
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The full primer
£25 / ~$32
- 41 pages, 15 sections
- Worked examples and applied cases
- 2026 Edition, data as of July 2026
Excel model
Valuation template
£45 / ~$58
- 9 sheets (.xlsx)
- Runs the primer's worked valuations live
PDF + Excel model Best value
Both files together
£59 / ~$76
- The 41-page primer
- The 9-sheet Excel model
- £70 bought separately · £11 less
Complete Power & Infrastructure Library
All three Power & Infrastructure industries: three primers, three Excel models (Regulated Utilities, Renewables & IPPs, and Transport Infrastructure).
Inside the primer
The 15-section contents, a worked valuation page, and the Excel dashboard.
Contents
- 01 How Concessions Make Money
- 02 Listed Concession Types
- 03 Concession Life: the Clock
- 04 Segments and Sub-Markets
- 05 Revenue Drivers: Generic Toll Build
- 06 Cost Structure: Margins and Leverage
- 07 Valuation Frameworks
- 08 Worked Examples: HarbourLink DCF and AeroGate RAB
- 09 Applied Cases: Demand-Risk Toll Roads
- 10 Applied Cases: Regulated Airports
- 11 Applied Cases: Mixed Groups and Mono-Asset
- 12 The Companies in This Primer
- 13 Key Metrics and Screening
- 14 Risks, Benchmarks and Case Study
- 15 Glossary and Cheat Sheet
Worked examples and applied cases · 41 pages · 15 sections · 2 worked examples
The Excel model
Educational material. This primer and its model are not investment advice or a recommendation to buy or sell any security, and they are not personalised. Worked valuations use illustrative calibrations, not fair-value estimates for any company.
A toll road or an airport concession is an asset with an end date. The operator collects tolls or charges until the concession expires and the asset returns to the state, so its value is the cash it earns between now and then and nothing after. That makes a finite-life discounted cash flow with no terminal value the right tool, and it makes a perpetual multiple, applied without the remaining life in view, the commonest way to overpay.
Toll road and airport valuation benchmarks by remuneration model
Who carries the traffic risk decides the method, and the method decides which multiple band applies. The primer treats EV/EBITDA as a screening cross-check only, read beside remaining life.
| Model | Primary method | EV/EBITDA cross-check | What sets the position |
|---|---|---|---|
| Demand-risk toll road | Finite-life DCF to expiry, zero terminal value | 12-16x | Remaining life, traffic growth against GDP, the escalator formula |
| Regulated airport | Regulatory asset base (RAB) × allowed WACC | 10-14x; about 1.0x RAB when earning exactly the allowed return | Traffic above the regulator's forecast, opex efficiency, commercial income outside the RAB |
| Mono-asset fixed link | Leg-by-leg DCF to one expiry | No separate band; state remaining life first | One horizon, a mixed tariff stack, no portfolio offset |
| Group with several concessions | Segment DCFs, then sum | A group multiple blends unlike durations | Segment margins and each asset's remaining life |
The primer's discount rate is an 8.21% nominal post-tax WACC: a 4.50% risk-free rate, a 5.50% equity risk premium, a 0.75 asset beta relevered at 40% gearing and a 6.00% pre-tax cost of debt. Net debt below 3x EBITDA is conservative and 3-5x normal; regulated airports usually carry 1.4-2.3x. Toll-road traffic defaults to growing in step with GDP, airport passengers at about 1.3 times income growth.
Worked example: a toll road valuation to expiry
Take a hypothetical urban toll road with 30 years left on its concession. Base EBITDA is A$500m at a 75% margin. Traffic grows 2.0% a year and tolls rise 2.5% with inflation, so revenue grows 4.55%. Cash tax at 25% and maintenance capex at 8% of EBITDA leave 67% of each year's EBITDA as free cash flow.
| Step | Amount |
|---|---|
| Base-year revenue (A$500m ÷ 75%) | A$667m |
| Year-1 revenue, grown 4.55% | A$697m |
| Year-1 EBITDA at 75% | A$523m |
| Year-1 after-tax FCF (67% of EBITDA) | A$350m |
| PV of 30 years of FCF at 8.21%, no terminal value | A$6,159m |
| Less net debt (4.0x base EBITDA) | -A$2,000m |
| Equity value | A$4,159m |
| Implied EV/EBITDA on base EBITDA | 12.3x |
A flat 13.0x on A$500m of EBITDA reads A$6,500m, 5.5% above the DCF, because a multiple assumes the cash keeps coming after year 30 and the deed says it stops. Life moves value more than the multiple admits. With 15 years left the same road's cash flows are worth A$3,857m before debt, and a one-point rise in the discount rate to 9.21% cuts equity to A$3,483m with net debt unchanged.
A regulated airport works the other way. A EUR6,000M asset base earning 7.5%, plus depreciation over 40 years, gives EBITDA of EUR600M, and an airport worth exactly its asset base then implies 10.0x, the floor of the regulated band. The primer shows the 30-year schedule, a life-by-rate grid and the airport build step by step. The Excel model runs both with your own concession.
Which toll road and airport valuation method fits which company
| Company type | Primary method | Check with | Why |
|---|---|---|---|
| Demand-risk toll road | Finite-life after-tax FCF DCF, zero terminal value | EV/EBITDA with remaining life stated | Volume times tariff, and the cash stops at expiry |
| Regulated airport | RAB × allowed WACC, or charge × passengers | Regulatory reset dates; EV/EBITDA cross-check | The regulator sets the return, not traffic |
| Mono-asset fixed link | Leg-by-leg FCF DCF to one expiry | Leverage on the filed EBITDA line | A single horizon and a mixed tariff stack |
| Conglomerate | Segment DCFs, then sum | Segment margin against group margin | A group multiple blends unlike durations |
What the full primer adds
The primer builds the tools in order: how concessions make money, the listed company types, concession life as the clock, then the toll build from traffic and tariff escalators and the cost side with margins and leverage. Two worked examples, a 30-year urban toll road on a finite-life DCF and a regulated airport on its regulatory asset base, run from first input to value. Applied cases on Transurban, Vinci, Ferrovial, Getlink, Aena and Auckland Airport come next, and screening closes with remaining life, margin, leverage and the EV/EBITDA shortcut set against the DCF.
Free guides on the site cover the individual pieces, so you can revise one idea without reopening the PDF: the finite-life concession DCF, concession life and the expiry cliff, concession life remaining by company, toll road traffic and GDP, toll escalators and inflation, airport RAB regulation and regulated airports vs demand-risk toll roads. Research profiles for Transurban, Vinci, Ferrovial, Getlink, Aena and Auckland Airport run the same screens on filed results. The companion Excel model spans nine sheets, from the concession DCF through the traffic and tariff build, the regulated-versus- demand-risk switch and the leverage screen to a live sensitivity grid, so swapping in your own concession rebuilds the valuation from its remaining life up.
Sheets: README, Assumptions, Concession DCF, Sensitivity, Traffic & Tariff, Regulated vs Demand-Risk, Leverage, Multiples Cross-Check, Dashboard.
Toll road and airport valuation: free guides
Toll road and airport valuation FAQ
- How do you value a toll road?
- Discount after-tax free cash flow to the date the concession expires, and stop there. There is no terminal value, because the road reverts to the state with no payment. The primer discounts at an 8.21% nominal post-tax cost of capital built from an asset beta, and treats EV/EBITDA as a cross-check only once remaining life is stated.
- Why is there no terminal value in a concession DCF?
- A concession is a time-limited right. At expiry the asset hands back to the grantor, so a perpetuity-growth terminal value would count years the operator does not own. If a model needs a terminal value to work, it is valuing a different asset.
- What EV/EBITDA multiple do toll roads and airports trade on?
- The primer's screening bands are 12-16x for demand-risk toll roads and 10-14x for regulated or availability assets. Neither band means much without remaining life: the same cash flows over 60 years support a far higher multiple than over 10. On the primer's 30-year worked example the DCF implies 12.3x, and a flat 13.0x overstates value by 5.5%.
- How are regulated airports valued?
- On the regulatory asset base (RAB). The regulator allows a return on the RAB plus depreciation, so an airport earning exactly its allowed return is worth about 1.0x its RAB. The market pays more when the operator beats the determination: traffic above forecast, opex savings kept until the next reset, and commercial income the regulator does not cap.
- What discount rate should be used for an infrastructure concession?
- An asset cost of capital, never the government bond yield. The primer builds 8.21% nominal post-tax from a 4.50% risk-free rate, a 5.50% equity risk premium, a 0.75 asset beta at 40% gearing and a 6.00% pre-tax cost of debt. At the 4.50% bond yield the rate would sit below the model's own 4.55% growth, so each year would be worth more than the one before.
See this methodology applied to a real company:
Transurban (TCL) →