Infrastructure investing means owning assets that provide essential services to society — toll roads, airports, ports, pipelines, electricity networks, water systems, and telecommunications towers. Infrastructure has distinctive return characteristics that make it attractive as a portfolio diversifier, particularly for long-term investors and retirees.
Why Infrastructure Is a Distinct Asset Class
Infrastructure assets share several features that distinguish them from ordinary shares:
Stable, regulated revenues: Toll roads charge tolls under long-term government contracts; electricity networks charge regulated tariffs; water utilities have captive customer bases. Revenue is more predictable than for commercial businesses.
Inflation linkage: Many infrastructure contracts include CPI escalation — tolls, utility tariffs, and airport charges are often indexed to inflation. This makes infrastructure a natural inflation hedge.
Low correlation with shares: Infrastructure revenue doesn’t depend on economic cycles the same way corporate earnings do — people drive on toll roads and use electricity regardless of share markets.
Long asset lives: Bridges, pipelines, and airports operate for decades. Long-dated cash flows suit long-term investors.
High capital requirements: Building infrastructure is expensive — creating natural barriers to competition. Once built, monopolistic assets earn stable returns with limited reinvestment needed.
Unlisted vs Listed Infrastructure
| Feature | Unlisted infrastructure | Listed infrastructure (ASX) |
|---|---|---|
| Valuation | Internal — appraised quarterly/annually | Daily market price |
| Volatility | Smoothed — low apparent volatility | Higher — trades with share market |
| Liquidity | Illiquid — locked up for years | High — sell same day |
| Access | Super funds, wholesale investors | Anyone with a brokerage account |
| Returns | Stable, long-term | More variable (includes market sentiment) |
Unlisted infrastructure is owned directly by large institutional investors and super funds — not publicly traded. The value is determined by independent valuations, not daily market pricing. This creates apparent low volatility — but also means the price may not reflect true market value.
How Retail Investors Access Unlisted Infrastructure
1. Through your superannuation fund
The most significant way ordinary Australians access unlisted infrastructure is through their super fund. Australia’s large industry super funds are among the world’s major infrastructure investors:
- AustralianSuper: Major owner of airport assets (Heathrow), toll roads, and utilities globally
- IFM Investors (owned by industry super funds): One of Australia’s largest infrastructure managers — owns Melbourne and Brisbane airports, Ausgrid (electricity network), Indiana Toll Road, and more
- Aware Super, Hostplus, CBUS: All maintain infrastructure allocations in their diversified portfolios
Members of these funds gain infrastructure exposure automatically through their super balance.
2. ASX-listed infrastructure companies
Several major Australian infrastructure companies list on the ASX — providing daily-liquid access with market-priced returns:
| Company | ASX code | Description |
|---|---|---|
| Transurban | TCL | Tollroad operator — CityLink, M5, M8, and US/Canadian toll roads |
| Atlas Arteria | ALX | Global toll roads — French and German motorways |
| APA Group | APA | Australian gas pipeline network |
| ATCO Australia (Canadian Utilities) | CU | Gas and electricity networks |
| Spark Infrastructure (now APA) | — | Acquired by APA Group |
| Sydney Airport (now delisted) | — | Privatised in 2022 |
These companies provide bond-like, predictable cash flows — and trade on the ASX with full liquidity.
3. Infrastructure ETFs
| ETF | Description | MER |
|---|---|---|
| GLIN | Global X Global Infrastructure ETF — global listed infrastructure companies (utilities, transport, energy) | 0.47% |
| VBLD | Vanguard Global Infrastructure Index ETF — global listed infrastructure | 0.47% |
| MICH | Macquarie Global Infrastructure Trust | varies |
These ETFs provide diversified global infrastructure exposure via listed companies — not unlisted assets. They trade daily on the ASX.
Key Risks
Listed infrastructure: Trades with share market sentiment — can fall sharply in market selloffs even if underlying revenue is unaffected.
Unlisted infrastructure: Illiquid and opaque. Values are based on internal appraisals — actual value may differ significantly from book value.
Regulatory risk: Infrastructure revenue often depends on government-set tariffs and contract terms. Regulatory decisions can reduce allowed returns.
Interest rate sensitivity: Infrastructure is often valued like a long-duration bond — its value falls when interest rates rise (as future cash flows are discounted at a higher rate). This was evident in 2022 when rising rates hit listed infrastructure prices.
Leverage: Many infrastructure assets carry significant debt to fund construction or acquisition — amplifying risk.
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Frequently Asked Questions
What is the difference between listed and unlisted infrastructure in Australia? Listed infrastructure (e.g., Transurban, APA Group, GLIN ETF) trades on the ASX — you can buy and sell daily. Unlisted infrastructure (e.g., Melbourne Airport, Ausgrid) is owned directly by super funds and institutional investors — valued periodically and not publicly traded. Industry super funds give ordinary Australians access to unlisted infrastructure through their member balances.
Is infrastructure a good investment in Australia? Infrastructure has historically delivered stable, inflation-linked returns with lower volatility than broad share markets — making it useful for diversification and income. Listed infrastructure is more volatile than unlisted (as it trades with share market sentiment), but is more accessible and liquid for retail investors. Past performance is not a reliable indicator of future performance.
Do Australian super funds invest in infrastructure? Yes — significantly. IFM Investors (owned by Australian industry super funds) is one of the world’s largest infrastructure managers. Industry super funds like AustralianSuper, Aware Super, and Hostplus hold unlisted infrastructure assets including airports, toll roads, electricity networks, and ports — both in Australia and globally.
This article provides general financial information only. For advice tailored to your situation, speak with a licensed financial adviser through the ASIC financial advisers register or MoneySmart.