Pension fund investment in infrastructure
A relatively "new" asset class
Although traditionally the preserve of governments and municipal authorities, infrastructure has recently become an asset class in its own right for private sector investors- most notably pension funds 
Historically, pension funds have tended to invest mostly in “core-assets’’ such as money market instruments, government bonds, and large-cap equity, and, to a lesser extent, in “alternative assets” such as real estate, private equity and hedge funds, the average allocation to infrastructure representing only 1% of total assets under management by pensions- excluding indirect investment through ownership of stocks of listed utility and infrastructure companies.
But government disengagement from the costly long-term financial commitments required by large infrastructure projects in the wake of the 2008–2012 global recession, combined with the progressive realization that infrastructure could be an “ideal asset class” providing tangible advantages such as long duration- facilitating cash flow matching with long-term liabilities, protection against inflation and statistical diversification (low correlation with ‘traditional’ listed assets such as equity and fixed income) has prompted an increasing number of pension executives to consider investing in the asset class- this macro-financial perspective to pension investment in infrastructure was developed by Canadian and European financial economics experts, notably the World Pensions Council (WPC).
Canadian, Californian and Australian early entrants
Pension funds- including superannuation schemes account for approximately 40% of all investors in the infrastructure asset class, excluding projects directly funded and developed by governments, municipalities and public authorities. Large Canadian pension funds and sovereign investors have been particularly active in the field of energy assets such as natural gas and natural gas infrastructure, where they have become major players in recent years 
Until recently, apart from sophisticated jurisdictions such as Ontario, Quebec, California and the Netherlands, most North American, European, and UK pensions wishing to gain a degree of exposure to infrastructure assets had done so indirectly, through investments made in infrastructure funds managed by specialized Canadian, US and Australian funds 
UK Pensions Investment Platform
On November 29, 2011, the British government unveiled an unprecedented plan to encourage large-scale pension investments in roads, hospitals, airports, etc. across the UK. The plan is aimed at enticing 20 billion pounds ($30.97 billion) of investment in domestic infrastructure projects “over the next decade”. On October 18, 2012, HM Treasury announced that the National Association of Pension Funds (NAPF) and the Pension Protection Fund (PPF) had succeeded in “securing a critical mass of Founding Investors needed to move to the next stage of development [...] [and that] several major UK pension funds have signed up to the Pension Infrastructure Platform (PIP). The intention is that the Founding Investors will provide around half of the target £2 billion of investment capital for the fund, before it launches early next year” 
Some experts have warned against the risk of "infrastructure nationalism", insisting that steady investment flows from foreign pension and sovereign funds were key for the long-term success of the asset class- notably in large European jurisdictions such as France and the UK 
- PEI (Mar 2011). "Infrastructure Investor : About Us". PEI Infrastructure Investor. Retrieved Jan 26, 2013.
- Iain Jones (Nov 2, 2011). preqin.com/blog/101/4403/infrastructure-asset-class "Infrastructure: An Asset Class in its Own Right". Preqin Alternative Assets. Retrieved Jan 26, 2013.
- George Inderst (Jan 2009). "Pension Fund Investment in Infrastructure" (PDF). OECD Working Paper on Insurance and Private Pensions, volume 32. Retrieved Nov 17, 2012.
- M. Nicolas Firzli & Vincent Bazi (October 2011). "Infrastructure Investments in an Age of Austerity : The Pension and Sovereign Funds Perspective" (PDF). Revue Analyse Financière, volume 41, pp. 34-37. Retrieved October 2011.
- M. Nicolas Firzli & Vincent Bazi (July 2012). "The Drivers of Pension & SWF Investment in Energy- Focusing on Natural Gas" (PDF). Revue Analyse Financière, volume 44, pp. 41-43. Retrieved July 2012.
- Mark Cobley (20 February 2012). "Infrastructure Funds Fail to Bridge the Gap" (PDF). Dow Jones Financial News. Retrieved 17 November 2012.
- Sinead Cruise and Myles Neligan (November 28, 2011). "British Infrastructure Finance Plan No Silver Bullet". Reuters (.). Retrieved 28 November 2011.
- HM Treasury Newsroom and Speeches (18 Oct 2012). "Government welcomes first injection into Pensions Infrastructure Platform". HM Treasury Newsroom and Speeches. Retrieved Nov 17, 2012.
- Mark Cobley (7 Nov 2013). "Investors Warn against 'Infrastructure Nationalism'". Financial News. Retrieved Dec 12, 2013.