Methodology

This Infrastructure Index provides an effective tool for identifying the attractiveness of 50 countries around the world for infrastructure investment. This report presents results for two aggregate measures: the Infrastructure Index score and the Infrastructure Index ranking, which is based on the Infrastructure Index score.

The scores measure an economy’s performance with respect to nine main indicators and 24 sub-indicators (see below). These scores have been calculated using an indexing methodology called ‘distance to frontier score’, which captures the gap between an economy’s performance and a measure of best practice across a wider sample of countries. A score of 100 signifies best possible performance, while a score of zero signifies worst possible performance.

The 2023 Index includes three new metrics comprised of seven new data series. The data for the six existing metrics are unchanged wherever possible. If a series has been discontinued, a comparable data series has replaced it. The weightings for the Index in 2023 have changed to accommodate the three new metrics but have largely retained the relative importance of the prior categories.

The countries covered by the Index have changed in order to provide more regional balance as well as reflect developments in the infrastructure sector globally.

In Africa, Algeria has been dropped. Angola, Kenya and Mozambique have been added.
In Europe, Portugal and Sweden are now included. Russia was dropped.
In Asia, Kazakhstan, Bangladesh, Cambodia, Iran and Vietnam have been dropped. Uzbekistan has been added.
In Middle East, Egypt has been added.

The parameters of the Infrastructure Index are based on the nine main indicators and further sub-indicators. The table following indicates the weightings of each of components:

Economic status	21%	Credit rating and outlook	14%
		Interest rates	4%
		Annual trade (% of GDP)	3%
Political stability	15%	Governance and stability	8%
		Regulatory stability	5.5.%
		Rule of law	1.5%
Private participation	13%	Size of private sector	5%
		Procuring infrastructure PPPs	4%
		Gross fixed capital formation (% of GDP)	4%
Infrastructure environment	10%	Quality and condition of infrastructure	5%
Infrastructure environment	10%	Planning for future projects	5%
Protectionism	10%	FDI regulatory restrictiveness index	5%
		Average tariff rate	2.5%
		Non-tariff measures	2.5%
Ease of doing business	10%	Ease of doing business	6%
Ease of doing business	10%	Transparency/corruption	4%
Market size	9%	GDP	3%
		Gross fixed capital formation	3%
		Population	3%
Sustainability and innovation	6%	Environmental performance	4%
Sustainability and innovation	6%	Innovation	2%
Tax environment	6%	Corporate tax rate	2.5%
		Complexity	2.5%
		Resource drain	1%

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