Spain now ranks ninth worldwide in its transition to a sustainable energy model, according to Energy Architecture Performance, published Tuesday by the World Economic Forum.

The study measures the strengths and weaknesses of the energy systems of 105 countries in relation to three indicators: their economic growth, environmental sustainability and access to energy resources.

Norway tops the list, with a score of 0.75 in fulfilling the different energy indicators, as a result of a solid energy policy that combines multiple power resources that are low in cost, abundant and relatively clean, and which have generated substantial revenues nationwide, the WEF said in a communique.

Next on the list of the top 10 is Sweden with a score of 0.71, followed by France, Switzerland and New Zealand with 0.70 each, Colombia and Latvia with 0.69, and finally Denmark, Spain and Britain, equals at 0.67.

These 10 countries obtain an average of 36 percent of their total power supply from alternative sources, including nuclear and biomass.

The report has been designed to help countries change to new energy systems, a process that will require an investment of $38 trillion (29.3 trillion euros) in energy infrastructure to meet the global demand for energy by the year 2035, according to the WEF.

"With clear objectives to achieve a balanced energy system that is environmentally sustainable, drives the economy and is secure, decision-makers should facilitate quicker and more cost effective transitions," WEF Senior Director Roberto Bocca said. "The index is a tool to help in this process." EFE