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Saudi Minister of Investment Khalid al-Falih pushed back against skepticism over the country's economic diversification plan, as Riyadh touts "green shoring" investment opportunities to woo foreign financing.

"There was many people who doubted the vision, the ambition, how broad and deep and comprehensive it is, and whether the development of a country like KSA who is so dependent for so many decades on a commodity business like oil would be able to do what we are aspiring to do with Vision 2030," al-Falih told CNBC's Steve Sedgwick on Saturday at the Ambrosetti Forum in Cernobbio, Italy.

One of the largest economies in the Middle East and a key U.S. ally in the region, Saudi Arabia has been shoring up investments in a bid to materialize Crown Prince Mohammed bin Salman's Vision 2030 economic diversification program, which spans 14 giga-projects, including the Neom industrial complex.

Under this initiative, Riyadh seeks to pivot away from its historical dependence on oil revenues — which the International Monetary Fund now sees rising until 2026, before starting to descend — and hopes to draw financial flows in the domestic economy exceeding $3 trillion, as well as push foreign domestic investment to $100 billion a year by 2030.

The Saudi minister on Saturday said that, eight years into manifesting Vision 2030, the kingdom is now "more committed, more determined" to the program and has already implemented or is about to complete 87% of its targets. Critics of the plan have previously questioned whether Riyadh will successfully deliver on its goals by its stated deadline.

In recent years, the kingdom has been attempting to liberalize its market and improve its business environment with reforms to its investment and labor laws — but has also formulated less popular requirements for companies to set up their regional headquarters in Saudi Arabia to access government contracts.

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