Specifically, a plan to boost wind and solar energy capacity in coming years was likely to bring in $13 billion in investment, Procaccini said. There also is potential for $30 billion in mining investments to help Argentina catch up to neighboring Chile, and efforts to cut labor costs will help attract investment in oil and gas.

"Iran needs billions of dollars of investment to boost crude oil production and natural gas capacity," said Mehdi Varzi, a former official at state-run National Iranian Oil Company and now an independent consultant.

To meet Sustainable Energy for All objectives, it is estimated that renewable energy investment would need to increase by a factor of 2-3, while energy efficiency investment would need to increase by a factor of 3-6. Estimates suggest that a five-fold increase would be needed to reach universal access by 2030.

Saudi Arabia leads countries of the Middle East and North Africa (MENA) in future energy investment.

Saudi Aramco is set to launch its first public bond sale, of around $2bn, as soon as this month, as it begins to tap local currency debt markets as part of a $10bn fundraising programme.

Trade between the countries fell overall last year as oil prices dropped. Japan's 2.1 trillion yen ($18.6 billion) in imports from Saudi Arabia in 2016, mostly oil and gas, dwarfed its exports of 546.3 billion yen ($4.8 billion).

The deeply troubled power industry accounts for almost one-tenth of all bank loans in India, and thus poses a threat to already weakened lenders, according to data from Morgan Stanley. What is more, like so many other industries, the power business is facing significant technological challenges as the cost of solar energy continues falling.

A significant, years-long oil supply crunch may be approaching due to insufficient investment in exploration and production, Hess CEO John Hess said Monday at IHS CERAWeek.

ExxonMobil anticipates capital spending of $22 billion in 2017, an increase of 16 percent from 2016. Capital and exploration expenses through the end of the decade will average $25 billion annually.

Indonesia needs to invest $70 billion to $80 billion in gas infrastructure through 2030 to avoid a potential gas shortage, as domestic consumption growth outpaces supply, state-owned energy business Pertamina said Tuesday.