Start worrying, says Saudi Aramco. We are at the very limit. What does this mean for investors?

The world economy is facing many challenges. So when the world's biggest oil producer comes out saying that it is quite possible that there will be more problems, there is certainly something to worry about.

Saudi Aramco says oil shortages could be the next global problem

According to Saudi Aramco, the world's largest oil producer, the global fossil fuel market is still tight. This does not bode well for a world that is still largely dependent on fossil fuels.

"Currently spare capacity is extremely low," Saudi Aramco CEO Amin Nasser said at a recent conference in London. "If China opens up, it will start to improve and the aviation industry will start to demand more aviation fuel. That may eliminate the rest of the free supply."

Nasser warns that oil prices could rise quickly - again.

"When you use up that spare capacity, the world should be concerned. There will be no room for any hitch - no interruptions, no contingencies anywhere in the world."