Saudi Arabia’s decision not to cut oil production, despite crashing prices, marks the beginning of an incredibly important change. There are near-term and obvious implications for oil markets and global economies. More important is the acknowledgement, demonstrated by the action of world’s most important oil producer, of the beginning of the end of the most prosperous period in human history – the age of oil.

In 2000, Sheikh Yamani, former oil minister of Saudi Arabia, gave an interview in which he said:

“Thirty years from now there will be a huge amount of oil – and no buyers. Oil will be left in the ground. The Stone Age came to an end, not because we had a lack of stones, and the oil age will come to an end not because we have a lack of oil.”

Fourteen years later, while Americans were eating or sleeping off their Thanksgiving meals, the twelve members of the Organization of the Petroleum Exporting Countries (OPEC) failed to reach an agreement to cut production below the 30 million barrel per day target that was set in 2011. This followed strenuous lobbying efforts by some of largest oil producing non-OPEC nations in the weeks leading up to the meeting. This group even went so far as to make the highly unusual offer of agreeing to their own production cuts.

The ramifications of this decision across the globe, not just in energy markets, but politically, are already having consequences for the global landscape. Lost in the effort to understand the vast implications is an even more important signal sent by Saudi Arabia, the owner of more than 16% of the world’s proved oil reserves, about its view of the future of fossil fuels.

Since its formal creation in 1960 the members of OPEC, and specifically Saudi Arabia (and in reality the Kingdom’s control over global oil markets is much larger than that 16% of reserves implies as its more than 260 billion barrels are among the easiest and cheapest to extract and before enhanced recovery techniques accounted for a much larger share of global reserves) have used excess oil production capacity to influence crude prices. The primary role of OPEC has been to support price stability. There are notable exceptions – like the 1973-1974 oil embargo and a period of excess supply that undermined prices and crippled the Soviet Union in the 1980s (though whether this was a defined strategy or serendipity remains in some question), but at its core the role of OPEC has been to control oil prices. As recent events show, OPEC’s role as the controller of crude oil pricing is coming to an abrupt end.

In acting as global swing producer, OPEC relied has heavily on Saudi Arabia, which can influence global prices by increasing or decreasing production to expand or reduce available global supply. Saudi Arabia can do this not only because it controls an enormous portion of global reserves and production capacity, but does so with crude oil that is stunningly inexpensive to produce compared to the current global market. A change, however, has occurred in Saudi Arabia’s fundamental strategic approach to the global oil market. And this new approach – to refuse to curtail production to support global prices – not only undermines OPECs pricing power, but also removes a vital subsidy for global oil producers provided by the Saudi’s longtime commitment to price support.

Read more: The Energy Collective