Morocco holds two-thirds of phosphate reserves and mines a seventh

There is no substitute for phosphorus in agriculture. The US Geological Survey states it in exactly those words, every year, in the driest document in the minerals business¹. Every harvest moves phosphorus from soil to plant to plate; farming at modern yields returns it as fertilizer, and the fertilizer starts as phosphate rock. Whoever holds the rock holds a permanent claim on everyone else's food supply.

Mostly, that is Morocco. The USGS puts world phosphate reserves at 73 billion tonnes, of which 50 billion, about 68%, lie in Moroccan deposits¹. The next holder, China, has 3.4 billion. Yet in 2025 Morocco mined 36 million tonnes of a 250-million-tonne world market, about a seventh, while China mined 110 million, nearly half the world's output from under 5% of its reserves¹.

Why the ratio is lopsided

Reserves measure what is in the ground at today's prices; production measures what someone decided to dig this year. China's phosphate industry mines fast because it feeds a domestic fertilizer and industrial chemicals complex that consumes most of what it digs, and because provincial capacity was built for self-sufficiency rather than for reserve life. At current rates China exhausts its reserves in roughly thirty years. Morocco, at 36 million tonnes a year against 50 billion in reserves, has about fourteen centuries¹. The Moroccan position is not a failure to scale; it is a decision about when to sell an asset that does not spoil.

The decision is made in one building. OCP, the state phosphate company, holds a legal monopoly on Moroccan rock and has spent two decades moving down the value chain, selling less rock and more finished fertilizer. It earned 114 billion dirhams, about $11.4 billion, in 2025, up 17% on the year, with demand led by India's recovering imports². Its build-out program is raising fertilizer capacity from 12 million tonnes to a planned 20 million by 2027³.

OCP is also old, which matters for how Morocco thinks about it. The office was founded in 1920, before almost every institution of the modern Moroccan state, and phosphates have anchored the export ledger for a century. The shift under way since the 2010s is from volume to margin: rock is the cheapest form phosphorus is sold in, phosphoric acid earns more, and finished diammonium and monoammonium phosphate fertilizers earn most. Each step down that chain multiplies the revenue per tonne of the same mined rock, which is how a country mining a seventh of world output can aim at the largest share of world fertilizer trade rather than of world digging.

Even the miners import

The United States is the instructive customer. It mined 20 million tonnes in 2025, valued at $1.9 billion at the mine gate, from ten mines in Florida, Idaho, North Carolina, and Utah; over 95% went into fertilizer. It also stopped exporting rock in 2003, imports the balance it needs almost entirely from Peru, and now covers 16% of apparent consumption with imports¹. A country with a billion tonnes of reserves and a century of mining history runs a structural import gap, which is what falling ore grades in mined-out basins eventually do to a trade balance. Florida's deposits deplete; Morocco's horizon does not move. That asymmetry, repeated across every mature phosphate district, is what converts Moroccan reserve share into future market share without OCP lifting a shovel faster.

What 2022 taught everyone

Fertilizer had its price shock alongside energy. Russia's invasion of Ukraine disrupted two of the three big nutrient chains at once: Russia and Belarus dominate potash, and Russian natural gas underpins nitrogen. Phosphate prices moved with them, and import-dependent countries discovered that fertilizer is infrastructure with a geopolitical failure mode. The clearest institutional echo came in November 2025, when the United States added phosphate rock to its official critical minerals list, alongside potash, boron, and uranium¹. A listing changes permitting and stockpile policy, not geology.

For Morocco the shock was double-edged. Selling fertilizer requires ammonia, ammonia is made from natural gas, and Morocco has none, so OCP's flagship product ties the country's export champion to the same gas market that funds its geopolitical rivals. That dependency is what the company is now spending against.

The biggest miner is leaving the export market

The other mover in the table is moving the opposite direction from OCP. China mines nearly half the world's rock and has spent the decade restricting what leaves: export quotas on processed phosphates, inspection regimes that idle cargoes, and windows that open and close with the domestic planting season. In the first quarter of 2025 China exported 111,000 tonnes of phosphate fertilizer against a three-year average of 785,000 for the same months; January-to-September shipments ran 23% below 2024⁴. World Bank data shows DAP, the benchmark phosphate fertilizer, rising from $568 a tonne in December 2024 to $615 by March 2025 as the restriction bound⁴, and the curbs have since been extended into 2026.

For importers this is the second lesson in a decade about concentrated suppliers, and it converts directly into Moroccan advantage: every tonne China holds back is demand that arrives at Jorf Lasfar priced at the new margin. A market where one supplier restricts for domestic reasons while another expands for commercial ones transfers share to the expander without a price war.

The ammonia bet

OCP's green program allocates about $13 billion between 2023 and 2027 to renewable power, desalination, and green ammonia: hydrogen made with Saharan solar and wind, converted to ammonia at a planned million-tonne complex near Tarfaya powered by 3.8 gigawatts of renewables, with targets of one million tonnes by 2027 and three million by 2032³. If the targets hold, the world's largest phosphate exporter stops buying its nitrogen from the gas market and starts making it from sunlight on its own coast. The targets are corporate announcements, not deliveries; the capital raised and the contracts signed are real, and the first plants are under construction.

The logic runs deeper than input costs. Fertilizer demand growth is in Africa, where application rates are a fraction of Asian levels and where OCP has built blending plants and distribution partnerships across the continent. A company that controls the phosphorus, makes its own nitrogen, and sits a short sail from both European and Atlantic African ports is positioned the way Gulf producers are positioned in oil: lowest political distance to the growth market, longest reserve life among the incumbents.

The asterisk on the map

Part of the reserve base sits in Western Sahara, where OCP operates the Bou Craa mine, and the legal status of trade from the territory is contested in ways that reach European courts. On 4 October 2024 the EU Court of Justice upheld the annulment of the EU-Morocco trade and fisheries agreements as applied to Western Sahara, ruling that they had been extended to the territory without the consent of its people⁵. The commercial effect on phosphates has been limited; most Bou Craa rock ships to buyers outside the EU, and the great bulk of Moroccan production comes from the undisputed Khouribga and Gantour basins. The ruling matters as a boundary marker: it prices a legal risk into one corner of the reserve map and leaves the other 95% untouched.

What to watch

Three numbers again. OCP's fertilizer capacity against the 20-million-tonne 2027 target, because the value-chain strategy lives or dies on execution³. The ammonia tonnage actually delivered from Tarfaya, because a green input at industrial scale would be a first for the industry, not an increment. And India's import volumes, because the 2025 revenue jump rode on them² and Indian fertilizer subsidy policy changes with its budgets. The reserves need no watching. They will still be there, which is the point of the whole strategy.