Guyana has become one of the fastest-growing oil producers in the world, and its crude has earned a reputation among refiners for being light and sweet, meaning it requires less processing and yields more usable fuel than heavier grades found elsewhere. That quality alone would be enough to draw buyers. What has drawn wider attention, however, is a statistic that has little to do with the oil itself: the carbon cost of getting it out of the ground.

Independent energy research puts Guyana's upstream emissions at around 9 kilograms of carbon dioxide equivalent per barrel. The global average is roughly 18 kilograms. That places Guyana's offshore fields ahead of about three quarters of oil and gas producing assets worldwide, a figure that has prompted comparisons with older, less efficient operations in parts of the Middle East, Russia and West Africa.

The gap comes down to engineering. Guyana's offshore production relies on Floating Production, Storage and Offloading vessels, known as FPSOs, which sit above the wells and process crude as it is extracted. These vessels operate under a zero routine flaring policy. Rather than burning off the natural gas that comes up alongside the oil, a common practice on older platforms, the gas is captured and reinjected into the reservoir beneath the seabed. This serves two purposes. It maintains pressure in the reservoir, which helps sustain output, and it avoids releasing carbon dioxide and methane into the atmosphere. Methane in particular is a far more potent greenhouse gas than carbon dioxide over the short term, so avoiding its release carries an outsized benefit.

None of this happens without oversight. Every new offshore development in Guyana must pass an Environmental Impact Assessment before work can begin, a process that scrutinises everything from waste handling to spill response planning. The scale of what is being assessed has grown considerably. Liza 1, one of the earliest projects in the Stabroek block, produces around 540 kilotonnes of carbon dioxide equivalent a year. Longtail, a development still being brought online, is projected to exceed 2,500 kilotonnes annually by the early 2030s. The per-barrel figures may be favourable, but the absolute volumes are rising steadily as more vessels come into operation, and regulators are tracking both.

There is a wider picture too. Guyana is roughly 87 per cent forest, much of it largely untouched, and that forest cover absorbs far more carbon dioxide each year than the offshore oil sector emits. Even with production climbing towards a million barrels a day, the country's carbon ledger remains in the black. Officials in Georgetown have leaned on this fact in international climate discussions, framing Guyana as a country that can expand fossil fuel output while still functioning as a net carbon sink, a position few other oil producing nations can claim.

The Stabroek block, where the bulk of this activity is concentrated, is operated by a consortium of American and Chinese energy companies. Production across four vessels currently active in the block has passed 900,000 barrels a day, and the block's estimated resource base stands at around 11 billion barrels. At current and projected rates of extraction, that reserve is expected to sustain Guyana's oil industry for decades.

Whether the low emissions intensity holds as the number of vessels multiplies remains to be seen. For now, Guyana offers a rare case of an oil boom that its own government can defend on environmental grounds, even as the volumes being pumped out of the Atlantic continue to climb.

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