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The Atlantic Corridor Paradox

Argentina's southern Patagonia region hosts some of the most productive wind resources on the planet, with capacity factors regularly exceeding 45%. Yet a paradox persists at the heart of SADI: the system's transmission architecture cannot evacuate the full output of the region's rapidly expanding wind fleet.

The 500kV corridor from Bahía Blanca to the Greater Buenos Aires (GBA) demand hub has become the primary constraint. CAMMESA dispatch records show an estimated 340 GWh of annual wind curtailment.

"The grid was built for a thermal era. Every GWh we curtail in Patagonia is replaced by a gas turbine in Dock Sud — the physics of the wires haven't caught up with the ambition of the policy." — TRANSENER Engineering Review, Q4 2025

When Patagonian wind is curtailed, SADI dispatchers substitute with GBA thermal units — predominantly gas-fired combined cycles — increasing the system's marginal carbon intensity by an estimated 18–24 gCO₂/kWh.

Transmission Upgrades Required

To solve this, major infrastructure investments must be mapped out: * New 500kV Extra High Voltage lines crossing the Rio Negro. * Substation capacity increases in the Comahue node.

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