A mechanical failure at NFEnergía's Altamira plant in Mexico cut off the natural gas feeding units 5 and 6 of the Central San Juan power station, the company said in a disclosure filed Nov 5.^[1] Those two units account for roughly 15% of all electricity consumed in Puerto Rico, a figure confirmed in both filings.^[2] NFEnergía projected it will resume gas deliveries to the island during the fourth quarter of 2026.^[3] That window is wide: the quarter runs through December, and the disclosure fixes no firmer date.^[4] The Puerto Rico Electric Power Authority has taken NFEnergía to court over the outage.^[5] The filings name the dispute but not the amount sought or the claims made. The cause sits offshore, at a plant in Mexico, yet the lost capacity lands squarely on the island's grid. The projected fix rests on NFEnergía's own timeline, not a measured one.^[1]