Costa Mar's Hydroelectric Reserves Fall to Seasonal Low

The Costa Mar hydroelectric system entered the dry season this week with reservoir levels at 67 percent of full capacity, according to readings from the Federal Hydro Authority's monitoring station at Presa del Río Esperanto. The decline mirrors the region's transition from May's tail rains into the six-month period when rainfall drops sharply and river flow diminishes. Federal officials have begun coordinating with Tierra Verde and Oriente Moderno to manage power-export commitments through September.

The Río Esperanto's flow has historically powered not only Costa Mar's domestic grid but also surplus generation sold to neighbouring regions under the Federal Energy Compact. This year's dry-season outlook depends on June and July rainfall patterns, which remain unpredictable. The Federal Hydro Authority has signalled no immediate constraint on domestic supply, but the export margin—the power available for sale beyond Costa Mar's own consumption—is tightening.

The last comparable May-to-June transition occurred in 2023, when a prolonged dry spell forced the region to reduce exports by 18 percent. Regional cooperatives and tourism operators have begun contingency planning. The Marine Ministry in Puerto Azul declined to comment on specific scenarios, but a spokesperson acknowledged that power availability shapes the operating calendar for desalination plants that support both the tourism sector and local agriculture.