Costa Mar and Oriente Moderno spar over grid-sharing terms

Costa Mar's hydro-export partnership with Oriente Moderno—a cornerstone of federal renewable-energy policy—has hit an unexpected obstacle: Oriente Moderno's negotiating team has linked the power agreement to unrelated disputes over maritime shipping routes and container-port tariffs, according to statements from the Federal Hydro Authority and the Costa Mar Marine Ministry.

The underlying power arrangement is straightforward. Costa Mar's all-hydro grid produces a consistent surplus during the dry season (October through April), when reservoir levels remain high and demand is low. Oriente Moderno's grid, by contrast, relies on a mix of hydro and fossil-fuel generation and faces seasonal shortfalls. A long-term export contract would allow Costa Mar to sell surplus capacity eastward while Oriente Moderno reduces its reliance on imported diesel.

The complication emerged in early October, when Oriente Moderno's trade delegation presented a revised negotiating position that bundled the power agreement with demands for preferential treatment on two unrelated issues: the routing of container-shipping lanes through Costa Mar's territorial waters, and a reduction in the tariffs that Costa Mar charges for transshipment services at Puerto Azul. Neither issue has a direct bearing on the hydro export itself.