Dominican Republic Planned 700MW Cable to Puerto Rico
The Hostos Project aims to link the regional power grids via a 700-megawatt submarine cable.
Updated on Sept. 28, 2026 in Utilities
Live Poll
Do you support prioritizing international cooperation projects to develop the country's natural resources?
The Caribbean Transmission Development Company has unveiled the Hostos Project, a 700-megawatt submarine cable designed to connect the electrical grids of the Dominican Republic and Puerto Rico. Energy and Mines Minister Joel Santos is currently leading discussions on the proposal during Dominican Week 2026 in Washington, D.C.
Why it matters
This infrastructure proposal aims to enhance regional energy security and electricity market integration between the two Caribbean territories. It coincides with new government cooperation frameworks focused on developing critical mineral supply chains, including rare earth element studies in Pedernales.
The proposed Hostos Project features a 700-megawatt capacity submarine electrical connection across the Mona Passage. The scope of the project links the Dominican Republic and Puerto Rico's power systems as part of a broader regional energy security push.
The players
Joel Santos
The Minister of Energy and Mines for the Dominican Republic who is currently prioritizing regional energy integration and critical mineral development.
Caribbean Transmission Development Company
The private sector entity responsible for presenting the Hostos Project proposal to link regional power grids.
The details
The proposed submarine cable would provide a direct electrical bridge across the Mona Passage, enabling the potential integration of electricity markets. Concurrently, the Dominican government has established cooperation frameworks with the U.S. and the European Union to survey rare earth element deposits in areas like Pedernales. These mineral studies and the transmission project represent a shift toward securing critical mineral supply chains and enhancing regional grid reliability.
Timeline
September 2026: Dominican Week 2026 takes place in Washington, D.C.
Market Landscape
The Hostos Project follows the strategic pattern set by the recent bilateral cooperation framework for critical mineral supply chains between the Dominican Republic and the United States. This infrastructure initiative marks a deepening of regional energy integration efforts involving the Dominican Republic and Puerto Rico.
Operators in the regional energy sector should monitor the project's regulatory progress, as a successful 700-megawatt interconnection would significantly alter regional power supply reliability. Companies involved in mineral extraction or energy infrastructure should track the specific timelines for the Pedernales resource studies.
The takeaway
The Hostos Project highlights a significant shift toward cross-border energy sharing and mineral development in the Caribbean. Operators should monitor the progress of the rare earth element studies in Pedernales as a key indicator of regional investment stability.
Further reading
For broader trends in regional grid stability, visit the Utilities section.
Source note: This article includes information reported by Dominicantoday.
Live Poll
Do you support prioritizing international cooperation projects to develop the country's natural resources?
