Edesur Dominicana, one of the Dominican Republic’s electricity distribution companies, has launched an extensive infrastructure program worth RD$649,154,324 to modernize its power distribution network across multiple areas within its concession zone. The initiative is designed to improve service quality, reduce network congestion and increase system reliability for more than 550,000 customers in 179 communities.
The investment covers the National District, Santo Domingo Oeste, Los Alcarrizos, Pedro Brand, San José de Ocoa, Barahona and Independencia provinces. Planned work includes the construction of new medium-voltage circuits, the reconductoring and reconfiguration of existing distribution lines, strategic interconnections between circuits, load transfers and upgrades to electrical infrastructure.
Major Projects Focused on Greater Santo Domingo
Seven projects are being carried out across Greater Santo Domingo with an investment exceeding RD$39.2 million. These initiatives are expected to benefit more than 465,000 customers in approximately 105 neighborhoods, including Piantini, Evaristo Morales, Bella Vista, Los Jardines, Los Ríos, El Millón, La Julia, Quisqueya, Mirador Sur, Mirador Norte, Zona Universitaria, Cristo Rey, Villa Juana, Herrera, Pantoja and Los Girasoles, among many others.
One of the completed improvements includes the commissioning of two new medium-voltage feeders, PARA107 and PARA108, at the Paraíso electrical substation. According to Edesur, the expansion reduces demand on that facility and neighboring substations, including Los Prados, Embajador and Arroyo Hondo, providing greater operational flexibility.
More than 43,000 customers in ten neighborhoods are already experiencing improvements in voltage quality, service stability and system reliability as a result of these upgrades. The company said the additional capacity provides an operational reserve exceeding 30%.
New Circuits and Network Reconfiguration
Another completed project is the activation of the new MATA107 circuit at the Matadero substation. The new infrastructure redistributes electricity demand from existing circuits, helping reduce overload risks while improving supply stability for around 24,500 users across seven communities.
Edesur also plans to build the UASD108 circuit at the UASD 138-kilovolt substation. Once operational, it will redistribute electrical loads currently handled by the UASD104 circuit, improving service reliability for more than 5,000 customers.
The broader modernization program also includes load transfers and network reconfiguration involving substations at Hato Nuevo, Cabayona, DISDO, Zona Franca de Los Alcarrizos, Herrera Nueva, Herrera 138 kV, Kilómetro 10½ on the Duarte Highway, Los Prados and the Herrera Operations Center.
Expanding Improvements Beyond the Capital
Projects scheduled for 2026 also include upgrades at the Las Damas substation in Duvergé, Independencia province, Vicente Noble in Barahona and San José de Ocoa. These investments aim to strengthen electricity distribution in additional communities outside the capital region.
Edesur reported that more than 257,000 customers in Greater Santo Domingo have already benefited from the commissioning of the Alfa electrical substation. Another 21,000 users supplied by the Kilómetro 10½, Herrera 138 kV, Los Prados and Herrera substations have also seen service improvements following recent upgrades.
The company has likewise completed modernization work at substations in Rancho Arriba, Jimaní and Pedernales, supporting more efficient electricity distribution in those areas.
By expanding capacity, balancing electrical loads and strengthening critical infrastructure, Edesur expects the investment program to reduce overload risks during periods of high demand while improving voltage performance, lowering technical losses and increasing the overall resilience of the distribution system.