CESI continues to affirm its international role in designing advanced infrastructure that enhances energy security, promotes renewable integration, and fosters regional cooperation. A prime example is the LASGO project — the new HVDC interconnection linking Latvia, the island of Gotland, and Sweden — commissioned by the Latvian TSO AST in partnership with Svenska Kraftnät.
The proposed solution features a 700 MW submarine HVDC link with two sections: one between Latvia and Gotland, and another connecting Gotland to mainland Sweden. This infrastructure will create a strategic energy corridor between the eastern Baltic region and the Scandinavian Peninsula.
More than just a link, LASGO is a future-oriented enabler of offshore and onshore wind development — particularly along Latvia’s western coastline and the Gotland area. Thanks to its tri-terminal (or hybrid) configuration, the interconnection can also support wind integration and green hydrogen production.
CESI’s studies highlight the project’s strong economic and environmental benefits: bidirectional power transmission enhances market flexibility, while CO₂ emissions in Latvia are expected to drop by 35%. The link will also reduce marginal costs, improve overall socioeconomic welfare, and minimize grid losses. Furthermore, it positions Latvia as a renewable energy hub, reducing the risk of curtailing green power in neighboring Baltic countries.
From a system perspective, LASGO strengthens reliability and responsiveness — especially during peak demand or emergencies. For Gotland, the interconnection means greater energy independence and the potential to meet its needs entirely with renewable sources. With VSC (Voltage Source Converter) technology, the project boosts grid stability and inertia, while the 500 kV design paves the way for future DC network expansion across Northern Europe.