Interconnect the European Digital Twin Network
The LDT4SSC project, funded by the Digital Europe Programme, invited cities and organisations to apply for its first round of open calls — supporting pilots that demonstrate how existing Local Digital Twins can interconnect at European scale.
Work Strand 1 — Interconnecting Existing Local Digital Twins
Open Call 1 focused exclusively on Work Strand 1, supporting pilots that demonstrate how existing Local Digital Twins can be federated into a European-scale interoperable network.
The Local Digital Twins for Smart and Sustainable Communities (LDT4SSC) project, funded by the Digital Europe Programme (DEP), invited applications for its first Open Call. It supported pilots demonstrating how existing Local Digital Twins can interconnect to form a European-scale network — enabling cross-border data exchange and multi-city optimisation.
What was it for?
Federate Existing Twins
Link your city's Local Digital Twin with others across Europe to form a federated, interoperable network enabling cross-border data exchange.
Enable Multi-City Optimisation
Unlock insights and decision-making capabilities that span administrative borders — from traffic to energy flows and climate resilience.
Use the EU LDT Toolbox
Access open-source specifications, reference architectures and certified components that are standard-based and deployment-ready.
Scale & Replicate
Build solutions designed for replication — contributing to a unified European digital ecosystem that grows with each new pilot.
💰 What could you get?
👥 Who could apply?
Call Timeline
How to apply
Prepare and submit all required documents for Work Strand 1 to applications@ldt4ssc.eu
Interconnecting Existing Local Digital Twins
Ensure all documents are completed, signed, eligibility criteria met and alignment with Work Strand 1 objectives confirmed.
Webinar Materials
Find all materials from the Open Call 1 info session, including slides, the full webinar recording and an introduction to the matchmaking platform.
Learn more, ask questions or join a consortium
Reach out to the team, find partners via the matchmaking platform, or subscribe for updates on upcoming calls.
Apply as an Evaluator
Are you an expert in digital twins, smart cities, AI or urban planning? LDT4SSC is looking for qualified evaluators to assess open call applications. Contribute your expertise to shape Europe's digital twin ecosystem.
Learn More →
