- "Scientific exploitation of space Data for improved Ionospheric SPECification (DISPEC)", European Health and Digital Executive Agency (HADEA)/European Commission, 2024-2026.
- "Travelling Ionospheric Disturbances Forecasting System (T-FORS)", European Health and Digital Executive Agency (HADEA)/European Commission, 2023-2024.
- "High Frequency over the Horizon Sensors' Cognitive Network (iFURTHER)", European Union, 2022-2025.
- "Plasmasphere Ionosphere Thermosphere Integrated Research Environment and Access services: a Network of Research Facilities (PITHIA-NRF)", European Commission, 2021-2025.
- "Warning and Mitigation Technologies for Travelling Ionospheric Disturbances Effects (TechTIDE)", European Commission, 2017-2020.
- "Space Weather Precursor Services Operations (SN-IV3) European Ionosonde and Neutron Monitor Network", ESA Project , 2012-2013.
- "ESPAS: Near-Earth Space Data Infrastructure for e-Science", European Commission, 2011-2015.
- "SWING: Short Wave critical Infrastructure Network based on new Generation of high survival radio communication system", European Commission, 2011-2013.
- "Enhancement of the DIAS system through the implementation of the TaD profiler", Research Grant, 2011-2012.
- "A new method to determine thermospheric parameters from routine ionospheric observations", NRC Science Committee, 2010-2012.
- "An improved model for operational specification of the electron density structure up to geosynchronous heights", Research Grant, 2009-2010.
- COST ES0803 action: "Developing Space Weather Products and Services in Europe", European Commission, 2008-2012.
- "Solar wind driven autoregression model for ionospheric short term forecast (SWIF): Implementation in DIAS system", Research Grant, 2008-2009.
- "Electron density profile reconstruction up to geosynchronous orbit heights", NATO Programme Security Through Science, Collaborative Linkage Grant, 2007-2009.
- "Solar wind driven autoregression model for ionospheric short term forecast (SWIF)", Research Grant, 2007-2008.
- "Advances in the scientific basis for monitoring, modelling and predicting space weather", International Space Science Institute (ISSI) International Team, 2006-2007.
- COST296: "Mitigation of Ionospheric Effects on Radio Systems (MIERS)", European Commission, 2005-2009.
- COST724: "Developing the scientific basis for monitoring, modeling and predicting Space Weather", European Commission, 2003-2007.
- "European Digital Upper Atmosphere Server (DIAS)", European Commission eContent, 2004-2006.
- "Modelling of the topside ionosphere for operational applications", NATO Science Programme, Collaborative Linkage Grant, 2003-2005.
- "Geomagnetic Indices Forecasting and Ionospheric Nowcasting Tools (GIFINT)", ESA Space Weather Pilot Project, 2003-2005.
- COST271: "Effects of the upper atmosphere on terrestrial and Earth-space communications", European Commission, 2000-2004.
- "Installation and operation of a fully automated digisonde by the National Observatory of Athens", General Secretariat for Research and Technology, Greek Ministry of Development, 1998-2000.