- Kaldellis J.K., Kavadias K., Filios A.E., Garofallakis S., 2004, "Income loss due to wind energy rejected by the Crete island electrical network – the present situation", Applied Energy, Vol.79, pp.127-144.
- Kaldellis J.K., 2004, "Investigation of Greek wind energy market time-evolution", Energy Policy, Vol.32, pp.865-879.
- Kaldellis J.K., 2004, "Parametric investigation concerning dimensions of a stand-alone wind-power system", Applied Energy, Vol.77, pp.35-50
- Kaldellis J.K., Kavadias K., 2004, "Evaluation of Greek wind parks visual impact: The public attitude", Fresenius Environmental Bulletin, Vol.13(5), pp.414-423.
- Kaldellis J.K., 2004, "Optimum technoeconomic energy autonomous photovoltaic solution for remote consumers throughout Greece", Energy Conversion and Management, Vol.45, pp.2745-2760
- Kaldellis J.K., Koronakis P., Kavadias K., 2004,"Energy balance analysis of a stand alone photovoltaic system, including variable system reliability impact", Renewable Energy, Vol.29, pp.1161-1180
- Kaldellis J.K., Kavadias K., Kondili E., 2004, "Renewable energy desalination plants for the Greek islands - technical and economic considerations", Desalination, Vol.170, pp.187-203
- Kaldellis J.K., Vlachos G.Th., 2004, "Application of gas-turbine exhaust gases for brackish water desalination: a techno-economic evaluation", Applied Thermal Engineering, Vol.24, pp.2487-2500.
- Kaldellis J.K., Spyropoulos G.C., Chalvatzis G.C., 2004, "The impact of Greek electricity generation sector on the national air pollution problem", Fresenius Environmental Bulletin ,Vol.13(7), pp.647-656.
- Kaldellis J.K., Voutsinas M., Paliatsos A.G., Koronakis P.S., 2004, "Temporal evolution of the sulphuric oxides emissions from the Greek electricity generation sector", Environmental Technology, Vol.25, pp.1371-1384
- Κονδύλη Αιμ., Καλδέλλης Ι.Κ., 2004, "Βελτίωση Περιβαλλοντικών Επιδόσεων των Επιχειρήσεων: Η Τεχνικο-Οικονομική Διάσταση", Περιοδικό "Τεχνικά", Τεύχος 209, σελ. 70-77, Δεκέμβριος 2004.