Dr. Ioannis E Kosmadakis
Environmental Engineering, Democritus University of Thrace, Xánthi, Anatolikí Makedonía kai Thráki, Greece
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Academic Career Length
16Years (2011-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 April 2016 in Science of The Total Environment
Journal Article
LGLoupa Glykeria
Loupa GlykeriaAZAikaterini-Maria Zarogianni
Aikaterini-Maria Zarogianni
DKDimitra Karali
Dimitra Karali
Ioannis E Kosmadakis
SPYRIDON RAPSOMANIKIS1 August 2021 in Renewable Energy
Journal Article
Ioannis E KosmadakisCECostas Elmasides
Costas Elmasides
Georgios Koulinas
Konstantinos P. TsagarakisJournal Article
Ioannis E Kosmadakis
Costas ElmasidesDEDimitrios Eleftheriou
Dimitrios EleftheriouKonstantinos P. TsagarakisA techno-economic assessment has been carried out to evaluate the economic feasibility of energy self-consumption from a combination of photovoltaics and lead-acid batteries (PV-BAT). The Total annual economic cost (TAEC) and the cost per unit of energy were first calculated, from PV-BAT data collected over a 12 month period and then from energy system model data for the same period. A comparison of the actual renewable energy yield to optimal model output revealed that energy was restrained partially due to limited storage resources. The cost per kilowatt-hour for the two examined scenarios ranged from 0.55 to 0.62 €/kWh and from 0.42 to 0.46 €/kWh, respectively, showing room for further cost reductions. Despite currently lower energy purchasing costs from electricity providers, these findings constitute a significant price indication of the kilowatt-hour produced by PV-BAT, showing the need for further investigation into how battery sizing can be optimized and battery cost can be reduced.
Journal Article
Ioannis E KosmadakisCostas ElmasidesElectricity supply in nonelectrified areas can be covered by distributed renewable energy systems. The main disadvantage of these systems is the intermittent and often unpredictable nature of renewable energy sources. Moreover, the temporal distribution of renewable energy may not match that of energy demand. Systems that combine photovoltaic modules with electrical energy storage (EES) can eliminate the above disadvantages. However, the adoption of such solutions is often financially prohibitive. Therefore, all parameters that lead to a functionally reliable and self-sufficient power generation system should be carefully considered during the design phase of such systems. This study proposes a sizing method for off-grid electrification systems consisting of photovoltaics (PV), batteries, and a diesel generator set. The method is based on the optimal number of PV panels and battery energy capacity whilst minimizing the levelized cost of electricity (LCOE) for a period of 25 years. Validations against a synthesized load profile produced grid-independent systems backed by different accumulator technologies, with LCOEs ranging from 0.34 EUR/kWh to 0.46 EUR/kWh. The applied algorithm emphasizes a parameter of useful energy as a key output parameter for which the solar harvest is maximized in parallel with the minimization of the LCOE.
30 November 2024 in Journal of Energy Storage
Journal Article
CECostas Elmasides
Costas Elmasides
Ioannis E KosmadakisCACostas Athanasiou
Costas Athanasiou
1 January 2019 in Energy Procedia
Journal Article
Ioannis E KosmadakisCEC. Elmasides
C. Elmasides
About Me
Ioannis Kosmadakis is an experienced Electrical and Computer Engineer (ECE) specializing in Environmental Technology, Renewable Energy Systems, and Sustainability since 2003. He currently serves as Laboratory Teaching Staff in the Department of Environmental Engineering at Democritus University of Thrace (DUTH), teaching and co-teaching courses such as Renewable Energy Technologies, Design of Renewable Energy Systems, GIS, Programming with R, and Data Engineering with Python.
From 2004 to 2018, he was a Special Technical Laboratory Staff member at DUTH’s Laboratory of Atmospheric Pollution and Pollution Control Technology, focusing on experimental system design, instrumentation, data management, and automated control systems.
Besides his MSc equivalent ECE Diploma, Ioannis also holds a MSc and a Ph.D. in Environmental Engineering from DUTH. His doctoral dissertation, "Energy Flow and Demand Side Management of Smart Grids and Decentralized Energy Supply Systems," underpins his research interests in Renewable Energy Management, Autonomous Systems, Data-driven Analysis, Digital Twins, and Sustainable Energy Economics.
He has participated in 22 research projects and authored eight peer-reviewed journal articles (180 citations, h-index: 6). Ioannis has presented his research at multiple international conferences and actively serves as a peer reviewer for MDPI and Elsevier journals. Fluent in Greek, English, and German, his ORCID is orcid.org/0000-0001-8488-8243.
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