TY  - JOUR
AU  - Parrado-Hernando, G.
AU  - Herc, Luka
AU  - Pfeifer, Antun
AU  - Capellán-Perez, Iñigo
AU  - Batas Bjelić, Ilija
AU  - Duić, Neven
AU  - Frechoso-Escudero, Fernando
AU  - Miguel González, Luis Javier
AU  - Gjorgievski, Vladimir
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13495
AB  - Long term-energy planning has gradually moved towards finer temporal and spatial resolutions of the energy system to design the decarbonization of the society. However, integrated assessment models (IAMs), focusing on a broader concept of sustainability transition, are typically yearly-resolution models which complicates capturing the specific supply-demand dynamics, relevant in the transition towards renewable energy sources (RES). Different methods for introducing sub-annual information are being used in IAMs, but the hourly representation of variable RES remains challenging. This article presents a method to translate the main dynamics of an hourly-resolution energy model into a yearly-resolution model. Here we test our method with the current European Union region (EU-27) by configuring and applying the hourly-resolution EnergyPLAN. Multiple linear regression analysis is applied to 174960 simulations (set by varying 39 inputs by clusters and reaching 100% renewable systems), relating the adjusted capacity factors of the technologies as well as the variation of electricity demand and natural gas consumption as a function of the options installed to manage the variable RES. The obtained results allow validation of the developed approach, which shows to be flexible and easily generalizable enough to be applied to any couple of hourly and annual-resolution models and/or country. © 2022 Elsevier Ltd
T2  - Renewable Energy
T1  - Capturing features of hourly-resolution energy models through statistical annual indicators
SP  - 1192
EP  - 1223
VL  - 197
DO  - 10.1016/j.renene.2022.07.040
UR  - https://hdl.handle.net/21.15107/rcub_dais_13495
ER  - 

@article{
author = "Parrado-Hernando, G. and Herc, Luka and Pfeifer, Antun and Capellán-Perez, Iñigo and Batas Bjelić, Ilija and Duić, Neven and Frechoso-Escudero, Fernando and Miguel González, Luis Javier and Gjorgievski, Vladimir",
year = "2022",
abstract = "Long term-energy planning has gradually moved towards finer temporal and spatial resolutions of the energy system to design the decarbonization of the society. However, integrated assessment models (IAMs), focusing on a broader concept of sustainability transition, are typically yearly-resolution models which complicates capturing the specific supply-demand dynamics, relevant in the transition towards renewable energy sources (RES). Different methods for introducing sub-annual information are being used in IAMs, but the hourly representation of variable RES remains challenging. This article presents a method to translate the main dynamics of an hourly-resolution energy model into a yearly-resolution model. Here we test our method with the current European Union region (EU-27) by configuring and applying the hourly-resolution EnergyPLAN. Multiple linear regression analysis is applied to 174960 simulations (set by varying 39 inputs by clusters and reaching 100% renewable systems), relating the adjusted capacity factors of the technologies as well as the variation of electricity demand and natural gas consumption as a function of the options installed to manage the variable RES. The obtained results allow validation of the developed approach, which shows to be flexible and easily generalizable enough to be applied to any couple of hourly and annual-resolution models and/or country. © 2022 Elsevier Ltd",
journal = "Renewable Energy",
title = "Capturing features of hourly-resolution energy models through statistical annual indicators",
pages = "1192-1223",
volume = "197",
doi = "10.1016/j.renene.2022.07.040",
url = "https://hdl.handle.net/21.15107/rcub_dais_13495"
}

Parrado-Hernando, G., Herc, L., Pfeifer, A., Capellán-Perez, I., Batas Bjelić, I., Duić, N., Frechoso-Escudero, F., Miguel González, L. J.,& Gjorgievski, V.. (2022). Capturing features of hourly-resolution energy models through statistical annual indicators. in Renewable Energy, 197, 1192-1223.
https://doi.org/10.1016/j.renene.2022.07.040
https://hdl.handle.net/21.15107/rcub_dais_13495

Parrado-Hernando G, Herc L, Pfeifer A, Capellán-Perez I, Batas Bjelić I, Duić N, Frechoso-Escudero F, Miguel González LJ, Gjorgievski V. Capturing features of hourly-resolution energy models through statistical annual indicators. in Renewable Energy. 2022;197:1192-1223.
doi:10.1016/j.renene.2022.07.040
https://hdl.handle.net/21.15107/rcub_dais_13495 .

Parrado-Hernando, G., Herc, Luka, Pfeifer, Antun, Capellán-Perez, Iñigo, Batas Bjelić, Ilija, Duić, Neven, Frechoso-Escudero, Fernando, Miguel González, Luis Javier, Gjorgievski, Vladimir, "Capturing features of hourly-resolution energy models through statistical annual indicators" in Renewable Energy, 197 (2022):1192-1223,
https://doi.org/10.1016/j.renene.2022.07.040 .,
https://hdl.handle.net/21.15107/rcub_dais_13495 .

TY  - JOUR
AU  - Pfeifer, Antun
AU  - Herc, Luka
AU  - Batas-Bjelić, Ilija
AU  - Duić, Neven
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11648
AB  - Recent European Green Deal includes decision to become carbon neutral and even carbon negative region in order to tackle the climate crisis. Main technical challenge and a key factor in techno-economic analysis of the energy system of the future, based on variable renewable energy sources, is their variable production and its integration. In order to deal with this problem in long-term energy planning, different approaches have been tried, focusing on overcapacity, storage capacities and sectors coupling with heating and transport. In this research, different flexibility options, storage and demand response technologies are modelled on a national energy systems level. With the case study area modelled in EnergyPLAN model, the goal of the research is to show how each flexibility option influences the economically feasible generation capacities of renewable energy sources, storage technologies and demand response in order to reach a certain share of renewable energy in final energy consumed. To follow the numerous possible configurations of the system, flexibility index for each option and a flexibility vector for each scenario are introduced. Results show which flexibility options play key role in important steps of energy transition to 70%, 80%, 90% and 100% RES energy system.
PB  - Elsevier BV
T2  - Energy Conversion and Management
T1  - Flexibility index and decreasing the costs in energy systems with high share of renewable energy
SP  - 114258
VL  - 240
DO  - 10.1016/j.enconman.2021.114258
UR  - https://hdl.handle.net/21.15107/rcub_dais_11648
ER  - 

@article{
author = "Pfeifer, Antun and Herc, Luka and Batas-Bjelić, Ilija and Duić, Neven",
year = "2021",
abstract = "Recent European Green Deal includes decision to become carbon neutral and even carbon negative region in order to tackle the climate crisis. Main technical challenge and a key factor in techno-economic analysis of the energy system of the future, based on variable renewable energy sources, is their variable production and its integration. In order to deal with this problem in long-term energy planning, different approaches have been tried, focusing on overcapacity, storage capacities and sectors coupling with heating and transport. In this research, different flexibility options, storage and demand response technologies are modelled on a national energy systems level. With the case study area modelled in EnergyPLAN model, the goal of the research is to show how each flexibility option influences the economically feasible generation capacities of renewable energy sources, storage technologies and demand response in order to reach a certain share of renewable energy in final energy consumed. To follow the numerous possible configurations of the system, flexibility index for each option and a flexibility vector for each scenario are introduced. Results show which flexibility options play key role in important steps of energy transition to 70%, 80%, 90% and 100% RES energy system.",
publisher = "Elsevier BV",
journal = "Energy Conversion and Management",
title = "Flexibility index and decreasing the costs in energy systems with high share of renewable energy",
pages = "114258",
volume = "240",
doi = "10.1016/j.enconman.2021.114258",
url = "https://hdl.handle.net/21.15107/rcub_dais_11648"
}

Pfeifer, A., Herc, L., Batas-Bjelić, I.,& Duić, N.. (2021). Flexibility index and decreasing the costs in energy systems with high share of renewable energy. in Energy Conversion and Management
Elsevier BV., 240, 114258.
https://doi.org/10.1016/j.enconman.2021.114258
https://hdl.handle.net/21.15107/rcub_dais_11648

Pfeifer A, Herc L, Batas-Bjelić I, Duić N. Flexibility index and decreasing the costs in energy systems with high share of renewable energy. in Energy Conversion and Management. 2021;240:114258.
doi:10.1016/j.enconman.2021.114258
https://hdl.handle.net/21.15107/rcub_dais_11648 .

Pfeifer, Antun, Herc, Luka, Batas-Bjelić, Ilija, Duić, Neven, "Flexibility index and decreasing the costs in energy systems with high share of renewable energy" in Energy Conversion and Management, 240 (2021):114258,
https://doi.org/10.1016/j.enconman.2021.114258 .,
https://hdl.handle.net/21.15107/rcub_dais_11648 .

TY  - JOUR
AU  - Batas-Bjelić, Ilija
AU  - Rajaković, Nikola
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12267
AB  - Just in the immediate neighbourhood of the European Union (EU), the Republic of Serbia, one of the Western Balkan (WB) EU candidate countries, is lagging behind in the process of energy transition regardless of technological advances and policy instruments available. The EU created a momentum for energy transition acceleration with the European Green Deal, which has been forwarded to the WB through the Energy Community secretariat in the form of the Green Agenda; generally speaking, response in the form of National Energy and Climate Plans (NECPs) is expected in the short term. The Republic of Serbia’s Low Carbon Development Strategy with Action Plan (LCDSA) and the current Energy Strategy will be analysed, commented on, and improvements will be suggested for the acceleration of energy transition, based on the newest findings from the simulation-based optimization techniques using the sector coupling approach to achieve ambitious variable renewable energy shares. The motivation of this research is to provide decision makers in Serbia with the best available insights regarding sustainable energy system planning tools and possible shortcuts for delayed planning of activities. In addition, the purpose is to improve Serbia’s chance of benefitting from adoption of these strategies in the country’s faster transition towards EU membership. The research compares two scenarios to illustrate a possible policy shift from small hydro power plants to photovoltaics (PV). A further increase in PV and wind power plants has been simulated using the EnergyPLAN to achieve expected scenarios of 40% renewable energy share and some more ambitious ones—up to 80%, which is realistic only with the sector coupling approach.
PB  - Aalborg : Aalborg University Press
T1  - National Energy and Climate Planning in Serbia: From Lagging Behind to an Ambitious EU Candidate?
SP  - 47
EP  - 60
VL  - 32
DO  - 10.5278/ijsepm.6300
UR  - https://hdl.handle.net/21.15107/rcub_dais_12267
ER  - 

@article{
author = "Batas-Bjelić, Ilija and Rajaković, Nikola",
year = "2021",
abstract = "Just in the immediate neighbourhood of the European Union (EU), the Republic of Serbia, one of the Western Balkan (WB) EU candidate countries, is lagging behind in the process of energy transition regardless of technological advances and policy instruments available. The EU created a momentum for energy transition acceleration with the European Green Deal, which has been forwarded to the WB through the Energy Community secretariat in the form of the Green Agenda; generally speaking, response in the form of National Energy and Climate Plans (NECPs) is expected in the short term. The Republic of Serbia’s Low Carbon Development Strategy with Action Plan (LCDSA) and the current Energy Strategy will be analysed, commented on, and improvements will be suggested for the acceleration of energy transition, based on the newest findings from the simulation-based optimization techniques using the sector coupling approach to achieve ambitious variable renewable energy shares. The motivation of this research is to provide decision makers in Serbia with the best available insights regarding sustainable energy system planning tools and possible shortcuts for delayed planning of activities. In addition, the purpose is to improve Serbia’s chance of benefitting from adoption of these strategies in the country’s faster transition towards EU membership. The research compares two scenarios to illustrate a possible policy shift from small hydro power plants to photovoltaics (PV). A further increase in PV and wind power plants has been simulated using the EnergyPLAN to achieve expected scenarios of 40% renewable energy share and some more ambitious ones—up to 80%, which is realistic only with the sector coupling approach.",
publisher = "Aalborg : Aalborg University Press",
title = "National Energy and Climate Planning in Serbia: From Lagging Behind to an Ambitious EU Candidate?",
pages = "47-60",
volume = "32",
doi = "10.5278/ijsepm.6300",
url = "https://hdl.handle.net/21.15107/rcub_dais_12267"
}

Batas-Bjelić, I.,& Rajaković, N.. (2021). National Energy and Climate Planning in Serbia: From Lagging Behind to an Ambitious EU Candidate?. 
Aalborg : Aalborg University Press., 32, 47-60.
https://doi.org/10.5278/ijsepm.6300
https://hdl.handle.net/21.15107/rcub_dais_12267

Batas-Bjelić I, Rajaković N. National Energy and Climate Planning in Serbia: From Lagging Behind to an Ambitious EU Candidate?. 2021;32:47-60.
doi:10.5278/ijsepm.6300
https://hdl.handle.net/21.15107/rcub_dais_12267 .

Batas-Bjelić, Ilija, Rajaković, Nikola, "National Energy and Climate Planning in Serbia: From Lagging Behind to an Ambitious EU Candidate?", 32 (2021):47-60,
https://doi.org/10.5278/ijsepm.6300 .,
https://hdl.handle.net/21.15107/rcub_dais_12267 .

TY  - CONF
AU  - Batas-Bjelić, Ilija
AU  - Rajaković, Nikola
AU  - Pfeifer, Antun
AU  - Herc, Luka
AU  - Duić, Neven
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/12288
AB  - Designing the energy systems for high variable renewable energy penetrations, one should look for the flexibility of an energy systems that may be provided from various sources at supply, demand or network level. The flexibility can be provided from different options including, but not limiting to: (1) electricity demand (household and industry), (2) thermal (power, CHP) plants, (3) power to heat (CHP, heat pump district/individual), (4) transport (V2G + smart charge, synthetic fuels), (5) interconnection and (6) storage (batteries, pumped hydro, rockbed, compressed air, hydrogen…). The flexibility might be provided according to different criteria: economics, technical complexity, utilization, acceptability, feasibility, material use. Further, different constraints regarding percentages, shares, emission reductions… might be set according to proclaimed sustainable energy policy in certain region. Therefore, we will simulate various flexibility options according to their availability and priority assumed by authors for each region of nine World regions (USMCA, Latin America, United Kingdom, China, Russia, South-East Asia and Oceania, Rest of the world, ) using EnergyPLAN-Python permutation framework . This way number of synthetically generated temporary scenarios before finding optimal one and the execution time is increased in comparison to optimization approach.
PB  - Zagreb : SDEWES
C3  - Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES
T1  - Flexibility Options in 100% Renewable Energy World Regions
SP  - 0064
UR  - https://hdl.handle.net/21.15107/rcub_dais_12288
ER  - 

@conference{
author = "Batas-Bjelić, Ilija and Rajaković, Nikola and Pfeifer, Antun and Herc, Luka and Duić, Neven",
year = "2020",
abstract = "Designing the energy systems for high variable renewable energy penetrations, one should look for the flexibility of an energy systems that may be provided from various sources at supply, demand or network level. The flexibility can be provided from different options including, but not limiting to: (1) electricity demand (household and industry), (2) thermal (power, CHP) plants, (3) power to heat (CHP, heat pump district/individual), (4) transport (V2G + smart charge, synthetic fuels), (5) interconnection and (6) storage (batteries, pumped hydro, rockbed, compressed air, hydrogen…). The flexibility might be provided according to different criteria: economics, technical complexity, utilization, acceptability, feasibility, material use. Further, different constraints regarding percentages, shares, emission reductions… might be set according to proclaimed sustainable energy policy in certain region. Therefore, we will simulate various flexibility options according to their availability and priority assumed by authors for each region of nine World regions (USMCA, Latin America, United Kingdom, China, Russia, South-East Asia and Oceania, Rest of the world, ) using EnergyPLAN-Python permutation framework . This way number of synthetically generated temporary scenarios before finding optimal one and the execution time is increased in comparison to optimization approach.",
publisher = "Zagreb : SDEWES",
journal = "Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES",
title = "Flexibility Options in 100% Renewable Energy World Regions",
pages = "0064",
url = "https://hdl.handle.net/21.15107/rcub_dais_12288"
}

Batas-Bjelić, I., Rajaković, N., Pfeifer, A., Herc, L.,& Duić, N.. (2020). Flexibility Options in 100% Renewable Energy World Regions. in Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES
Zagreb : SDEWES., 0064.
https://hdl.handle.net/21.15107/rcub_dais_12288

Batas-Bjelić I, Rajaković N, Pfeifer A, Herc L, Duić N. Flexibility Options in 100% Renewable Energy World Regions. in Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES. 2020;:0064.
https://hdl.handle.net/21.15107/rcub_dais_12288 .

Batas-Bjelić, Ilija, Rajaković, Nikola, Pfeifer, Antun, Herc, Luka, Duić, Neven, "Flexibility Options in 100% Renewable Energy World Regions" in Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES (2020):0064,
https://hdl.handle.net/21.15107/rcub_dais_12288 .