TY  - CONF
AU  - Eggler, L.
AU  - Capellan-Perez, I.
AU  - De Blas, I.
AU  - Alvarez Antelo, D.
AU  - Adam, A.
AU  - Papagianni, G.
AU  - Parrado-Hernando, Gonzalo
AU  - Herc, Luka
AU  - Pulido-Sanchez, D.
AU  - De Castro, C.
AU  - Frechoso, F.
AU  - Cazcarro, I.
AU  - Arto, I.
AU  - Samso, R.
AU  - Duić, Neven
AU  - Batas Bjelić, Ilija
AU  - Pfeifer, Antun
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16220
AB  - WILIAM (Within Limit Integrated Assessment Model) is a global multiregional IAM that combines economic, social, demographic, environmental, energy and material related aspects into one system dynamics model. It aims to provide stakeholders with an open source, welldocumented model to assess the feasibility, effectiveness, costs and impacts of different sustainability policy options. The adequate representation of energy production is key to assess future sustainability pathways. The main function of the developed energy module is to estimate the primary energy requirements and related GHG emissions for satisfying the economic demand. This goal was achieved by 7 major sub-modules: (1) End-use: translates the economic demand into final energy demand through a hybrid approach combining bottom-up with energy intensities for different sectors. (2) Energy transformation: maps the entire energy conversion chain from final to primary energy, including intermediary energy commodities and an allocation function for power plant utilization. (3) Energy capacity: keeps track of the current power plant capacity stock, decommissioning of expired capacities, as well as the build-up of new capacities. An allocation function for choosing the suitable technology types for new capacities stands at the core of this sub-module. (4) Computation of the EROI of green technologies (5) Variability and storage: keeps track of sub-annual time scale effects on annual energy balances depending on the current power system setup (DSM, Storage, sector coupling). (6) Consideration of techno-sustainable potentials of RES considering geographical, resource and Energy Return on Energy Investment (EROI) constraints. (7) Computation of the energy-related GHG emissions.
PB  - Zagreb : Faculty of Mechanical Engineering and Naval Architecture
C3  - Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia
T1  - Modelling the long-term dynamics of the energy transition accounting for socioeconomic behaviour and biophysical constraints: overview of the Wiliam Energy Module
SP  - 151
EP  - 151
UR  - https://hdl.handle.net/21.15107/rcub_dais_16220
ER  - 

@conference{
author = "Eggler, L. and Capellan-Perez, I. and De Blas, I. and Alvarez Antelo, D. and Adam, A. and Papagianni, G. and Parrado-Hernando, Gonzalo and Herc, Luka and Pulido-Sanchez, D. and De Castro, C. and Frechoso, F. and Cazcarro, I. and Arto, I. and Samso, R. and Duić, Neven and Batas Bjelić, Ilija and Pfeifer, Antun",
year = "2023",
abstract = "WILIAM (Within Limit Integrated Assessment Model) is a global multiregional IAM that combines economic, social, demographic, environmental, energy and material related aspects into one system dynamics model. It aims to provide stakeholders with an open source, welldocumented model to assess the feasibility, effectiveness, costs and impacts of different sustainability policy options. The adequate representation of energy production is key to assess future sustainability pathways. The main function of the developed energy module is to estimate the primary energy requirements and related GHG emissions for satisfying the economic demand. This goal was achieved by 7 major sub-modules: (1) End-use: translates the economic demand into final energy demand through a hybrid approach combining bottom-up with energy intensities for different sectors. (2) Energy transformation: maps the entire energy conversion chain from final to primary energy, including intermediary energy commodities and an allocation function for power plant utilization. (3) Energy capacity: keeps track of the current power plant capacity stock, decommissioning of expired capacities, as well as the build-up of new capacities. An allocation function for choosing the suitable technology types for new capacities stands at the core of this sub-module. (4) Computation of the EROI of green technologies (5) Variability and storage: keeps track of sub-annual time scale effects on annual energy balances depending on the current power system setup (DSM, Storage, sector coupling). (6) Consideration of techno-sustainable potentials of RES considering geographical, resource and Energy Return on Energy Investment (EROI) constraints. (7) Computation of the energy-related GHG emissions.",
publisher = "Zagreb : Faculty of Mechanical Engineering and Naval Architecture",
journal = "Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia",
title = "Modelling the long-term dynamics of the energy transition accounting for socioeconomic behaviour and biophysical constraints: overview of the Wiliam Energy Module",
pages = "151-151",
url = "https://hdl.handle.net/21.15107/rcub_dais_16220"
}

Eggler, L., Capellan-Perez, I., De Blas, I., Alvarez Antelo, D., Adam, A., Papagianni, G., Parrado-Hernando, G., Herc, L., Pulido-Sanchez, D., De Castro, C., Frechoso, F., Cazcarro, I., Arto, I., Samso, R., Duić, N., Batas Bjelić, I.,& Pfeifer, A.. (2023). Modelling the long-term dynamics of the energy transition accounting for socioeconomic behaviour and biophysical constraints: overview of the Wiliam Energy Module. in Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia
Zagreb : Faculty of Mechanical Engineering and Naval Architecture., 151-151.
https://hdl.handle.net/21.15107/rcub_dais_16220

Eggler L, Capellan-Perez I, De Blas I, Alvarez Antelo D, Adam A, Papagianni G, Parrado-Hernando G, Herc L, Pulido-Sanchez D, De Castro C, Frechoso F, Cazcarro I, Arto I, Samso R, Duić N, Batas Bjelić I, Pfeifer A. Modelling the long-term dynamics of the energy transition accounting for socioeconomic behaviour and biophysical constraints: overview of the Wiliam Energy Module. in Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia. 2023;:151-151.
https://hdl.handle.net/21.15107/rcub_dais_16220 .

Eggler, L., Capellan-Perez, I., De Blas, I., Alvarez Antelo, D., Adam, A., Papagianni, G., Parrado-Hernando, Gonzalo, Herc, Luka, Pulido-Sanchez, D., De Castro, C., Frechoso, F., Cazcarro, I., Arto, I., Samso, R., Duić, Neven, Batas Bjelić, Ilija, Pfeifer, Antun, "Modelling the long-term dynamics of the energy transition accounting for socioeconomic behaviour and biophysical constraints: overview of the Wiliam Energy Module" in Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia (2023):151-151,
https://hdl.handle.net/21.15107/rcub_dais_16220 .

TY  - CONF
AU  - Herc, Luka
AU  - Pfeifer, Antun
AU  - Parrado-Hernando, Gonzalo
AU  - Capellan-Perez, I.
AU  - Batas Bjelić, Ilija
AU  - Eggler, L.
AU  - Duić, Neven
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16217
AB  - This research presents the results of energy transition pathways in the different world regions. These regions are differentiated in the aspects of the availability of resources, different demand levels and distributions as well the different hourly distributions of the availability of renewable energy. Also, the differences in the regions are presented throughout different energy transition policies that are implemented. In order to model the specifics of interactions between the renewable energy generation and power to X technologies, the process of interlinking the outputs from EnergyPLAN simulations with the WILIAM (Within Limit Integrated Assessment Model) was developed. The ranges of simulations are run in EnergyPLAN and the method of regression is used to create simple relations between input and output values. Furthermore, an additional step of input data normalization was developed to speed-up the process of conducting the simulations. The research focusses on the differences in the resulting curves for relations of the flexibility technology application levels and capacity factors of variable generation. Also, the curves resulting from regression approach are compared as well as the results of implementation in WILIAM. Preliminary results show the differences in transition pathways with the regions predominantly located in the north or south focussing more on the implementation of wind and offshore wind energy, while the regions located closer to the equator such as India opting more for solar based energy systems.
PB  - Zagreb : Faculty of Mechanical Engineering and Naval Architecture
C3  - Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia
T1  - Modelling the long-term energy transition in different regions of the world, consideration of different region-specific data
SP  - 444
EP  - 444
UR  - https://hdl.handle.net/21.15107/rcub_dais_16217
ER  - 

@conference{
author = "Herc, Luka and Pfeifer, Antun and Parrado-Hernando, Gonzalo and Capellan-Perez, I. and Batas Bjelić, Ilija and Eggler, L. and Duić, Neven",
year = "2023",
abstract = "This research presents the results of energy transition pathways in the different world regions. These regions are differentiated in the aspects of the availability of resources, different demand levels and distributions as well the different hourly distributions of the availability of renewable energy. Also, the differences in the regions are presented throughout different energy transition policies that are implemented. In order to model the specifics of interactions between the renewable energy generation and power to X technologies, the process of interlinking the outputs from EnergyPLAN simulations with the WILIAM (Within Limit Integrated Assessment Model) was developed. The ranges of simulations are run in EnergyPLAN and the method of regression is used to create simple relations between input and output values. Furthermore, an additional step of input data normalization was developed to speed-up the process of conducting the simulations. The research focusses on the differences in the resulting curves for relations of the flexibility technology application levels and capacity factors of variable generation. Also, the curves resulting from regression approach are compared as well as the results of implementation in WILIAM. Preliminary results show the differences in transition pathways with the regions predominantly located in the north or south focussing more on the implementation of wind and offshore wind energy, while the regions located closer to the equator such as India opting more for solar based energy systems.",
publisher = "Zagreb : Faculty of Mechanical Engineering and Naval Architecture",
journal = "Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia",
title = "Modelling the long-term energy transition in different regions of the world, consideration of different region-specific data",
pages = "444-444",
url = "https://hdl.handle.net/21.15107/rcub_dais_16217"
}

Herc, L., Pfeifer, A., Parrado-Hernando, G., Capellan-Perez, I., Batas Bjelić, I., Eggler, L.,& Duić, N.. (2023). Modelling the long-term energy transition in different regions of the world, consideration of different region-specific data. in Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia
Zagreb : Faculty of Mechanical Engineering and Naval Architecture., 444-444.
https://hdl.handle.net/21.15107/rcub_dais_16217

Herc L, Pfeifer A, Parrado-Hernando G, Capellan-Perez I, Batas Bjelić I, Eggler L, Duić N. Modelling the long-term energy transition in different regions of the world, consideration of different region-specific data. in Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia. 2023;:444-444.
https://hdl.handle.net/21.15107/rcub_dais_16217 .

Herc, Luka, Pfeifer, Antun, Parrado-Hernando, Gonzalo, Capellan-Perez, I., Batas Bjelić, Ilija, Eggler, L., Duić, Neven, "Modelling the long-term energy transition in different regions of the world, consideration of different region-specific data" in Book of abstracts / 18th conference on sustainable development of energy, water and environment systems, September 24-29, 2023, Dubrovnik, Croatia (2023):444-444,
https://hdl.handle.net/21.15107/rcub_dais_16217 .

TY  - CONF
AU  - Batas-Bjelić, Ilija
AU  - Rajaković, Nikola
AU  - Capellan-Perez, I.
AU  - Parrado-Hernando, G.
AU  - Herc, Luka
AU  - Pfeifer, Antun
AU  - Duić, Neven
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13010
AB  - In order to integrate more and more variable renewable energy sources (VRES) electric grids play a significant role. There is an obvious need for more interconnections and more enhanced grids with more VRES. On the other side, the monetary, material, social and spatial constraints (free corridors) impose limits on grid expansions. Robust modelling of electric grids (distribution, transmission and interconnection) at World level in integrated assessment models (IAMs) is beyond the state of the art of current computation capabilities and data availability. A number of relevant input data like length of the grids, voltage levels, rated power, and after that material prices, population density, VRES shares of generation and flexibility technologies, hourly curtailments in the energy system are not sufficient to calculate explicit limitations imposed by power flows. Therefore, the idea of this paper is that in the absence of sufficient data and computability, for the first time some expert assumptions in the form of proportions are used to represent interconnection grids as an important constraint and flexibility option for variable renewable energy production, modelled at hourly level during one year using EnergyPLAN. These assumptions are about proportions of newly integrated renewable energy between transmission and distribution grids, proportions of grids to the generation plants and their utilization. Suggested method for application in WILIAM will be illustrated.
PB  - Zagreb : Faculty of mechanical Engineering and Naval Architecture
C3  - Book of abstracts / 5th South East European Conference on Sustainable Development of Energy, Water and Environment Systems, May 22-26, 2022, Vlorë, Albania
T1  - Grid operation and investment limitations for variable renewable energy in integrated assessment modelling
SP  - 193
EP  - 193
UR  - https://hdl.handle.net/21.15107/rcub_dais_13010
ER  - 

@conference{
author = "Batas-Bjelić, Ilija and Rajaković, Nikola and Capellan-Perez, I. and Parrado-Hernando, G. and Herc, Luka and Pfeifer, Antun and Duić, Neven",
year = "2022",
abstract = "In order to integrate more and more variable renewable energy sources (VRES) electric grids play a significant role. There is an obvious need for more interconnections and more enhanced grids with more VRES. On the other side, the monetary, material, social and spatial constraints (free corridors) impose limits on grid expansions. Robust modelling of electric grids (distribution, transmission and interconnection) at World level in integrated assessment models (IAMs) is beyond the state of the art of current computation capabilities and data availability. A number of relevant input data like length of the grids, voltage levels, rated power, and after that material prices, population density, VRES shares of generation and flexibility technologies, hourly curtailments in the energy system are not sufficient to calculate explicit limitations imposed by power flows. Therefore, the idea of this paper is that in the absence of sufficient data and computability, for the first time some expert assumptions in the form of proportions are used to represent interconnection grids as an important constraint and flexibility option for variable renewable energy production, modelled at hourly level during one year using EnergyPLAN. These assumptions are about proportions of newly integrated renewable energy between transmission and distribution grids, proportions of grids to the generation plants and their utilization. Suggested method for application in WILIAM will be illustrated.",
publisher = "Zagreb : Faculty of mechanical Engineering and Naval Architecture",
journal = "Book of abstracts / 5th South East European Conference on Sustainable Development of Energy, Water and Environment Systems, May 22-26, 2022, Vlorë, Albania",
title = "Grid operation and investment limitations for variable renewable energy in integrated assessment modelling",
pages = "193-193",
url = "https://hdl.handle.net/21.15107/rcub_dais_13010"
}

Batas-Bjelić, I., Rajaković, N., Capellan-Perez, I., Parrado-Hernando, G., Herc, L., Pfeifer, A.,& Duić, N.. (2022). Grid operation and investment limitations for variable renewable energy in integrated assessment modelling. in Book of abstracts / 5th South East European Conference on Sustainable Development of Energy, Water and Environment Systems, May 22-26, 2022, Vlorë, Albania
Zagreb : Faculty of mechanical Engineering and Naval Architecture., 193-193.
https://hdl.handle.net/21.15107/rcub_dais_13010

Batas-Bjelić I, Rajaković N, Capellan-Perez I, Parrado-Hernando G, Herc L, Pfeifer A, Duić N. Grid operation and investment limitations for variable renewable energy in integrated assessment modelling. in Book of abstracts / 5th South East European Conference on Sustainable Development of Energy, Water and Environment Systems, May 22-26, 2022, Vlorë, Albania. 2022;:193-193.
https://hdl.handle.net/21.15107/rcub_dais_13010 .

Batas-Bjelić, Ilija, Rajaković, Nikola, Capellan-Perez, I., Parrado-Hernando, G., Herc, Luka, Pfeifer, Antun, Duić, Neven, "Grid operation and investment limitations for variable renewable energy in integrated assessment modelling" in Book of abstracts / 5th South East European Conference on Sustainable Development of Energy, Water and Environment Systems, May 22-26, 2022, Vlorë, Albania (2022):193-193,
https://hdl.handle.net/21.15107/rcub_dais_13010 .

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  - CONF
AU  - Parrado-Hernando, Gonzalo
AU  - Pfeifer, Antun
AU  - Herc, Luka
AU  - Gjorgievski, Vladimir
AU  - Batas-Bjelić, Ilija
AU  - Duić, Neven
AU  - Frechoso, Fernando
AU  - Miguel González, Luis Javier
AU  - Capellán-Perez, Iñigo
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12290
AB  - Working on holistic approaches that aim to capture a wide range of knowledge, researchers are usually faced with phenomena characterized by different time and geographical scales. This is the case of energy systems and Integrated Assessment Models (IAMs). More specifically, the nature of the variable renewable energy supply (VRES) has traditionally posed a barrier to accurately capturing the effects inflicted by VRES in the energy system. This research provides a soft link between an energy system model running with an hourly time step, on the one hand, and a yearly-based IAM, on the other hand, by the implementation of an emulator. The proposal here presented is a bridge, based on different types of knowledge, which successfully allows the flow of information between time scales. Results achieve a 100% renewable energy system on a case of Bulgaria. After a brief literature review on the topic, the method is explained in detail, including some results between EnergyPLAN (energy system model) and MEDEAS (Integrated Assessment Model, IAM) for Bulgaria. Results show that the ability of assessment is notably increased from the previous MEDEAS version. Finally, both results and limitations of this method are discussed. The authors hope this article captures interest in the field of IAMs, especially those which address with energy transition studies.
PB  - Zagreb : SDEWES
C3  - Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES
T1  - Modelling of 100% Renewable Energy Systems in Integrated Assessment Models by multi-timeframe regression analysis
SP  - 0128
UR  - https://hdl.handle.net/21.15107/rcub_dais_12290
ER  - 

@conference{
author = "Parrado-Hernando, Gonzalo and Pfeifer, Antun and Herc, Luka and Gjorgievski, Vladimir and Batas-Bjelić, Ilija and Duić, Neven and Frechoso, Fernando and Miguel González, Luis Javier and Capellán-Perez, Iñigo",
year = "2021",
abstract = "Working on holistic approaches that aim to capture a wide range of knowledge, researchers are usually faced with phenomena characterized by different time and geographical scales. This is the case of energy systems and Integrated Assessment Models (IAMs). More specifically, the nature of the variable renewable energy supply (VRES) has traditionally posed a barrier to accurately capturing the effects inflicted by VRES in the energy system. This research provides a soft link between an energy system model running with an hourly time step, on the one hand, and a yearly-based IAM, on the other hand, by the implementation of an emulator. The proposal here presented is a bridge, based on different types of knowledge, which successfully allows the flow of information between time scales. Results achieve a 100% renewable energy system on a case of Bulgaria. After a brief literature review on the topic, the method is explained in detail, including some results between EnergyPLAN (energy system model) and MEDEAS (Integrated Assessment Model, IAM) for Bulgaria. Results show that the ability of assessment is notably increased from the previous MEDEAS version. Finally, both results and limitations of this method are discussed. The authors hope this article captures interest in the field of IAMs, especially those which address with energy transition studies.",
publisher = "Zagreb : SDEWES",
journal = "Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES",
title = "Modelling of 100% Renewable Energy Systems in Integrated Assessment Models by multi-timeframe regression analysis",
pages = "0128",
url = "https://hdl.handle.net/21.15107/rcub_dais_12290"
}

Parrado-Hernando, G., Pfeifer, A., Herc, L., Gjorgievski, V., Batas-Bjelić, I., Duić, N., Frechoso, F., Miguel González, L. J.,& Capellán-Perez, I.. (2021). Modelling of 100% Renewable Energy Systems in Integrated Assessment Models by multi-timeframe regression analysis. in Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES
Zagreb : SDEWES., 0128.
https://hdl.handle.net/21.15107/rcub_dais_12290

Parrado-Hernando G, Pfeifer A, Herc L, Gjorgievski V, Batas-Bjelić I, Duić N, Frechoso F, Miguel González LJ, Capellán-Perez I. Modelling of 100% Renewable Energy Systems in Integrated Assessment Models by multi-timeframe regression analysis. in Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES. 2021;:0128.
https://hdl.handle.net/21.15107/rcub_dais_12290 .

Parrado-Hernando, Gonzalo, Pfeifer, Antun, Herc, Luka, Gjorgievski, Vladimir, Batas-Bjelić, Ilija, Duić, Neven, Frechoso, Fernando, Miguel González, Luis Javier, Capellán-Perez, Iñigo, "Modelling of 100% Renewable Energy Systems in Integrated Assessment Models by multi-timeframe regression analysis" in Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES (2021):0128,
https://hdl.handle.net/21.15107/rcub_dais_12290 .

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 .