"Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs."

The Report of the U.N. Brundtland Commission, Our Common Future, 1987
"History teaches us that men and nations behave wisely once they have exhausted all other alternatives"

Abba Eban
"If there are to be problems, may they come during my life-time so that I can resolve them and give my children the chance of a good life."

Kenyan proverb

Sustainable energy systems with focus on personal transport electrification


Moderators: Prof. Nikola Rajakovic, Dr. Ilija Batas Bjelic

The personal transport has both, significant emissions share in the present energy systems, and significant potential for integration with variable energy production in sustainable energy system. Therefore, modelling of the integration of transport sector into building, city and national energy systems solutions will be presented. Afterwards, the method for the the estimation of the range of personal electric vehicles based on the user driving cycles and in the limited existence of the electricity charging infrastructure will be elaborated. Later on, the detailed modelling of the charging infrastructure with charging location optimal placement purpose will be presented with the case study for City of Nis. Also, modelling of the integration of transport sector into the 100% renewable electricity for the City of Dubrovnik case study using hourly model to find optimal charging operation of the charging infrastructure will be presented. Finally, four studies presented by the authors, will be summarized by the moderator with a broader outlook of the current opportunities and obstacles for the implementation of the smart energy infrastructure in Republic of Serbia and open discussion with audience.

Dr. Aleksandar Janjic
University of Nis, Nis, Serbia
Panel: Sustainable energy systems with focus on personal transport electrification Title: Multi-criteria analysis of sustainability criteria The main topic is the necessity to compare different, often opposite criteria in sustainability (economic, social,
show abstract

The growing interest for sustainable city transport and electric vehicles (EV) integration requires an efficient infrastructure for vehicle charging. The usual approach for the optimization of charging station locations was the location, but not the location - allocation problem. In other words, optimization was carried out for the predefined number of stations, with the fulfillment of single or multiple criteria. The new – multi-criteria approach for the optimization of both charging station number and location should be taken into account. The criteria for the optimization include: economic aspects and revenues from ancillary services, EV owner satisfaction, location safety, social impact and importance of charger location and power distribution network capacity.

Choosing the best location for EVCS requires decision making process and in the literature, two methodologies for
solving this problem can be identified:Multiple Objective Decision Making(MODM), Multiple Criteria Decision Making
(MCDM).The factors that are considered in the application of thismethodology for the selection of optimal locations can bequantified: construction cost and running cost, traffic status,impact on power grid. On the other hand, EVCS impacts onecology and urban development are not taken into account. This is the main reason for criticism of this approach for
determining optimal locations of EVCS. These models consider quantitative criteria, but are not able to analyze the
subjective factors that also have a major impact on the choice of locations, such as the environment and ecology.
MCDM methodology explicitly considers multiple conflicting criteria when selecting the best alternative for a particular problem. It can compensate for deficiencies of MODM, taking into account both quantitative and qualitative criteria for determining optimal locations for EVCS (optimal site of electric vehicle charging station).

Prof. Goran Krajačić
University of Zagreb, Zagreb, Croatia
Impacts of transport sector digitalization and electrification on medium and long term energy planning
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Transport currently accounts for 28% of global final energy demand and 23% of global CO2 emissions from fuel combustion (IEA, 2017). Even though efficient electric vehicles have been around for more than 100 years it is interesting how there were no significant scale up of their production until recently. There are many new moments in  development of electromobility so electrification of personal transport must be seriously taken into account when planning  the future energy systems for next 10 to 30 years . The highest impact to the development certainly comes from digitalization, as both  the vehicles and supporting infrastructure becomes more connected and smarter. Besides electrification, digitalization and connectivity also impact the automation, which will certainly change current patterns of vehicle behaviour on the roads  and ways how they are used in society. Due to efficiency increase there could be significant decrease in the both primary and finally energy use, however, cheaper, more efficient and automated transport can also cause rebound effects which means more travel and consequently increase in energy use.  To answer the fast development of electromobility right policy must be proposed and followed. In this light, the European Commission’s “Europe on the Move” strategy asks to adopt current legislation  and set up initiatives to promote “clean, competitive and connected mobility” (European Commission, 2017).

Dr. Huseyin Ayhan Yavasoglu
Tubitak, Kocaeli, Turkey
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Benchmarking the performance of cities across energy, water and environment systems
related metrics presents an opportunity to trigger policy learning, action, and cooperation to bring cities closer to sustainable development.