Assessment of mitigation measures contribution to CO₂ reduction in sustainable energy action plan

The paper shows the process of the development of the sustainable energy action plan (SEAP) for the city of Zagreb and analysis of the interaction between measures, which are used for the reduction in energy consumption and CO₂ emissions. The energy savings and CO₂ reduction potential of measures are compared in a scenario and individual approach. Sectors of energy consumption listed in SEAP are buildings, transport and public lighting. The buildings sector is divided into public buildings, residential and commercial buildings. The transport sector is subdivided on public transport, public vehicles and private and commercial transport. Measures for CO₂ emission reduction are selected by a discussion with relevant stakeholders and most effective measures from the previous SEAP. Mutual interaction between measures, which influences the total result of energy consumption and CO₂ emissions reduction, is done through simulation in LEAP. In this way, it can be shown that measures have either synergetic, negative or neutral interaction between them. The analysis showed the negative interaction is prevailing and scenario approach resulted in 16.23% lower CO₂ reduction potential than the individual assessment of each measure. It is recommended to use a scenario approach in the development of SEAP for the assessment of measures CO₂ reduction potential. This will provide more efficient planning of measures for the reduction in CO₂ emissions on a local level and avoid overestimating of the CO₂ reduction potential when developing SEAPs.