Naslov
Closing the Gap Towards 100% Renewable Energy System in the Case of Scarce Renewable Source Availability

Autori
Nigg, Sarina ; Pfeifer, Antun

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES / Ban, Marko et. al. - Zagreb : SDEWES, 2021

Skup
16th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES)

Mjesto i datum
Dubrovnik, Hrvatska, 10.10.2021. - 15.10.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
100% Renewable energy systems ; EnergyPLAN ; Switzerland ; Sustainable energy planning ; Zero emissions of GHG

Sažetak
The energy transition towards net-zero greenhouse gas emission energy systems puts a challenge in front of countries that aim to base their production portfolio on the variable renewable energy sources. The energy system of Switzerland is the example of such development. With the shutdown of all nuclear power plants by 2034 the Swiss energy system has to undergo some major changes in order to reach its sustainability goals. With the current energy strategy, the CO2 emissions will stay at a high level and nuclear power would nearly completely be substituted by combined cycle power plants and imported electricity. In this study, an alternative scenario is presented, aiming to reach a 100% RES share of PES and to fulfil the net-zero emission goal by 2050. For the years 2018 (reference year), 2035 and 2050 the energy system was modelled in the EnergyPLAN software. In comparison to Switzerland’s official strategy, the district heating system was further expanded, the full potential of renewable energies was included and the electrification of the transport sector was intensified. With these improvements the CO2 emissions could be lowered to 6.6 Mt/year and the RES share of PES could be increased to 83%. The electricity production from renewables is at 87.5% and 2% of the demanded electricity needs to be imported. It became clear that the renewable electricity production will be a major issue in the future since Switzerland’s capacities can not cover the increasing demand, which comes with a more sustainable energy system. To further advance towards a 100% renewable energy system it would be necessary to replace the combined cycle power plants with renewable sources and increase the sustainability in the aviation sector. It could be profitable to exploit options of running renewable energy plants in other countries or of overcoming political measures of protected land to increase the capacities.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA