Economic viability of transmission capacity expansion at high wind penetrations

With growing wind power penetrations in many countries, grid and system integration becomes more and more important issues. This is particularly the case in countries or regions with good wind resources as well as substantial installed wind power capacity as found in e.g. Northern Europe. At 20% penetration in Western Denmark, the issue is pertinent here in relation to future plans of further expansion which is planned in accordance with the Danish Government’s climate change mitigation initiatives. This paper analyses the potential economic benefit of selling excess electricity production on the Nordic power pool Nord Pool in relation to the added expenses of expanding national and international transmission capacity from Denmark in order to accommodate the added export. This is done through energy systems analyses, transmission grid modelling, analyses or the required transmission grid investments and analyses of the Nord Pool price variations. The analyses are done for varying degrees of wind power penetrations ranging from 20% of the West Danish electricity demand up to 100% of the demand. The analyses demonstrate, that while there is an economic potential for some expansion in some years, in most cases the added investment proves unfeasible and either reduction of the wind turbines production under excess generation situations or other uses is more profitable unless the wind penetration very high

Sustainable Energy Planning and Management with PV, Waste heat, positive energy districts and CO2 accounting

This 41st volume of the International Journal of Sustainable Energy Planning and Management includes three categories of papers: Ordinary submissions, submissions from the 2023 Smart Energy Systems Conference held in Copenhagen, Denmark and a submission from the 2023 Sustainable Development of Energy, Water and Environmental Systems (SDEWES) conference series. The work presented address photo voltaics (PV) in the arctic and in Sweden and electricity system scenarios of Indonesia based on, e.g. PV. Staying with PV a study investigated the interplay between PV and electric vehicles in Denmark. Moving to district heating, two papers address waste heat utilisation and positive energy districts respectively, and finally a study proves into unavoidable carbon dioxide emissions in Austria accounts for carbon capture and storage (CCS) and carbon capture and utilisation (CCUS) needs and possibilities

Editorial - International Journal of Sustainable Energy Planning and Management Vol 28

This editorial introduces the 28th volume of the International Journal of Sustainable Energy Planning and Management probing into the actors engaged in energy renovation, rural district heating, and hydropower in Sulawesi. Other work address power-to-gas technology, pine needles as a source of biomass in Himalaya and finally how adaptive pricing can impact electricity demand and thus energy system performance