A1 Journal article (refereed), original research

Carbon dioxide direct air capture for effective climate change mitigation based on renewable electricity: a new type of energy system sector coupling

Open Access hybrid publication

Publication Details
Authors: Breyer Christian, Fasihi Mahdi, Aghahosseini Arman
Publisher: Springer Verlag (Germany)
Publication year: 2019
Language: English
Related Journal or Series Information: Mitigation and Adaptation Strategies for Global Change
ISSN: 1381-2386
eISSN: 1573-1596
JUFO-Level of this publication: 1
Open Access: Open Access hybrid publication


Pathways for achieving the 1.5–2 °C global temperature
moderation target imply a massive scaling of carbon dioxide (CO2)
removal technologies, in particular in the 2040s and onwards. CO2 direct
air capture (DAC) is among the most promising negative emission technologies
(NETs). The energy demands for low-temperature solid-sorbent DAC are mainly
heat at around 100 °C and electricity, which lead to sustainably operated DAC
systems based on low-cost renewable electricity and heat pumps for the heat
supply. This analysis is carried out for the case of the Maghreb region, which
enjoys abundantly available low-cost renewable energy resources. The energy transition
results for the Maghreb region lead to a solar photovoltaic (PV)-dominated
energy supply with some wind energy contribution. DAC systems will need the
same energy supply structure. The research investigates the levelised cost of
CO2 DAC (LCOD) in high spatial resolution and is based on full
hourly modelling for the Maghreb region. The key results are LCOD of about 55 €/tCO2
in 2050 with a further cost reduction potential of up to 50%. The area demand
is considered and concluded to be negligible. Major conclusions for CO2
removal as a new energy sector are drawn. Key options for a global climate
change mitigation strategy are first an energy transition towards renewable
energy and second NETs for achieving the targets of the Paris Agreement.

Last updated on 2020-20-03 at 10:03