TY - JOUR
T1 - Cost-optimal electricity systems with increasing renewable energy penetration for islands across the globe
AU - Gioutsos, Dean Marcus
AU - Blok, Kornelis
AU - van Velzen, Leonore
AU - Moorman, Sjoerd
PY - 2018
Y1 - 2018
N2 - Cost-optimal electricity system configurations with increasing renewable energy penetration were determined in this article for six islands of different geographies, sizes and contexts, utilizing photovoltaic energy, wind energy, pumped hydro storage and battery storage. The results of the optimizations showed strong reasoning for islands to invest in renewable energy technologies (particularly wind energy), as compared to conventional power generation. Levelized cost of systems for electricity generation decrease considerably with increasing renewable energy penetrations, to an optimal point in the range of 40–80% penetration. Furthermore, renewable electricity integration in the order of 60–90% could still be achieved with no added cost from the initial situation. Cost increases after these optimal points are attributed to the growing inclusion of storage, required to meet the higher renewable energy shares. However, with battery costs forecast to fall in the coming years, and a cost reduction of 50–70% already causing lithium-ion batteries to overtake pumped hydro as a cost-favorable storage option in this model, there is a real case for islands to begin their transition in a staged process; first installing wind and PV generation, and then - as storage costs decrease and their renewable energy capacities increase - investing in storage options.
AB - Cost-optimal electricity system configurations with increasing renewable energy penetration were determined in this article for six islands of different geographies, sizes and contexts, utilizing photovoltaic energy, wind energy, pumped hydro storage and battery storage. The results of the optimizations showed strong reasoning for islands to invest in renewable energy technologies (particularly wind energy), as compared to conventional power generation. Levelized cost of systems for electricity generation decrease considerably with increasing renewable energy penetrations, to an optimal point in the range of 40–80% penetration. Furthermore, renewable electricity integration in the order of 60–90% could still be achieved with no added cost from the initial situation. Cost increases after these optimal points are attributed to the growing inclusion of storage, required to meet the higher renewable energy shares. However, with battery costs forecast to fall in the coming years, and a cost reduction of 50–70% already causing lithium-ion batteries to overtake pumped hydro as a cost-favorable storage option in this model, there is a real case for islands to begin their transition in a staged process; first installing wind and PV generation, and then - as storage costs decrease and their renewable energy capacities increase - investing in storage options.
KW - Cost optimization
KW - Hybrid power plants
KW - Island energy systems
KW - Lithium-ion battery storage
KW - Pumped-hydro storage
KW - Renewable electricity systems
UR - http://resolver.tudelft.nl/uuid:22e25714-cc64-491d-a184-c6207b997fcb
UR - http://www.scopus.com/inward/record.url?scp=85048191477&partnerID=8YFLogxK
U2 - 10.1016/j.apenergy.2018.05.108
DO - 10.1016/j.apenergy.2018.05.108
M3 - Article
SN - 0306-2619
VL - 226
SP - 437
EP - 449
JO - Applied Energy
JF - Applied Energy
ER -