Self-sufficiency ratio: an insufficient metric for domestic PV-battery systems?. (October 2018)

• Record Type: Journal Article
• Authors: Sun, S.I.; Kiaee, M.; Norman, S.; Wills, R.G.A.
• Is Part Of: Energy procedia. Volume 151(2018)
• Page Start: 150
• Page End: 157
• Publication Date: 2018-10
• Subjects: solar PV -- home battery -- self-sufficiency -- CO2 -- techno-economic modeling -- environment; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2018.09.040
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: By installing a home battery to accompany rooftop solar PV, grid electricity usage is reduced and self-sufficiency increased. One motivation for pursuing this goal is environmental concern. By modelling domestic PV-battery systems in this work, self-sufficiency is found not to correlate well with CO2 emissions savings, in some cases even correlating negatively. A system's complexities, such as transmission and distribution losses, are not encapsulated in self-sufficiency. Self-sufficiency should not be considered in isolation when designing PV-battery systems to maximize CO2 emissions savings.