doi:10.3390/en9090681engSarasa-Maestro, C.Dufo-López, R.Bernal-Agustín, J.L.Analysis of photovoltaic self-consumption systemsART-2016-96388Components and installation prices could make the self-consumption of solar photovoltaic (PV) systems competitive. In this paper, we explore different self-consumption options, off-grid PV systems (with back-up generator and/or batteries), and grid-connected PV systems under net-metering policies. The calculation of the net present cost (NPC) reveals that the grid-connected PV-only case (for the net-metering scheme) is the most attractive from the technical and financial points of view, with a levelised cost of energy less than 0.1 €/kWh. Off-grid PV + Diesel + Batteries has a higher cost, around two or three times the grid-connected PV-only under net metering. Additionally, the off-grid PV + Diesel is less attractive from a financial point of view, which has a cost of around 10 times the PV-only under net metering. In addition, the values of life cycle CO2 emissions in each of the cases studied have been compared, and we have concluded that although the off-grid PV + Diesel + Batteries system presents lower CO2 emissions than the PV-only system, the existence of batteries does not allow one to affirm that the PV + Diesel + Batteries system is the best from an environmental point of view.2016http://zaguan.unizar.es/record/5681310.3390/en9090681http://zaguan.unizar.es/record/56813oai:zaguan.unizar.es:56813info:eu-repo/grantAgreement/ES/MINECO/ENE2013-48517-C2-1-REnergies 9, 9 (2016), 681[18 pp]byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess