  Over the last few decades, there is a constantly increasing deployment of
solar photovoltaic (PV) systems both at the commercial and residential building
sector. However, the steadily growing PV penetration poses several technical
problems to electric power systems, mainly related to power quality issues. To
this context, the exploitation of energy storage systems integrated along with
PVs could constitute a possible solution. The scope of this paper is to
thoroughly evaluate the economic viability of hybrid PV-and-Storage systems at
the residential building level under a future pure self-consumption policy that
provides no reimbursement for excess PV energy injected to the grid. For this
purpose, an indicator referred to as the Levelized Cost of Use is utilized for
the assessment of the competitiveness of hybrid PV-and-Storage systems in the
energy market, considering various sizes of the hybrid system, battery energy
storage costs and prosumer types for six Mediterranean countries.
