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    A modelling study of renewable and stored energy sharing and pricing management system developed for multi-apartment complexes
    (IEEE Computer Society help@computer.org, 2015) Kiray, Vedat; Topal, Taner; Şağbanşua, Lütfü; Atacak, İsmail
    A unique system that will enable the efficient and shared usage of PV panels in multi-apartment complexes and sharing of energy is developed in this study along with a modeling scheme. Efficient and shared usage of the panels which is suggested as the solution requires sharing and pricing the energy in the apartment complex. In this modeling study which is conducted in Matlab and Simulink environment, the available energy is initially allocated for all the apartments and has them use it for free. The modeled system is applied to a three-apartment complex and the simulation results are obtained based on the electricity pricing tariff in Turkey. The amounts reflected in the electricity bill in the cases where the solar energy used and not used are calculated separately and compared later in the experimental results. It is demonstrated that the shared energy of the apartment complex can be allocated in an efficient and fair way. Moreover, it is proved that the budget generated by using the cheap energy can pay off the fix costs such as battery charge and renewal costs. © 2015 Elsevier B.V., All rights reserved.
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    Utilization of energy storage systems charged from grid in buildings and comparison with solar systems
    (2013) Kiray, Vedat; Şağbanşua, Lütfü; Topal, Taner
    This study is motivated by the fact that a big portion of energy consumption between the hours of 17:00 and 22:00 when the global energy consumption reaches very high levels occurs at residential areas. The aim here is to discuss the applicability of energy storage systems in the multi-apartment complexes with energy management systems by providing experimental results. The results also include an economic comparison between solar systems and energy storage systems. Savings reflected on the monthly bills both from the solar energy and stored energy consumption based on various scenarios and the time for return of investment resulting from these savings are also provided. The findings point out that the energy storage systems can produce substantial amounts of savings both for the end users and the country overall by letting the apartments store the energy when it is cheaper during the day and use the stored energy when it is expensive. © 2014 Elsevier B.V., All rights reserved.