Abstract
This paper presents a smart system prototype, which is on an Arduino platform, to managing solar panels and batteries installed on grid in a household. The batteries here are as storage of surplus power produced by solar panels in supplying loads. The aim of employing a smart system is to reduce use of power consumption from grid maximally and to increase the lifetime of batteries. In the lab project experiment, we used some lamps with a 40 watt of the total of power to representing electric loads in a household and three power sources that are a power grid using PLN, a solar panel with a 50-watt power output, and a 100Ah Battery. All of the power sources and the load connect in parallel, and operate in DC circuits with 12 Volt of operational voltage. One of some testing, which was done about ten testing cases, showed that when the battery was in full charging, and the panel produced a maximum power, there was no power coming out from the grid to supply the loads instead the panel was solely supplying the loads. Employing a smart system to manage solar panels on grid gives a highly significant advantage because the system programmed can do complex controls.
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