Performance analysis of Off Grid PLTS performance which is arranged in parallel series for room lighting. This research begins with the design of PLTS connected in parallel and series-parallel (mixed). This research is divided into two results, namely the preparation of solar panels whose batteries are in full condition and in empty battery condition. This study used 4 solar panels, batteries, Maximum Power Point Tracking (MPPT) and loads in the form of lamps. Data collection was carried out for 8 hours, from 08:00 to 16:00 WIB, measurements were carried out every 30 minutes. In this study the power generated from the parallel arrangement is 32.68 Watt, while in the series-parallel arrangement the value is 33.06 Watt. The ideal combination of solar panel arrangements can be arranged in series-parallel (mixed), a larger voltage in the arrangement of solar panels aims to reduce the voltage drop and power losses, if using a parallel arrangement, you must use a cable with a large size because the parallel arrangement has a value large current, therefore the power distribution is lower, the power is lost along the line.
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