<p>This study discusses the Planning of a Rooftop Solar Power Plant with a Hybrid System at PT East Colony Kudus. The<br />model is set as a PLTS whose solar panels are adjusted to the roof area of the building. This PLTS is functioned as a new<br />renewable energy resource (EBT) in the form of a hybrid between PLTS and PLN's electrical energy source, this is done to<br />help supply electricity. Parameters determined include: roof area, solar panel capacity, inverter capacity, battery capacity<br />and payback period. The results show that PLTS with a total of 80 solar panels installed with a capacity of each panel 405<br />Watt peak, then obtained a power capacity of 32.4 kilo Watt peak which is divided into 5 arrays, with a solar charger controller<br />and inverter using a 10kW capacity of 5 units, 80 batteries with a capacity of 400Ah. So that PLTS is able to contribute 39.3%<br />of the total power needed by PT East Colony (electric power from PLN is 60.7%). This hybrid payback period will return after<br />8 years and 7 months.</p>