Design and analysis of switching power vertical wind turbines and solar panels in the equatorial region

Indonesia is an equatorial region that has a coastline of 108,000 km so that there are consistent winds from noon to evening. Indonesia also has the advantage of consistent sunlight every day, this is a huge potential to produce wind power that can be combined with solar panels. A wind turbine with a vertical axis is one type of wind turbine with the advantage of being able to work at low wind speeds. Based on BMKG data, the average wind speed in Surabaya, every month during July 2020 to June 2021 ranges from 0.81 m/s to 2.44 m/s but from the results of the distribution of wind speeds during the last one it ranges from 0m/s to 9m /s, with an average speed of between 4m/s to 6m/s. Based on these data, it is known that the wind speed above 2m/s has fulfilled the turbine operational requirements. In terms of the need for solar panels, the duration of solar radiation for the past year in Surabaya is about 2 to 8 hours to meet the battery capacity of the solar panels. Based on this analysis, a design is needed to switch power wind turbines and solar panels that can be applied in Indonesia.