Tourism objects in Jepara Regency and Karimunjawa District can be relied on for both natural tourism and marine biodata so that they attract tourists both domestically and internationally. From 2009 to 2019 there was an increase even though the amount was not constant, this was enough to increase the local Regional Revenue Budget. one way that can raise prestige in the world of tourism in the era of globalization and the digital era 4.0 is by adding means of sea ship transportation with the model of a winged passenger ship, which can fly low above sea level, faster and more efficiently by displaying the Weigh-In Ground Effect (WIG). The purpose of this study is to describe the increase in local revenue (PAD) for tourism objects with the addition of a fleet of fast passenger boats based on wing in grounds effect craft (WIG) at tourism objects in Karimunjawa, Jepara. This research uses quantitative data with associative type. The data collection technique used by the researcher is based on documentation, library studies, and the results of the development of previous researchers. From the results of the study, it can be concluded that there is a significant effect of increasing tourism supporting elements, the number of infrastructure facilities, and tourism promotion costs on increasing regional income.

One of the greatest potentials of renewable energy is solar energy, which can produce electricity. The industry welcomed this to utilize solar energy to produce electricity through a PV rooftop system. The advantage of PV rooftops in producing electrical energy is in terms of investment costs that can eliminate the land component because it utilizes the roof of an industrial building as a place for PV rooftops to produce electrical energy. Soy Sauce companies, as one of the industries engaged in food, can utilize a PV rooftop with 300 kWp to produce electricity. The electrical energy produced by the PV rooftop can reduce 17,23% of the total electrical energy consumed by soy sauce companies in one day from PT. PLN electrical energy sources. A rooftop PV investment capacity of 300 kWp has a payback period of 12 years with an IRR value of 7% and a lifetime of using PV rooftop for 25 years.