Snakefruit rind which has been treated as waste has not been optimally processed, in fact it is only used as waste by the community, even though snakefruit peel can be reprocessed into herbal tea for snakefruit peel. Snakefruit skin has a high content of antioxidants and polyphenols. This service activity aims to introduce new innovative products from processed zalacca peels, namely herbal teas at Micro, Small and Medium Enterprises in Wonosalam Village, Jombang Regency. The main process for making tea from bark is drying at a temperature of 60 0C and drying time for 7 hours. This service activity was carried out in August 2022 at the Wonosalam Village community activity workshop and the introduction process was carried out at Micro, Small and Medium Enterprises for soft drink products in Sumber Hamlet, Wonosalam Village. The parameter used to differentiate the quality of herbal teas is the respondent's satisfaction index on the color, taste and aroma of herbal tea. Where the highest satisfaction is in bark tea with Screwpine aroma, which is as much as 75% of the total respondents.

- The rooftop of the University of Muhammadiyah Surabaya Integrated Laboratory building which has an area of ​​210 m2 can be used as a solar power plant (PLTS). Installing PLTS in buildings has several advantages, namely as a long-term energy investment and easy to integrate with the grid electrical system. PLTS is designed to save electricity consumption. In addition, if PLTS is connected to a battery, it can meet some of the energy needs at night. To design a PLTS installation in the Integrated Laboratory building, this research uses technical and economic analysis methods. Technical analysis is carried out to determine the capacity and number of PV mini-grid components required for installation. While the economic analysis aims to calculate the investment costs and the length of time for the return on investment compared to buildings without PV mini-grid installations. Based on this research, the results show that the amount of energy required for the Integrated Laboratory building is 482.148 kWh, while the planned PLTS is able to provide energy of 216,128 kWh. The PLTS design requires an initial investment of Rp. 927,700,894,-. So by using the Payback Period (PP) method, it can be concluded that the planned design is feasible, because the comparison of the cost of return on investment is 9.13 years faster than the project age that has been determined previously, which is 20 years.