Volume 4: Innovative Solutions for Energy Transitions: Part III

The Implementation of Micro Hydro Power at Diwak River, Semarang, Central Java, Indonesia Chairiyatul Fitri, Noah Joel Theofillus Wantah, Ahmad Farhan Nugraha, Abdul Najib

Abstract

Nowadays, the electrical needs in Indonesia become a very important sector, but the electrification is still at the 6th position in the Southeast Asia region, therefore in 2019, the government aims to increase the electrification to be 99.99 percent. However, it must also be balanced by the increase in the use of New and Renewable Energy (NRE). This is in accordance with the target of the Ministry of Energy and Mineral Resources to achieve 23 percent of the use of NRE in 2025. One of the areas in Indonesia that has the potential for the utilization of applied renewable energy is Diwak Village, Semarang, Central Java. The New and Renewable Energy is the micro-hydro power (MHP). Therefore, this research aims to determine the potential of the microhydropower in Diwak Village, Semarang. Basically, the micro-hydro power (MHP) could be used for an area that has stable water flow discharge and the amount of slope. The methods are calculating float method for flow discharge data, Rock Mass Rating (RMR), and calculating the capacity power. As a result, lithologies at the location are the volcanic and autoclastic breccia. The flow discharge in Diwak River is 0.29 m3 / sec, and the minimum power that will be generated with its discharge is 40.29 KW. These results sum up that the flow has good potential in utilizing MHP in Diwak Village.

Keywords renewable energy, power, discharge, Microhydro, Diwak