Renewable Energy Potential From Cyperus Rotundus Linn Through Plant-Microbial Fuel Cell (P-MFC) As an Electrification in Indonesia's 3T Area

4,400 villages in Indonesia's 3T areas still need electricity. Plant-Microbial Fuel Cell (P-MFC) is a cheap and environmentally friendly technology to produce electrical energy. Nut grass is an interesting type of plant to study in the application of P-MFC. This grass is easy to find in various environmental conditions, including 3T areas. So, the purpose this study is to examine the application of nut grass (Cyperus rotundus Linn) as an energy source in P-MFC, its potential for existence in the 3T area of Indonesia, as well as opportunities and challenges in the 3T area of Indonesia. This study was prepared using the narrative review method. The results show that nut grass (and other C4 plant) has potential as an energy source in P-MFC because it produces 120-712.1 mW/m2 electricity, This is different from C3 plants which can only produce electricity below 100 mW/m2. Its presence in the 3T area is abundant because this type of grass is widespread in tropical areas on roadsides, fields, and swamps. The challenge is the need for clear regulations regarding using grass plants as an energy source.