Mi-Hy is a circular Hydroponic-Bioelectrical System (BES) designed for urban agriculture, merging Carbon (C) and Nitrogen (N) metabolism in plants to optimize their transformation into animal feed. It combines Microbial Fuel Cell (MFC) technology with hydroponics, creating a prosthetic rhizosphere for plant roots to enhance nitrogen utilization and eliminate the need for artificial nitrogen sources. Mi-Hy relies on atmospheric CO2, light, and household wastewater as inputs, aiming to utilize waste streams for CO2 and promote sustainable plant growth. The system plans to demonstrate CO2 utilization from microbial reactions and industrial processes while exploring the use of household wastewater for hydroponics. Mi-Hy also aims to bioremediate phosphorous (P) and nitrogen (N) from water, fix CO2, and generate electricity.