▎ 摘　　要

NOVELTY - The energy and power management system (100) has a grid (102) linked to several meters (108a, 108b, 108c, 108d) to control signals and display status and measurement. Several energy storage devices (106) in communication with several nanogrid panels (104) are connected to a DC-AC inverter and is connected to any one of several meters for supporting photovoltaic output generation by balancing demand and supply of energy load by means of charging and discharging of the energy storage devices. Several energy storage devices comprise several batteries each having a direct current- direct current, DC-DC converter and a DSP control for charging and discharging of energy storage devices for balancing demand and supply of the energy load. A graphene supercapacitor is provided with a bidirectional converter and a DSP control for injecting an optimum power output to prevent rapid discharge of several batteries and for extending shelf life of the batteries. USE - Energy and power management system for managing, harvesting, storing and discharging of electrical power to produce renewable energy that is used in residential and small commercial units. ADVANTAGE - The energy and power management system ensures demand and supply of renewable energy to an energy load. The use of microgrids comprising distributed renewable resources, distributed storage units and load are found to enhance stability and reliability of power grids and make conventional power grids suitable for distributed renewable generation. The graphene supercapacitor comprises a bidirectional converter and a digital signal processing (DSP) control for injecting an optimum power output to prevent rapid discharge of the batteries and for extending shelf life of batteries. The nanogrids form microgrid building blocks which can increase power quality and reliability, reduce peak load seen by grid and avoid peak energy costs, reduce transmission and distribution losses by having on-site generation and energy storage, supply ancillary services to customer loads, and reduce electricity tariff. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for managing, harvesting, storing and discharging of electrical power to produce renewable energy and power management system. DESCRIPTION OF DRAWING(S) - The drawing shows a general overview of the nanogrid energy and power management system. 100Energy and power management system 102Grid 104Nanogrid panels 106Energy storage devices 108a, 108b, 108c, 108dSeveral meters