Njau Islet solar mini-grid project commissioned May 2022 by Photons Energy is 51kWp solar PV and also consist of battery storage which is 100kWh Lithium Ion Phosphate battery bank. The system is AC-DC coupled with PV inverters, battery inverters and MPPT charge controllers. The system is serving more than 55 households in Njao Islet in Pemba.