The Internet of Things (IoT), has witnessed the growth of the Low Power Wireless Area Networks (LPWAN). The capabilities of LPWAN’s are playing the important role in connecting devices. Proper selection of the LPWAN’s technologies plays important role in implementation. LPWAN includes LoRa, Sigfox, Narrow Band-Internet of Things (NBIoT), Long Term Evolution for Machines (LTE-M) etc. This paper presents an overview of work done related to LPWAN Technologies. In this paper we presented the LPWAN market scenario. Strong momentum has observed in LPWAN market worldwide. The performance of the LPWAN Technologies such as LoRa and Sigfox is discussed. NB-Fi -range-calculator is used for theoretical performance analysis.