Battery Powered 
Sensor data
Several times per day
As long as the data is not very critical (the radio spectrum it uses can be crowdy), LoRaWAN would work very well for this use case. If you don’t need to transmit a lot of data in a message (10s of bytes max) and you don’t need to transmit often (once every xx minutes), LoRaWAN is perfect.
There are a number of LoRaWAN network operators. National telecom operators or commercial operators provide coverage and you pay a subscription fee. TTN’s public network is built and operated by our community, and can be used for free. It does however not have any service guarantees (although we’ve done pretty good so far). TTN’s network server is one of several open source network server implementations that you can install on your own infrastructure (even on premise). Our v3 stack will be very easy to install on your own (cloud) server or even on a decent Linux gateway.