If the Micropower hub is connected to a VMS/server like Milestone this would be useful for a situation like a school campus that might want 1 or more solar powered cameras up to 1/2 mile from the main facility, with wireless links back to the head end. Using 4G cellular for this type of situation might not be as efficient as the MicoPower system and may not integrate as well as the MicroPower system.
The IR illumination built into cameras/housings are likely to have a somewhat limited useful distance/angle, example: in order to deliver LED light 100' at a 45 degree FOV usually requires a standalone lighting system, with greater power requirements resulting in larger solar electric plant.
Assuming there's zero light at night, if a client wants to take measures to protect their property and the camera system from theft at a remote location, a solar powered camera system can be equipped with PIR motion sensors that will fire off LED white lighting upon detected event (or strobe lights if LED lighting is infrared), play recorded warning messages or talk live to intruders through loudspeakers. This tactic usually chases any intruders away before they do any damage. We usually use Mobotix cameras for these type of projects due to low power requirements of cameras (5w) and most all the functionality of a VMS/DVR/NVR is embedded into each camera, just add a 128GB SD card to the camera for storage.
An alternative to using PIRs and LED lighting for zero light conditions could be to use thermal cameras.