How to power up an outdoor electronic device by solar?

Hello everyone,

I’m looking for a solution that enables an electronic device (similar to a router) to be ON 24/7, 365 days/year. Should it be an outdoor solar kit?

In this case, the power must be always available, and the the battery must be able to charge (by solar) while it is giving energy to the electronic device.

The device consumption should be about 15W, peak draw of 18W, and is powered via 12V 1.5A (power supply).

What solution do you suggest?

Are there any requirements to take into consideration?

Thank you in advance!