I think you have got good solar power system..There is plenty to learn and even I will upgrade my solar power system now..mikronauts wrote:Use a model B+
In my review, I did some power consumption testing, and idling at a desktop, a B+ used about 230mA
5V * 0.23A = 1.15W too close to the rated 1.5W to rely on it.
I'd upgrade your solar panels to 6W+, and use it to charge a USB powerbank of at least 12000mAh capacity, and power the Pi from that.
The above numbers assume you want to run your server 24/7