For my Caravan i use an LTE Network System, OVPN over an public IPV4 German Server (20 Euro/year using a raspi as ovpn server). So the missing public address doesn´t bother me.
The picture shows today/yesterday/actual week/actual month/previous month from Fritzbox 6480 LTE status monitor.
I have 2 cams at the camp (HFW4431 + Trendnet 3MP). Both are sending to 4 Tinyipcammonitor widgets with 1 picture / h and P2P is also enabled.
Sometimes i watch the events, and the events are also sending high quality pictures.
You can see, it consumes much traffic. But its not only the p2p... 1 mail has about 600kb, The video stream is also at my maximum upload (around 7-8Mbit). I like to use maximum quality
. This consumes much traffic, if i sometimes watch a bit longer the weathercam.
But there are some traffic optimizations I am going to do in the near future. If I use smart codec it reduces the traffic enormously, my new weather cam hdw5231 only needs 5-6KB/s at night and around 60KB/s at day! Compared to 360KB/s at night and 600KB/s at day. The same amount of storage is saved when viewing records. But i should say, it depends on the viewed object. Does it have much frequent changing parts, it saved traffic is not so huge. Unfortunately with smart codec you will loose IVS functionality and it´s only normal motion detection possible.
If you want i can switch off p2p to compare for a day the amount of used traffic.
But I have another problem with your solar power calculation. First of all, where is the calculation of the estimated power production/year for your location? Next, 11W seems is not enough for everything. I guess you don´t want to use a 120V Line step up regulator? I am not sure, if it is possible for the cams to work between 11,5V and 14,4-14,8V which brings the solar charger. I should be proven, if it doesn´t damage the cams. And the router must also run on this voltage.
My fritzbox lte + raspi needs 9W at 230V...
On my location i have arounf 220kw / year with a 250W panel and a micro inverter. It´s the cheapest and easiest solution, but it needs land power. It´s not an island solution.
For batteries you should not discharge below 50%, a next expensive factor. On summer time it´s normally no problem, but in winter you have maybe months without any charging! (snow on the panels, poor sun power). 2 days backup time is not much. p.e. in summer time with 12h sun I get 1,5kw, in winter with 6h sun only 200w.
for your calc with 264W/day = 96,3KW/year means in winter months about 8kw to be nearly alone powered by battery. With a 50% discharge rate you need 16kw of battery power. Giant!
A maybe better solution is a hybrid charger, with a diesel generator or a wind generator who charges the battery when they are going to low. Never did this, but its possible.
