It is a 12v setup yes. I have been running at about 7w (I think) but was hoping to add some more if I could. The camera I am testing at the moment runs at about 2w in the real life test I have been doing, it's one of these...

http://www.ubnt.com/airvision#aircamdome

My idea was to design a system that could cope with almost no charge for 7 days, so during really bad weather we would more than likely be ok. What I am finding is that the battery appears to fully charge from the over night charge in 2-3 hours of morning light and the rest of the day is wasted basically. But these figures are changing as the nights get longer of course.

I think another 100aH battery and a 3rd 50w panel would be a pretty sound investment.

I may also look into changing the charge controller to something like this...

http://www.ecs-online.org/en/reload.html?green_controller.htm

They quote a figure of 2w of consumption for itself, and it is GPRS enabled already, so in theory I could save about 5w of power as I could turn off the SiteController (as it would be redundant) and only switch the MikroTik on when needed (for remote monitoring of the CCTV for example).

It's really hard to get good figures out of the setup I have at the moment, so something major needs to change!!!

I really like the sound of using wind, but I just can't seem to find anything that actually works!

Cheers

Cris