= Target =
Power a 12V/2A (24W) system for 24h/24h, using an autonomous solar system in the Netherlands (read: not very sunny).

Calculations:
{{{
24W * 24h =~  0.6kW
 2A * 24h =  48.0Ah
}}}

= Idea/Brainstorm =
* Use [http://www.geo-dome.co.uk/article.asp?uname=solar_mirror mirrors] to increase efficiency.