V x A = W btw, so let's say 5V x 2A would be 10W (like the solar staking that I am experimenting with).
I used 2 solar power packs for roughly about €10 a piece, but that is not enough to have it staking 24/7.
For your mining device (grid seed?), I guess you'll need a way bigger and thus more expensive solution like eg. this one https://www.alibaba.com/product-detail/500W-Solar-Power-Generator-System-for_1112192895.html?spm=a2700.7724857.29.12.E1lAG6
thanks for the link giz heres the specs i didnt have time to post this morning if anyone else has good info or reads.
R-BOX Specs:
Hash Rate: 32-37 GH/s
Power Consumption: 40-50W
Chip: AM Gen 3 TSMC 40nm
Mining Software: Cgminer
Dimensions: 90mm(L) * 90mm(W) * 70mm(H)
Weight: 418 grams
Cooling: Large heatsink and fan
Power Input: 12v 5A DC input
Supported Operating System: Windows 7, Windows 8, Windows 8.1, Raspberry Pi, Linux, Ubuntu
- See more at: http://www.bitminingshop.com/Rockminer-R-Box-32-37#sthash.aGymjage.dpuf