Of course those are factors , but qbotix has raised investment, has managed to get some commitments for solar projects, and there's even a company using their system in the UK offering to finance projects on a long term electricity purchase basis, claiming it's much cheaper than current providers:
So qbotix might have good solutions for the issues you mention. And that is of course without having concentrated solar power, which makes a qbotix a more attractive offer.
http://castillium.co.uk/tracking-solar/tracking-250kw/
So qbotix might have good solutions for the issues you mention. And that is of course without having concentrated solar power, which makes a qbotix a more attractive offer.