Ask HN: Sellenium or Windmill?

If you meant 'photovoltaics' with your 'sellenium' (which is Selenium, and that, while light sensitive is not the compound used in solar cells, but Silicium) then the answer is a bit of both.

And it would need a lot more information from you to give you a real answer.

go here: http://www.fieldlines.com/