Wind power is capital intensive, but has no fuel costs. The price of wind power is therefore much more stable than the volatile prices of fossil fuel sources. The marginal cost of wind energy once a station is constructed is usually less than 1-cent per kWÂ·h.
The knowledge framework is a tool for analysis. 1  There are five parts to the framework: 2  scope and applications. 3  key concepts and language. 4  methodology. 5  key historical development. 6  links with personal knowledge.
Empirical evidence. Share. (also empirical data, sense experience, empirical knowledge , or the a posteriori) is a source of knowledge acquired by means of observation or experimentation. is information that justifies a belief in the truth or falsity of an empirical claim.