Here is a comparison of the costs of various renewable electricity generation technologies, based on a California transmission study.
Similarly, I also recently wrote two articles comparing the costs of various grid integration strategies: Electricity Storage such as Batteries, Thermal Storage, Compressed Air, and Pumped Hydropower, as well as Demand Response, Smart Grid, and Transmission. Both have some charts allowing visual comparison of the technologies.
Smartgridworld Blog said
[...] http://tomkonrad.wordpress.com/2009/06/10/renewable-energy-and-grid-integration-strategies-compared/ [...]