The knowledge of these systems is increasing over time throughout all of our communities. The issue is still the technology. The technology needs to be proven. It needs to be explored. It's one thing to design it, but it's another thing to actually put it into practice and make it happen. Without some significant funding from government levels, and unless there's some help from others, private industry will not be entertaining these projects.
On March 12th, 2009. See this statement in context.