McKinsey Global Institute: Productivity of Growing Global Energy Demand: A Microeconomic Perspective [1] (November 2006). In this report, the McKinsey Global Institute focuses on energy productivity -- how the growing demand for energy can be met most productively. The main finding from the report is that there are sufficient economically viable opportunities for energy-productivity improvements that could keep global energy demand growth at less than 1 percent per year. (Note: Clicking on the link above will take you to a McKinsey Global Institute Web site where you must register before downloading the report.)
CleanTech Venture Network LLC: Creating CleanTech Clusters: 2006 Update [2] (May 2006). The CleanTech Venture Network examines the factors that drive the creation of cleantech clusters, and makes policy recommendations that governments can put in place to further encourage their growth. The report spotlights and draws lessons from existing clusters in California and the Northeast.
Links:
[1] http://www.mckinsey.com/mgi/rp/resourcemarkets/
[2] http://www.c2es.org/docUploads/Creating%20Cleantech%20Clusters%20--%20E2%20&%20CVN%20May%202006.pdf