CLUSTER
Collection of firms with related and interdependent activities
Located in a common region
With a labor force of researchers, and high-level, industry knowledgeable workers
And sufficient critical mass to attract outside economies
CLEAN ENERGY
Energy derived from highly efficient, clean technologies
Includes all forms of renewable energy (wind, solar, biofuels, etc) and other technologies such as fuel cells and combined heat and power
Incorporates efficient utilization, distribution, and end uses of clean energy - from smart electric grids to more efficient engine controls to green building applications