Concerns about the dwindling US energy deposits, uncertainties about the global energy supply chains, human health concerns, Green House Gas emissions and other environmental concerns have brought energy efficiency and clean technologies to the forefront. The energy supply matrix for the United States (see Figure 1) is a diverse mix – fossil fuels such as coal, natural gas, and petroleum are interspersed with other traditional and non-traditional resources. Out of these, due to its availability in abundance, easy transportation through pipelines, and clean burning nature, natural gas features prominently with total annual consumption of 22.5 Quads (1 Quad = 1 x 1015 BTU), i.e., 23.2% of the total US energy consumption. Approximately a quarter of this natural gas is used for electricity generation by peaking power plants and various distributed generation centers spread throughout the country. Additionally due to the fact that high efficiency (as high as  80%) can be achieved via. Combined Heat and Power (CHP), the fraction of natural gas used in Distributed Generation continues to increase.