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The benefits of higher efficiency are clearly evident, both in reducing energy costs and increasing load capacity when limited by thermal constraints. There is also the impact on the global environment and reduction in growth rate of energy. HE technologies, if broadly adopted could have a substantial impact. If was assume that the average savings to a carrier is 5% across their network and that their network averages 60% of their energy consumption, that carrier would save 3% of their power consumption by adopting HE technologies. For a carrier spending $1B per year on electricity that would save over $30M (at $0.10 per kWh). The global savings are even more impressive. With global energy usage by the telecom industry at over 160 Billion kWh each year, a 3% reduction would save nearly 5 Billion kWh of electricity each year and reduce greenhouse gas emissions by nearly 4 Million tons. With a global electrical cost averaging over $0.15 per kWh this results in an annual operating expense savings of over $700 Million. A significant impact on both economic performance and environmental impact. One of the unusual aspects of HE technologies is that there is such a strong link between economic and environmental benefits, one of the missing elements in most 'green' technologies. Rather than make economic justification for the additional investment, the carriers can now make a decision which is mutually attractive. For new deployments this is an easy decision. HE technologies offer rapid payback of investment and substantial savings over the life of the network. For existing systems there is also a choice that has a rapid payback and will mitigate performance issues while providing lasting economic benefit.We believe that HE technologies are the beginning of a new thought process for the telecom industry: Leveraging the DC Power System for environmental and economic benefit.