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In this paper, we describe an integrated design and management approach to creating a sustainable IT ecosystem: a physical infrastructure where information technology has been seamlessly interwoven to improve environmental efficiency while achieving lower cost. Specifically, we describe five principles to achieve such integration: ecosystem-scale life-cycle design; scalable and configurable resource microgrids; pervasive sensing; knowledge discovery and visualization; and autonomous control. Application of the approach is demonstrated for the case study of an urban water infrastructure, and we find that the proposed approach could potentially enable reduction of life-cycle energy use by over 15%.
Watson et al. (2009) studied this question.