eGrid

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eGrid is a multiplier that describes the mix of electrical generation types (e.g., coal, natural gas, nuclear, solar, hydro, etc.) that make up national and regional power grids. eGrid accounts for differences in regional electricity generation source capacities, which has implications on the amount of resulting carbon dioxide emissions. It thus provides data that enable architects to understand the real environmental impact of our building design’s energy consumption. Importantly, eGrid relates the energy lost due to inefficiencies inherent in generation and distribution systems to the on-site electrical consumption of a building, which accounts for only a portion of the electrical power generated to serve the building. Understanding the full impact of our building designs means understanding how the electricity is generated that serves the building as well as the associated emissions. eGrid is currently accepted as the way to convert site energy to source energy.

Source: An Architect’s Guide to Integrating Energy Modeling in the Design Process. 2012. The American Institute of Architects.

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