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tonnesCO2e <br />600,000 <br />500,000 <br />400,000 <br />300,000 <br />200,000 <br />100,000 <br />RENEWABLE ENERGY STRATEGIES <br />■ Green Power Purchase - Commercial/Industrial <br />Green Power Purchase - Residential <br />2005 2010 2015 2020 2025 2030 2035 2040 <br />Figure 8 Total building electric emissions reductions from renewable energy. <br />Achieving 100% renewable electricity by 2030 will have the greatest impact on carbon emissions in St. Louis <br />Park, reducing total emissions by nearly 33%. The emissions reduction calculation assumes the building <br />efficiency goals are met through 2030. The total rooftop generation potential was calculated using a GIS <br />mapping tool. The rooftop resource is estimated to be equal to approximately 44% of the total electricity used <br />St. Louis Park. The rooftop estimate does not consider various impediments to solar energy systems, like air <br />handling units, vents, green roofs, or patios, and therefore may overestimate the available resource. However, it <br />serves as an indicator of how much solar electricity could be generated within the city boundary. This number is <br />significantly greater when ground mount applications are considered, particularly where there is underutilized <br />land, such as large surface parking lots or brownfields. <br />G <br />