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Building footprints were edited by Zach Bodenner in fall 2021 in preparation for this project. Then data was transferred to GPI to create this feature class. <\/SPAN><\/P>

From GPI:<\/SPAN><\/P>

\"To calculate rooftop solar potential, a set of suitability criteria were applied and calculated:<\/SPAN><\/P>

  • No solar may be built within 6 feet of the edge of the building rooftop (per OSHA and solar maintenance / installation requirements)<\/SPAN><\/P><\/LI>

  • Building slope (pitch) and aspect (orientation to the sun) were both calculated. For slope, rooftops with a no slope were calculated as \u201cflat\u201d rooftops, which have a slightly larger suitable minimum square foot area for installation than roofs with a pitch. For aspect, any rooftop area oriented northeast, north, or northwest were all considered not suitable (too few direct hours of sunlight). <\/SPAN><\/P><\/LI><\/UL>

    Once analyzed, the resulting solar insolation raster was used to calculate total solar potential\"<\/SPAN><\/P>

    <\/P>

    Abbreviations:<\/SPAN><\/P>

    W - Watt<\/SPAN><\/P>

    KW - Kilowatt<\/SPAN><\/P>

    MW - Megawatt<\/SPAN><\/P>

    GW - Gigawatt<\/SPAN><\/P>

    WH - Watt Hour<\/SPAN><\/P>

    KWH - Kilowatt Hour<\/SPAN><\/P>

    MWH - Megawatt Hour<\/SPAN><\/P>

    <\/P>

    Attribute Information:<\/SPAN><\/P>

    SolGenWH: Solar generation potential (in Wh), accounting for a system panel efficiency of 13% and that the kWh generation to kW capacity ratio was 1300<\/SPAN><\/SPAN><\/P>

    SystemCost: Estimated dollar value for system based on size, for Minnesota average per watt cost for solar panel & installation at $2.74; estimate assumed that only 75% of max system capacity was going to be installed per system, or for larger systems that economies of scale would provide per watt savings<\/SPAN><\/SPAN><\/P>

    CO2Avaoided_lbs: Estimated avoided CO2e emissions in lbs (from Xcel 2017 community energy reports, which estimates 802 lbs / MWh when solar replaces conventional grid)<\/SPAN><\/SPAN><\/P>

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