CNC Report 08.26.24 8.5x11 - Flipbook - Page 133
base case
• Existing buildings included, but not retrofitted: EUI based on benchmark numbers for
Tennessee
• New buildings with only moderate efficiency improvements regarding operational carbon
compared to existing buildings: EUI of new buildings is reduced by 25% compared to
existing ones, EUI of retrofits is reduced by 15% compared to existing state
• Medium embodied carbon emissions for new construction assumed: range of 70-100
lbs-CO2/sf GFA depending on type of building (residential, office, retail or parking)
• No PV (photo-voltaic) panels assumed to be installed
•Transportation assumed as car-centric: 15 000 miles/pers-yr dominated by ICE (internal
combustion engine) vehicles
• Only 262 additional trees added to streetscape: total of 637 trees
Total: 593,000 metric tons CO2-eq.
lower EUI
• Existing buildings unchanged
• New buildings and retrofits with strong EUI reduction: 65% reduction of new buildings
compared to existing, 55% reduction of retrofits compared to existing
Total: 546,000 metric tons CO2-eq. g 8% reduction
lower EC
• New buildings with significant lower embodied carbon (EC) for new construction:
range of 50-75 lbs-CO2/sf GFA depending on type of building (residential, office, retail or
parking)
Total: 531,000 metric tons CO2-eq. g 10% reduction
rooftop PV
• PV added on all building rooftops (existing + new), covering 60% of each roof:
+879, 000 sf net collector area
Total: 376,000 metric tons CO2-eq. g 37% reduction
parking lot PV
• PV canopies added on 60% of parking lots assigned to buildings (non-street):
+378,000 sf net collector area
Total: 318,000 metric tons CO2-eq. g 48% reduction
better transport
• Transportation from car-centric to person-centric: 8 750 miles/pers-yr dominated by EV
instead of 15 000 miles/pers-yr dominated by ICE
Total: 182,000 metric tons CO2-eq. g 71% reduction
2000 trees
• An additional 1363 trees assumed to be planted: total of 2000 trees
Total: 159,000 metric tons CO2-eq. g 75% reduction
retrofit all
• All existing buildings assumed to be retrofitted as well: 55% EUI reduction of retrofits
compared to existing
Total: 90,000 metric tons CO2-eq. g 87% reduction
APPENDIX TOWARD A CARBON NEUTRAL CORRIDOR
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