CNC Report 08.26.24 8.5x11 - Flipbook - Page 109
timeline tool.
conventional growth
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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.
comprehensive carbon neutral corridor
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: +378 000 sf net collector area
Total: 318,000 metric tons CO2-eq. g 46% 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 69% reduction
2000 trees
• An additional 1,363 trees assumed to be planted: total of 2,000 trees
Total: 159,000 metric tons CO2-eq. g 73% 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 85% reduction
CASE STUDY TOWARD A CARBON NEUTRAL CORRIDOR
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