Cat 1: Purchased goods (materials)
Materials
Lanyards, signage, printed programmes, AV hire embodied.
Category total
1662.01893.0 kgCO₂e2124.0
5.3% of event
4 emission lines · click any row for full lineage
Lines
| Activity | Factor | kgCO₂e | Approver |
|---|---|---|---|
Attendee lanyards + badges 460 lanyards · PET + paper insert | Estimateillustrative | 140 | Anya RoySenior carbon accountant |
Event signage + banners (branded vinyl) 84 m²-equiv (printed vinyl and rigid boards) | Estimateillustrative | 521 | Anya RoySenior carbon accountant |
Printed programmes + handouts 460 programmes · 24pp coated stock | Estimateillustrative | 340 | Anya RoySenior carbon accountant |
AV hire, embodied share (LED wall + sound rig) 1/7 lifetime share of one event-day usage | Estimateillustrative | 892 | Sam WhitakerLead carbon accountant |
| Category total | 1,893 |
Where the uncertainty lives
The largest σ contribution in this category is av hire, embodied share (led wall + sound rig) (76.6% of the category's variance). It carries most of the band because the embodied-emissions factor for hired AV kit is amortised over a 1/7 lifetime share; DEFRA publishes no factor for hired electronics, so this is an estimate, and the lifetime assumption itself carries factor-σ that activity data cannot tighten. Reduction levers that move this line (booth materials reuse pool) will tighten the band the most.