Assessment Guide · 1 Page · 30 Categories · Updated 2026
The Only Emissions Factor
Reference You Need
EPA + DEFRA factors for the 30 most common manufacturer spend categories. One page. Bookmarkable.
Steel & Iron Products
0.355
0.441
5000-5099
NAICS 3311 · Scope 3 Cat 1
Aluminum & Non-Ferrous Metals
0.520
0.612
5000-5099
High embodied energy
Plastics & Polymers (raw)
0.450
0.538
5100-5199
Petroleum-based · Cat 1
— RAW MATERIALS
Natural Gas (stationary)
0.0053
0.0041
4100-4199
per therm · Scope 1
Electricity (US grid avg)
0.417
0.128
4100-4199
per kWh · eGRID · Scope 2
— ENERGY
Trucking / LTL Freight
0.162
0.203
4400-4499
per ton-mile · Scope 3 Cat 4
Ocean Freight (container)
0.016
0.020
4500-4599
IMO 2024 · Scope 3 Cat 4
— TRANSPORTATION
Corrugated & Paper Packaging
0.240
0.300
5300-5399
Scope 3 Cat 1
— PACKAGING · WASTE · SERVICES
Business Travel — Air
0.255
0.319
6000-6099
per passenger-mi · Scope 3 Cat 6
Professional Services
0.160
0.200
6100-6199
legal / consulting · Cat 1
+ 20 more categories in the PDF →