GHG Protocol implementation roadmap. INVENTORY PROCESS (annual cycle): (1) DEFINE GOAL + AUDIENCE - business goals + stakeholders + reporting standards; (2) SET BOUNDARIES - organisational (equity/financial/operational control) + operational (Scope 1/2/3); (3) IDENTIFY EMISSION SOURCES - all activities + sources per scope + category; (4) COLLECT ACTIVITY DATA - fuel consumption + electricity + travel + procurement + waste + commuting + investments + etc.; (5) SELECT EMISSION FACTORS - IPCC + EPA + EEA + national + supplier-specific + REC/GoO + LCA databases (ecoinvent + GaBi + Sphera); (6) CALCULATE EMISSIONS - tCO2e via activity x factor x GWP; (7) QUALITY ASSURANCE - data quality assessment + uncertainty + internal review; (8) DOCUMENT + REPORT - inventory report + emissions statement + base year + recalculation + assurance; (9) VERIFY - external limited or reasonable assurance; (10) DISCLOSE - sustainability/integrated/climate report + CDP + CSRD/ESRS E1 + ISSB; (11) SET TARGETS - SBTi-aligned reductions + net-zero. ORGANIZATIONAL ROLES: (a) CHIEF SUSTAINABILITY OFFICER (CSO) or VP Sustainability - strategic ownership; (b) GHG INVENTORY MANAGER - operational lead; (c) DATA STEWARDS in operations + procurement + facilities + finance; (d) EXTERNAL VERIFIER engagement; (e) CDP + CSRD + ISSB submission leads. TOOLING: (a) inventory platforms (Watershed + Persefoni + Sweep + Salesforce Net Zero Cloud + Microsoft Sustainability Manager + SAP Green Ledger + Workiva + Greenly + others); (b) LCA databases + emission factor libraries; (c) supplier engagement platforms (CDP Supply Chain + EcoVadis + Schneider Sustainability Hub); (d) assurance platforms. METRICS: tCO2e absolute + intensity + reduction vs base year + Scope 3 coverage + data quality scores + assurance level + SBTi alignment + CDP score.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.