GHG Scope 2 (Market & Location)

Overview

The GHG Protocol Scope 2 Guidance is an amendment to the Corporate Standard that standardizes how organizations account for emissions from purchased or acquired electricity, steam, heat, and cooling. It requires companies to report scope 2 emissions using two methods, a location-based method that uses average grid emission factors and a market-based method that reflects contractual instruments such as renewable energy certificates and supplier-specific rates. The guidance sets eight quality criteria that contractual instruments must meet to be used in market-based accounting. Emissions are reported in metric tons of carbon dioxide equivalent, and the guidance does not create tradable credits.

Sources: methodology document · Greenhouse Gas Protocol

01 · Roles

The workflow as an explicit directed graph. In Graph each column is one role, so you can see who acts at each step; every node names the org.broadlistening.policy.block.* def it resolves to plus its input and output record. Data flow switches to a lineage view that makes explicit what data each node needs and makes, with dependency arcs tracing every record back to the node that produced it. Hover to trace, click to inspect; revise edges (dashed) send work back.

03 · Generated lexicon records

The records this methodology compiles to, ready to write to a PDS. The first tabs are the new policy engine records; the ★ claim.activity tab and those after it are reused ATProto Collective Funding Ecosystem records (org.hypercerts.*): the issued hypercert batch, its rights, an example verification attachment and a retirement receipt.

{
  "$type": "org.broadlistening.policy.methodology",
  "code": "GHG-S2",
  "name": "GHG Scope 2 (Market & Location)",
  "registry": "Greenhouse Gas Protocol (GHG)",
  "sector": "Electricity",
  "creditType": "inventory",
  "status": "active",
  "version": "1.0",
  "roles": [
    {
      "id": "registry",
      "name": "Programme Administrator",
      "permission": "Owns the protocol and approves reporters."
    },
    {
      "id": "reporter",
      "name": "Reporting Entity",
      "permission": "Defines the inventory boundary and reports activity data."
    },
    {
      "id": "verifier",
      "name": "Verification Body",
      "permission": "Provides limited or reasonable assurance over the inventory."
    }
  ],
  "schemas": [
    "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.broadlistening.policy.schema/ghg-scope2-inventory-boundary",
    "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.broadlistening.policy.schema/ghg-scope2-activity-data"
  ],
  "graph": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.broadlistening.policy.graph/ghg-scope2",
  "issuesAs": "org.hypercerts.claim.activity",
  "workScope": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.hypercerts.workscope.cel/ghg-scope2-scope",
  "rights": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.hypercerts.claim.rights/ghg-scope2-rights",
  "createdAt": "2025-01-01T00:00:00.000Z"
}

04 · Schemas

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