Chapter 7: Carbon Accounting Integration

Three Scopes of Emissions

Scope 1 - Direct Emissions:

• Emissions from sources owned/controlled by the company
• Examples: Company vehicles, on-site combustion, industrial processes
• Full control, relatively easy to measure

Scope 2 - Indirect Energy Emissions:

• Emissions from purchased electricity, steam, heating, cooling
• Occur at power plant, not company facility
• Two calculation methods: Location-based, Market-based (with RECs)

Scope 3 - Value Chain Emissions:

• All other indirect emissions (upstream and downstream)
• 15 categories: Purchased goods, business travel, employee commuting, use of sold products, etc.
• In many sectors, the largest share of the total footprint
• Most challenging to measure

Cradle-to-Grave Carbon Accounting

Phases of LCA:

1. Goal & Scope Definition: Define functional unit, system boundaries
2. Inventory Analysis: Collect data on inputs/outputs for each process
3. Impact Assessment: Convert inventory to environmental impacts (GWP, acidification, etc.)
4. Interpretation: Identify hotspots, compare alternatives

LCA Databases:

• ecoinvent: Large-scale LCI datasets, global coverage
• GaBi (now Sphera LCA databases): Industry-specific data, esp. chemicals and materials
• USEEIO: US-specific input-output model
• Agri-footprint: Agricultural products

WIA-ENE-051 Product Carbon Footprint API

// Calculate product carbon footprint
const pcf = await wia.carbon.productFootprint({
  product: {
    name: 'Electric Vehicle Battery Pack',
    mass: 450, // kg
    lifetime: 200000, // km
  },
  lifecycle: {
    materials: {
      lithium: {amount: 8, unit: 'kg', source: 'Australia'},
      cobalt: {amount: 6, unit: 'kg', source: 'DRC'},
      nickel: {amount: 40, unit: 'kg', source: 'Indonesia'}
      // ... other materials
    },
    manufacturing: {
      location: 'Germany',
      energy: {
        electricity: {amount: 2500, unit: 'kWh', grid: 'DE_2024'}
      }
    },
    transport: {
      shipping: {distance: 8000, mode: 'container_ship'},
      trucking: {distance: 500, mode: 'diesel_truck'}
    },
    use_phase: {
      efficiency: 6.5, // km/kWh
      grid_emission: 0.4 // kg CO2/kWh average over lifetime
    },
    end_of_life: {
      recycling_rate: 0.95,
      recycling_credit: true
    }
  }
});

console.log('Total CFP:', pcf.total_kgCO2e);
console.log('Per km:', pcf.per_functional_unit);
console.log('Breakdown:', pcf.lifecycle_breakdown);
// Example output format (hypothetical values)
// {
//   materials: 3200 kg CO2e,
//   manufacturing: 1800 kg CO2e,
//   transport: 400 kg CO2e,
//   use_phase: 12000 kg CO2e,
//   end_of_life: -500 kg CO2e (credit),
//   total: 16900 kg CO2e
// }

Carbon Credit Standards

Major Registries:

• Verra (VCS): Largest registry, diverse project types
• Gold Standard: Focus on sustainable development co-benefits
• American Carbon Registry (ACR): Forest and agriculture projects
• Climate Action Reserve (CAR): North American focus

Credit Quality Criteria:

• Additionality: Would not have happened without carbon finance
• Permanence: Emission reductions are long-lasting (esp. forestry)
• Leakage: No displacement of emissions elsewhere
• Verification: Third-party validated and verified
• No Double Counting: Unique serial number, retired upon use

Project Development Cycle

1. Project Design: Develop Project Design Document (PDD), select methodology
2. Validation: Independent third-party validates project against standard
3. Registration: Registry approves project, issues unique ID
4. Implementation: Execute project activities
5. Monitoring: Collect data per monitoring plan
6. Verification: Independent audit of emission reductions claimed
7. Issuance: Registry issues carbon credits (VCUs, CERs, etc.)
8. Retirement: Buyer retires credits against their footprint

Digitizing Carbon Markets

Benefits:

• Transparent registry: All transactions on-chain
• No double-counting: Cryptographic uniqueness
• Fractional ownership: Trade fractions of tonnes
• Automated retirement: Smart contracts execute upon use
• Programmable rules: Embed quality criteria in code

// WIA-ENE-051 carbon credit tokenization
const tokenizedCredit = await wia.carbon.tokenize({
  project: {
    id: 'VCS-1234',
    name: 'Amazon Rainforest Conservation',
    type: 'REDD+',
    location: 'Brazil',
    vintage: 2024
  },
  credits: {
    amount: 10000, // tonnes CO2e
    verifier: 'did:wia:verifier:123',  // specification Phase 4 §6.2 format
    verification_date: '2024-12-01'
  },
  metadata: {
    additionality: 'demonstrated',
    permanence: '100 years',
    co_benefits: ['biodiversity', 'indigenous_livelihoods']
  }
});

// Credits issued as NFTs on blockchain
console.log('Token contract:', tokenizedCredit.contract_address);
console.log('Token IDs:', tokenizedCredit.token_ids);

// Transfer ownership
await wia.carbon.transfer({
  from: '0xSellerAddress',
  to: '0xBuyerAddress',
  amount: 500, // tonnes
  price: 15 // USD/tonne
});

// Retire credits
await wia.carbon.retire({
  token_ids: [1001, 1002],
  beneficiary: 'ACME Corporation',
  purpose: 'Offset 2024 Scope 3 emissions',
  proof: 'ipfs://...'
});

Corporate Carbon Pricing Strategies

Shadow Price:

• Theoretical price used in investment decisions
• Not actual cash flow
• Example: $50/tonne hurdle for capital projects
• Drives low-carbon technology adoption

Internal Carbon Fee:

• Business units charged real fee for emissions
• Revenue funds emission reduction projects
• Creates financial accountability
• Example: Charge business units a fixed amount per tonne of emissions to build an internal reduction fund

Implicit Price:

• Derived from cost of abatement measures undertaken
• Calculated post-hoc from spending on emission reductions

TCFD Framework (now the foundation of ISSB IFRS S2)

Four Pillars:

• Governance: Board oversight of climate risks
• Strategy: Climate risks/opportunities impact on business
• Risk Management: Processes to identify and manage climate risks
• Metrics & Targets: Scope 1,2,3 emissions, climate targets

Scenario Analysis:

• 1.5°C scenario: Rapid transition, high carbon prices, stranded assets
• 2°C scenario: Moderate transition
• 3-4°C scenario: Physical risks dominate (floods, heat, storms)

WIA-ENE-051 Supply Chain Traceability

// Track emissions through supply chain
// PCF values below are hypothetical, for illustration only
const supplyChain = wia.carbon.supplyChain({
  product: 'Laptop Computer',
  components: [
    {
      part: 'CPU',
      supplier: 'Supplier A',
      pcf: 5.2, // kg CO2e
      data_quality: 'primary_supplier_data'
    },
    {
      part: 'SSD',
      supplier: 'Supplier B',
      pcf: 3.8,
      data_quality: 'primary_supplier_data'
    },
    {
      part: 'Display',
      supplier: 'Supplier C',
      pcf: 12.1,
      data_quality: 'primary_supplier_data'
    },
    {
      part: 'Aluminum chassis',
      supplier: 'Unknown (3rd-tier supplier)',
      pcf: null, // Use industry average
      data_quality: 'industry_average',
      mass: 1.2, // kg
      material: 'aluminum'
    }
  ],
  assembly: {
    location: 'China',
    energy: 8.5, // kWh per unit
    grid_factor: 0.55 // kg CO2/kWh
  },
  transport: {
    mode: 'container_ship',
    distance: 12000 // km to distribution center
  }
});

console.log('Total product carbon footprint:', supplyChain.total_kgCO2e);
console.log('Scope 3 category 1:', supplyChain.scope3_cat1);
console.log('Data quality score:', supplyChain.quality_score);
// Quality degrades with use of industry averages vs. primary data

EU Digital Product Passport (DPP)

Requirements (phased in under the Ecodesign for Sustainable Products Regulation (ESPR), starting with batteries in 2027):

• Product carbon footprint
• Recycled content percentage
• Repairability score
• Expected lifetime
• End-of-life instructions

Implementation:

• QR code or NFC tag on product
• Links to product data in decentralized data storage (blockchain is an optional means of implementation)
• Accessible to consumers and regulators
• Enables circular economy tracking

Emissions Reduction Hierarchy

1. Avoid: Eliminate unnecessary emissions (e.g., reduce travel)
2. Reduce: Decrease emissions intensity (e.g., energy efficiency)
3. Replace: Switch to low-carbon alternatives (e.g., renewables)
4. Compensate: Offset remaining emissions (carbon credits)

SBTi rule: Carbon credits (offsets) do not count toward achieving reduction targets. Residual emissions remaining after the long-term target is met (up to 10% of base-year emissions) must be neutralized through carbon removal

End-to-End Carbon Accounting Workflow

// 1. Measure corporate footprint
const footprint = await wia.carbon.measureFootprint({
  organization: 'ACME Corporation',
  year: 2024,
  scopes: [1, 2, 3],
  boundaries: 'operational_control',
  data_sources: {
    scope1: 'facility_meters',
    scope2: 'utility_bills',
    scope3: ['spend_analysis', 'supplier_data']
  }
});

// 2. Set science-based target
const target = wia.carbon.setSBT({
  base_year: 2020,
  target_year: 2030,
  scope_1_2_reduction: 0.50, // 50%
  scope_3_reduction: 0.30,
  method: '1.5C_aligned'
});

// 3. Track progress
const progress = wia.carbon.trackProgress({
  current: footprint,
  target: target,
  trajectory: 'linear'
});

// 4. Secure removal credits to neutralize residual emissions (not counted as SBTi reductions)
const credits = await wia.carbon.purchaseCredits({
  amount: progress.residual_emissions,
  preferences: {
    project_type: ['DAC', 'afforestation'],
    vintage: 2024,
    co_benefits: ['biodiversity'],
    max_price: 100 // USD/tonne
  }
});

// 5. Generate disclosure report
const disclosure = wia.carbon.generateDisclosure({
  framework: ['TCFD', 'CSRD', 'CDP'],
  assurance_level: 'limited',
  include_scenario_analysis: true
});

console.log('2024 Emissions:', footprint.total_tCO2e);
console.log('Target progress:', progress.percent_to_target);
console.log('Credits purchased:', credits.total_tCO2e);
console.log('Disclosure ready:', disclosure.file_urls);