Supply Chain Reference
11-industry cradle-to-grave lithium-ion battery supply chain with inter-industry carbon accounting.
Carbon Ledger Supply Chain
Click any node to view its emission profile. The main chain flows left-to-right from Mining to End-of-Life. The O&G branch merges into Battery Cell production. The green dashed edge shows the circular economy credit.
E-Ledger Double-Entry Accounting
Debit (Liability)
Carbon liabilities incurred from direct emissions or received via upstream transfers.
- DirectEmission: Scope 1/2 emissions recorded
- EmbeddedEmission: Upstream carbon debt received
Credit (Asset)
Carbon liabilities reduced through allocation to products or transfer to downstream.
- AllocationExecution: Shared emissions distributed to co-products
- ELedgerTransfer: Carbon liability sent downstream
Every E-Ledger maintains this invariant. A positive balance means the entity holds unrealized carbon liability.
Conservation Constraints
TransferBalanceMatch
Sender credit (kg CO2e) must exactly equal receiver debit (kg CO2e) for every inter-industry transfer.
ChainConservation
Total original debits across all origins must equal total final exits plus remaining inventory across the chain.
CircularCreditCap
End-of-life carbon credit returned to Chemical Refining must not exceed 15% of the original mining debt.