Net CO2 transferred to geologic reservoirs by custody transfer point
Measurement answer
What this metric measures
Net CO2 quantity transferred into a geologic reservoir, reported by custody transfer point.
Specification
Metric specification
- Result format
- Single value
- Unit
- tonnes CO2 — source-defined reporting unit
- Reporting basis
- Reporting period
- Aggregation
- Reported separately for each custody transfer point; net CO2 quantity transferred into the geologic reservoir
- Pillar
- Environmental
- Topic
- Technological removals and geologic storage
- Controlled domain
- Climate and greenhouse gases
- Entity type
- Metric
Reporting boundary
CO2 transferred into geologic reservoirs at each custody transfer point, including inputs and outputs at that custody point
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Measurement AuthoritySource evidence
GHG Protocol
- Publisher
- GHG Protocol
- Edition
- Version 1.1, published 30 June 2026; effective 1 January 2027
- Requirement
- Not Specified
- Relationship
- Defines Measurement
- Mapping outcome
- Direct Evidence
- Source locator
- Page 86, section 14.3, “CO2 custody transfer disclosure recommendation”
- Measurement Authorityf6202e2223a4a6ee008f
GHG Protocol
- Publisher
- GHG Protocol
- Edition
- Version 1.1, published 30 June 2026; effective 1 January 2027
- Requirement
- Not Specified
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- page 86, section 14.3, “CO2 custody transfer disclosure recommendation” | Page 86, section 14.3, “CO2 custody transfer disclosure recommendation”
Value structure
Dimensions and units
- Unit
- tonnes CO2 — source-defined reporting unit
- Reporting basis
- Reporting period
Unit meaning: Values use tonnes CO2 under the disclosed Land Sector and Removals method, period and boundary.
Table fields and units
- custody transfer point
- geologic reservoir
- CO2 inputs (tonnes CO2)
- CO2 outputs (tonnes CO2)
- CO2-stream composition adjustment (tonnes CO2), where applicable
- net CO2 transferred (tonnes CO2)
Published dimensions
- custody transfer point
- geologic reservoir
- spatial boundary
- CO2-stream composition
- traceability level
- storage pool
Calculation method
Formula information
- Status
- Specified
- Formula type
- Difference
Formula
N_t = I_t - O_t + A_tApply the source-defined Land Sector and Removals method only within the disclosed boundary and with compatible inputs. The source explicitly recommends disclosure of a net quantity at each custody point, supplies the unit, defines the transfer boundary, and specifies a calculation based on inputs, outputs, and composition adjustments. It is a standalone structured storage-transfer reporting metric and remains distinct from atmospheric removals and GHG credits.
Variables
| Symbol | Variable | Definition | Unit |
|---|---|---|---|
N_t | Net CO2 transferred | Net quantity of CO2 transferred into the geologic reservoir at custody transfer point t. | tonnes CO2 |
I_t | CO2 inputs | CO2 quantity entering the custody transfer point or reservoir-transfer boundary. | tonnes CO2 |
O_t | CO2 outputs | CO2 quantity leaving the custody transfer point or reservoir-transfer boundary. | tonnes CO2 |
A_t | CO2-stream composition adjustment | Adjustment for changes in CO2-stream composition, where applicable. | tonnes CO2 |
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 27 August 2026
Land Sector and Removals Standard
- Publisher
- GHG Protocol
- Edition
- Version 1.1, published 30 June 2026; effective 1 January 2027
- Locator
- Page 86, section 14.3, “CO2 custody transfer disclosure recommendation”
Supports: The official GHG Protocol source supports the identity, boundary and method basis of “Net CO2 transferred to geologic reservoirs by custody transfer point”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: Land Sector and Removals Standard, Version 1.1, published 30 June 2026; effective 1 January 2027.
- Disclose CO2 inputs and outputs used to calculate the net quantity at each custody transfer point.
- Describe any adjustment for changes in CO2-stream composition where applicable.
- Identify the custody transfer point and associated geologic reservoir boundary.
Record-specific limitations
- This is a recommended custody-transfer disclosure rather than a gross physical GHG inventory total.
- The net transferred quantity must not be treated as equivalent to atmospheric removal, GHG-credit-adjusted value, avoided emissions, or GHG credits.
- Changes in CO2-stream composition must be reflected where applicable.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.