The Basics of Greenhouse Gas Emissions Inventories Mary Sotos World Resources Institute VEPGA Annual Meeting April 23, 2010

The Basics of Greenhouse Gas Emissions Inventories

Mary SotosWorld Resources InstituteVEPGA Annual MeetingApril 23, 2010

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Why GHG Inventories?

- Climate impact

- Demonstrate leadership

- Gain expertise for policy-making

- Prepare for the future

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Why WRI?

- Internationally-accepted standards

- Mission is to provide standards, tools, resources

- Partnerships with other programs

- New Public Sector Protocol

Definition

• Quantified amount of gases released as part of your operations as an organization for a specific time period– Six Kyoto gases: CO2, CH4, N2O, PFC, HFC, SF6– Direct and Indirect

• Largely extension of energy use– Define your entity– Categorize emissions

Collect Data

Calculate emissions

Develop

Assign resources

Design GHG inventory

Plan

Set Target

Reduce Emissions Manage

Report Results

Organizational InventoriesCompany/ Agency/Department

Geographic Inventories Nation/ State/County/City

-Top-Down

- Broad policies

- Aligns with point-source

regulation

- Bottom-up

- Apply “consolidation

approach”

- Indirect emissions

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Financial Control

- Balance sheet?- Set financial policies?

Operational Control

- Operating license?- Set operating policies?

Organizational Boundaries

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Categorize emissions

• DIRECT– Scope 1:

• Fuel combustion, process emissions, fugitive emissions (HVAC)

• INDIRECT– Scope 2:

• Purchased electricity, heat/steam/cooling

– Scope 3:• All other indirect emissions upstream/

downstream

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Data Sources

• Scope 1:• Fuel records, purchase invoices, vehicle mileage

• Scope 2: • Utility bills

• Scope 3:• Employee commuting & business travel miles• Industry association information• Procurement

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User supplied data GHG emissions (tonnes)

Source ID Sector

Fuel type (e.g., solid fossil) Fuel

Amount of fuel

Units (e.g., kg or kWh)

Heating value basis CO2 CH4 N2O

All GHGs (tonnes CO2e)

-Cross-Sector and Sector-Specific

-Emission factors by country or region (or user-supplied)

- Free to download

WRI’s Calculation Tools

EPA Climate Leaders

GuidanceCCAR

Reporting Protocol

WBCSD/WRI GHG Protocol

The Climate Registry Protocol

Public Sector Standard

ISO 14064 Standards

Other Programs

Collect Data

Calculate emissions

Develop

Assign resources

Design GHG inventory

Plan

Set Target

Reduce Emissions Manage

Report Results

Resources and Contacts

• Corporate Standard and Public Sector Protocol

• http://www.ghgprotocol.org/psp

• Calculation Tools

• http://www.ghgprotocol.org/calculation-tools/all-tools

• Mary Sotos, [email protected]

http://www.ghgprotocol.org/psp

http://www.ghgprotocol.org/calculation-tools/all-tools

http://www.ghgprotocol.org/calculation-tools/all-tools

mailto:[email protected]

What Gets Measured Gets Managed

Documents

The Basics of Greenhouse Gas Emissions Inventories Mary Sotos World Resources Institute VEPGA Annual Meeting April 23, 2010