For Auditors
Comprehensive GHG Emissions Accounting
To achieve and maintain IWCA membership, a winery must regularly carry out Scopes 1, 2, and 3 greenhouse gas (GHG) emissions inventories of its operations.
To ensure a consistent high standard, we require that inventories be verified to the ISO-14064-1 standard.
IWCA works closely with ISO-14064-3 accredited and CDP accredited auditors to: ​​
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ensure a robust standard and consistency in GHG measurement and accounting.
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verify that wineries meet IWCA membership requirements and achieve consistent emissions reductions over time.
IWCA Resources & Documentation
IWCA Audit Summary Form
PURPOSE: To summarize an IWCA member or applicant member’s verified GHG inventory.
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The Audit Summary Form is to be filled out by ISO-14064-3 or CDP accredited auditors. The Form should be submitted to IWCA yearly (or every other year, depending on a winery’s size) to confirm that the winery meets IWCA membership requirements and is achieving ongoing emissions reductions.
Select List of Accredited Audit Firms
An IWCA winery must utilize an audit firm that is either ISO-14064-3 accredited (or CDP accredited as a solutions provider in CDP’s Greenhouse Gas Emissions Inventory services area) when seeking an ISO-14064-1 audit of its GHG emissions inventory.
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We have compiled a non-exhaustive list of firms that meet this standard. (Note: This does not represent IWCA's endorsement) To recommend a firm to be added to the list, please contact us.
GHG Emissions Inventory Guidance
PURPOSE: Outlines the protocols all IWCA members must follow when measuring their GHG emissions.
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IWCA's GHG Inventory Scopes Guidance Document outlines the categories of emissions that must be accounted for under a comprehensive Scopes 1, 2, and 3 inventory.
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