IMPERIAL ZERO INDEX METHODOLOGY AND DATA

The IZI 2025 Methodology document (PDF) sets out the technical specification for the IZI assessments, including the 2025 assessment when the methodology was introduced and the more recent IZI 2026 assessment. Used alongside the IZI 2026 data register, the methodology enables the reader to calculate the IZI metrics for any fossil fuel company (FFC).

Imperial Zero Index Metrics

IZI 2025 and 2026 evaluates all FFC’s consistently, applying the same criteria objectively and systematically providing a fair and uniform assessment of each entity’s progress toward achieving net zero objectives. To achieve this, we gather data from each company  to analyse the performance on each of the following metrics:

IZI Metrics IZI Sub Metrics

1. Commitment to Net Zero

 

1.1. Commitment to Net Zero by 2050 (Scope 1 & 2).

1.2. Applicable Scope 3.

2. Emission Reduction Targets

 

2.1. Long-term targets (2036 - 2050).

  2.1.1. Long-term reduction target by 2050 (Scope 1 & 2).

  2.1.2. Applicable Scope 3.

2.2. Medium-term targets (2027 - 2035).

  2.2.1. Medium-term reduction target by 2035 (Scope 1 & 2).

  2.2.2. Applicable Scope 3.

2.3. Short-term targets (to 2026).

  2.3.1. Short-term reduction target by 2026 (Scope 1 & 2).

  2.3.2. Applicable Scope 3.

3. Lobbying Position

3.1. Lobbying position.

4. Corporate Strategy

 

4.1. Exploration activities.

4.2. Production reduction.

4.3. Portfolio adjustment (type of energy delivered).

 

5. Finance

 

5.1. Financial commitments to support achievement of low-carbon R&D.

5.2. Low-carbon CAPEX budget allocation.

6. Operations

 

6.1. (Energy) Efficiency improvements.

6.2. Direct operational emissions (process, fugitive, and venting).

6.3. Flaring.

6.4. Carbon capture, utilization and storage.

7. Emissions & Reporting

 

7.1. Emission intensity.

7.2. Methane intensity.

7.3. Carbon offset reporting.