Integrate FY 24/25 Safeguard Mechanism data

[aethr]

The motivation

The latest Safeguard Mechanism datasets covering FY 2024/25 were released last week (2026/04/15). The 24/25 dataset needs to be integrated into the prior so that it can be used for prior runs where the period of interest falls within that financial year.

The proposed solution

Integrating the new dataset includes a number of tasks.

Fetch and parse the emissions file

The SGM Baselines and Emissions table is the dataset which contains methane emissions for specific facilities. Previously only FY 2023/24 dataset included methane emissions, but with the publication of FY 2024/25, we have two files available.

• Determine which baselines table to fetch based on the period of interest
  • if FY 2024/45, fetch the new file: https://cer.gov.au/document/baselines-and-emissions-table-2024-25
• Ensure the format of the new baselines file is compatible
• Ensure the new baselines file uses the same GWP emission factors

Locate any new facilities

The FY 2024/25 Safeguard Mechanism may include new or updated facilities. If so, these need to be examined and located.

• Review FY 2024/25 data to identify new facility names
• If any facility has changed name, determine a strategy for handling this
• Add locations of new coal mining facilities
• Add locations of new oil and gas facilities

Alternatives

It's worth considering an approach where all available Safeguard baselines are fetched and combined into a single resource (DataFrame) before isolating which rows to use based on the period of interest. A combined Safeguard dataset may be useful to downstream consumers (ie, openmethane-web) or for holistic analysis.

Additional context