Sasol Climate Change Report 2023 - Book - Page 14
INTRODUCTION
TRANSFORMING FOR RESILIENCE
GOVERNANCE
CLIMATE ADVOCACY AND POLICY
DATA AND ASSURANCE
IMPROVING OUR EMISSIONS REPORTING
SASOL ENERGY
SASOL CHEMICALS
Managing methane emissions from our Mozambique Operations
In 2022, we reported how, since COP26, we had undertaken
a review of our methane emissions, focusing on
Mozambique (see our 2022 CCR ). The scope of this
review included mapping potential sources and the
development of a baseline measurement approach for
additional emitting activities.
Eurasian operations baseline
Emissions from our Mozambique Operations represent
~1% of total Group GHG emissions. In 2023, these
operations emitted ~842 ktCO2e, of which methane
represented 17 kt (equivalent to ~391 ktCO2e) – excluding
the Pande-4 well.
• Pande-4, a non-operational well we inherited from
a previous operator, which suffered a catastrophic
blow-out almost six decades ago.
Management at the CPF is actively investigating ways to
manage, measure and reduce the facility’s emissions. Its
approach entails collaborating with the Oil & Gas Methane
Partnership 2.0 (OGMP 2.0), a multi-stakeholder initiative
launched by the United Nations Environment Programme
and the Climate and Clean Air Coalition. The OGMP 2.0 is
the only comprehensive measurement-based reporting
framework for the oil and gas industry to ensure the
accuracy and transparency of methane-emissions
reporting.
For a detailed breakdown of Mozambique’s emissions,
refer to pages 69 – 70 in this report.
Our Mozambique team is extending the company’s GHG
tracking and management system to record and report
We categorised our Mozambique Operations’ two main
methane sources as follows:
• In-country operations (including our operating wells,
pipelines to the Central Processing Facility (CPF) in
Temane and the CPF itself); and
emissions from all five sources – venting, flaring,
fugitive emissions, combustion and 'other smaller'
sources.
Various process and technology interventions are being
implemented or are under consideration to obtain
direct, real-time measurements or estimations of
emissions. This will enable operational staff to deploy
resources effectively to capture methane and other
hydrocarbons, as well as apply inherent emissionreducing design principles into current and new
facilities.
We expect that these initiatives will contribute to
Mozambique Operations reducing emissions over
time.
SASOL’S GHG WORKING GROUP
PANDE-4 UPDATE //
Transparency, continuous improvement
and mandatory reporting
The Pande-4 area continues to be monitored and managed. This work includes security, community
liaison and extensive data gathering. Evaluations and assessments have been carried out to
establish an accurate emissions baseline and evaluate possible interventions to mitigate the release
of emissions. Recent data indicates that Pande-4 remains in a stable condition, albeit with small
volumes of continuous releases.
As part of ongoing monitoring, 27 satellite surveys had
been acquired through the GHGSat satellite up to
April 2023, at a frequency of two surveys per month.
These surveys indicate the ongoing release of ~37 tpd of
methane. This is equivalent to ~310 ktpa CO2e, closer to
the top end of the range that was disclosed in 2022. To
improve the accuracy of the satellite methane emission
estimations, a local weather station is being installed in
Pande. The weather station will allow better calibration
and interpretation of the satellite data.
Additionally, interferometric synthetic aperture radar
satellite (InSAR) monitoring of surface deformation was
completed over producing fields. Further incorporation
of this data into the subsurface models is ongoing.
Biannual hydrocarbon and environmental sampling also
continues to be carried out. This includes localised air,
soil vapour and water sampling. The results at Pande-4
The emissions baseline for our Eurasian
Operations increased by ~27 ktpa CO2e,
attributed to improved GHG accounting
methodologies, which added ~87 ktpa CO2e
to the baseline. The majority of this was
offset by the sale of the Hamburg Wax facility
in 2022 (~60 ktpa CO2e). The net increase in
emissions is being mitigated by the
identification of reduction projects over and
above those committed to in the emissionreduction roadmap. These levers could
include expanding existing mitigation
projects, or selecting new projects based
on mitigation potential and cost.
Data integrity and ensuring we are sufficiently
ready for international mandatory climaterelated reporting are of utmost importance to
Sasol. To this end, in 2023, we established a
multi-disciplinary GHG Working Group.
indicated variable results as before, with no clear trends
or obvious emission points.
The group, which includes representatives
from the Risk, Climate Change and other
functions, as well as Sasol Energy, Mining and
Chemicals, meets six times a year to identify
GHG data, governance and reporting issues to
help our businesses resolve these issues.
Outputs include data definitions, defined
methodologies, procedures and Group-wide
policies. Outcomes are also fed into Sasol’s
Non-financial Data Working Group and the
Climate Change Working Group.
We continue to engage with specialist companies and
academics to develop a better understanding of the
Pande-4 emission source and the underlying mechanics.
Progress has been made on constructing a geological
and flow model for the Pande-4 area, which will provide
a framework for interpreting the data and to investigate
potential mitigation options. Pande-4 is a unique,
complex problem and further work (as is currently being
undertaken) is required to fully understand the gas
migration pathways to the surface and determine the
feasibility of stopping the emissions. Further assessments
will be carried out in 2024 after the current data
gathering and modelling phase is completed, to
determine if effective and efficient interventions to
mitigate the emissions are feasible.
This year, Sasol has been focusing on the
development of an internal recalculation
policy to ensure comparability of current GHG
emissions inventories with the base year and
historical emissions.
Pande-4 area, Inhambane, Mozambique
SASOL CLIMATE CHANGE REPORT 2023
13