Sasol Climate Change Report 2022 - Book - Page 29
INTRODUCTION
OUR FUTURE SASOL STRATEGY
RISKS AND OPPORTUNITIES
GOVERNANCE
DATA AND ASSURANCE
DECARBONISING OUR OPERATIONS (CONTINUED)
Progressing our emission-reduction roadmaps (continued)
REDUCE, TRANSFORM and SHIFT
Carbon Capture Utilisation and Storage (CCUS) technologies
Process and energy efficiency
Sasol is actively investigating CCUS technology. Although CCUS has not been built
into our 2030 Sasol Energy roadmap, foundational work is underway for our 2050
net zero ambition.
Sasol’s energy efficiency performance is reported monthly,
providing insights on our long-standing commitment to improve
energy efficiency as a key business driver and contributor to our
emission-reduction roadmap. A number of operational challenges
were experienced during 2022 as a result of poor coal quality and
gas availability at our Secunda and Sasolburg sites. This was
further influenced by a series of external power disruptions
which resulted in an overall energy efficiency regression against
the previous year. Our energy efficiency improvement from a
2005 baseline stands at 18,4% for the Group and 15,7% for Sasol
Energy against a 2022 target of 22%. We are however still on
track to meet our Energy Productivity 100 (EP100) 30% energy
improvement target by 2030.
We are exploring partnerships with Globeleq for sequestration of CO2 from gas-fired power plants
in Mozambique. The CGS is continuing with preparation for a pilot plant demonstration of CO2
sequestration in Mpumalanga, with contract planning for site construction, management,
injection and monitoring underway. Sasol R&T have been assisting CGS with wind and ground
water data and plan to supply existing geological subsurface mapping and baseline air dispersion
information. The first injection is planned for late 2025.
In 2022, we concluded an RFI to identify CCS opportunity developments for Lake Charles, for
advancement over the course of 2023. Also, our MoU with LOTTE Chemical, is looking to use our
CO2 from this facility as a primary raw material for production of battery-grade electrolyte solvents
for lithium-ion batteries in electric vehicles. Future captured CO2 from current operations will also
be used as a feedstock, resulting in reduced GHG emissions for the site and products suitable for
the energy transition. The development of both CCS and CCU projects is guided by the principle of
maximising value creation in concert with changes in the external environment to inform timing
of investment decisions, such as the United States government incentivising CCUS.
Carbon capture and storage flow scheme
CO2 source
CO2 capture plant
Injection facilities
Compression
Transport pipeline
Cap rock
Cap rock
Deep saline aquifer
Cap rock
Deep saline aquifer
CO2 injection
and storage
Depleted oil and gas fields
Cap rock
Sustainable carbon feedstocks
Securing sustainable carbon feedstocks is essential to fully
unlocking the FT PtL opportunity for Sasol. By progressively
incorporating sustainable carbon sources into our operations,
we will be able to gradually decrease our reliance on coal and
transition gas. Sources of sustainable carbon include biogenic,
recycled process CO2 from industrial sources and captured
atmospheric CO2. As the cost of DAC is currently not sufficiently
competitive for large-scale implementation, we are prioritising
biomass-derived carbon. Small quantities of biomass can
already be accommodated in our existing gasifiers, but we will
need a new set of gasifiers to utilise higher percentages.
Effectively sourcing biomass will require further collaboration
to achieve optimal land and water use, as well as address
logistical concerns. We are pursuing various opportunities for
partnerships and enterprise supplier development in this area.
We are also in discussions with potential partners to explore the
use of emissions from industrial sources that can be classified
as unavoidable carbon for our process to reduce emissions,
produce sustainable fuels and chemicals and pilot CCUS.
SASOL CLIMATE CHANGE REPORT 2022 28
Natref greening
opportunity
Through our partnership with
TotalEnergies, we are exploring
innovative pathways to potentially
transition the Natref refinery and
meet Clean Fuels II compliance by coprocessing crude oil with sustainable
feedstocks to reduce the refinery’s
scope 1 and 2 GHG emissions. We could
also reduce scope 3 emissions through
bio-ethanol fuel blending for the
market. Deeper decarbonisation
opportunities are also being explored,
such as biodiesel, SAF production
and renewable electricity integration.
This offers potential for critically
important benefits through unlocking
a stagnant bio-ethanol manufacturing
segment. Further information on these
opportunities will be provided in future
disclosures.
