Excellium Pro Concentrate: TotalEnergies Angola Reduces the Carbon Footprint of Its Offshore Fleet

Between January and June 2024, five vessels from the TEEPA (TotalEnergies E&P Angola) fleet, three crewboats and two Platform Supply Vessels (PSVs), operating on blocks 17, 32, and at the port of Luanda, were selected to test the Excellium Pro Concentrate additive in their marine gas oil (MGO). The analysis, conducted by Opsealog, relied on more than 1,700 daily reports, comparing periods with and without the additive using a rigorous methodology and weekly monitoring. 

Excellium Pro Concentrate is a 100% organic, multifunctional additive designed to:  

• Optimize energy efficiency and engine protection
• Eliminate injector deposits and improve combustion
• Prevent wear, fuel degradation, water contamination, and corrosion 

Easy to implement, it offers a “quick win” for the fleet, with no negative impact on engines. 

The study quantified the following gains, extrapolated to an annual consumption of 80,000 tonnes of MGO for the TEPA fleet. 

During the test period, the fleet recorded an average reduction of 3.3% in MGO consumption, representing approximately USD 1.5 million in savings and 3,600 tonnes of CO₂ emissions avoided. For the crewboats, the consumption model confirmed an average benefit of 4.8% over a representative operational period. 

Beyond fuel savings, the use of Excellium Pro Concentrate contributes to: 

• Reducing greenhouse gas emissions
• Lowering maintenance costs and frequency thanks to cleaner engines
• Enhancing the reliability and performance of vessels, even under demanding operational conditions 

This project is fully aligned with TotalEnergies’ multi-energy strategy and commitment to more sustainable and responsible energy, providing innovative and measurable solutions to its maritime sector clients. 

The experience in Angola demonstrates that adding Excellium Pro Concentrate to marine fuel is an effective, rapidly deployable solution that generates value both economically and environmentally. TotalEnergies Additives & Fuels Solutions thus confirms its ability to support the energy transition in maritime transport, in Africa and beyond.