The partners plan to scale and commercialize Honeywell's technologies, which use various wastes like fats, oils, greases, biomass and solids for chemical production and renewable fuels at Repsol’s refineries. Their goal is to produce different biofuels, including sustainable aviation fuel (SAF) and renewable diesel, while making use of existing refinery assets.

This collaboration, Honeywell commented, supports the alignment of its portfolio with the energy transition megatrend.

"As a global leader in sustainable fuel technologies, we seek collaborations to provide innovative solutions that help our customers and stakeholders to reduce carbon and greenhouse gas emissions through biofuel production." said Bryan Glover, chief growth officer and CTO of Honeywell.

Repsol is also analyzing the deployment of Honeywell's UpCycle Process Technology, which can recycle diverse plastics like colored, flexible, multilayered packaging and polystyrene. When used in conjunction with other chemical and mechanical recycling processes – along with improvements to collection and sorting – the technology has the potential to help create the capability to recycle nearly 90% of waste plastics, Honeywell said.

"Renewable fuels and plastics recycling are crucial to Repsol’s commitment to achieve net zero emissions by 2050,” said Berta Cabello, Repsol’s director of Renewable Fuels. “Our collaboration with Honeywell to advance and adopt cutting-edge technologies will help us reduce our carbon footprint and become a benchmark in renewable fuels and hydrogen production by 2030."

The two companies have already worked together in various areas such as licensing and development of petrochemical plants, catalysts, technical support and troubleshooting, digitalization and technology. In 2023, Repsol selected Honeywell’s Ecofining technology to make renewable fuels from sources like used cooking oil and waste animal fat at its plant in Puertollano, Spain.