Castrol, one of the world’s leading lubricants brands, and Submer, an emerging leader for immersion cooling systems plan to collaborate on the global supply, standardization, and development of next generation immersion cooling fluids – fluids used to cool components of IT equipment by submerging computer components in a thermally conductive and dielectric liquid. The servers are cooled as a result and heat is transferred from the source to the liquid.

Immersion cooling can deliver more power in a smaller physical space than traditional air cooling – Submer

By combining Castrol’s thermal management expertise with Submer’s expertise in immersion cooling systems, the two organizations aim to achieve a multitude of benefits, particularly in enabling data centers to be managed in a more sustainable manner. With immersion cooling the water usage and the power consumption to operate and cool server equipment can be significantly reduced1.

Castrol’s parent company BP is also working with companies in key industrial sectors that have significant carbon emissions to manage, to help them to decarbonize by offering integrated energy solutions. This potentially opens additional opportunities for Castrol and Submer to explore integrated coolant and energy offerings, tailored to support data center customers to help them meet their sustainability goals.

“At Castrol, we aim to work with our customers to help deliver a more sustainable future, as set out in our PATH360 framework. This includes working with our commercial customers to help them save energy, waste and water," said BP vice president of advance mobility and industrial products, Rebecca Yates.

She continued: "Teaming up with Submer is a great example of how cooperation can help deliver more efficient operations and can bring about many opportunities for us to continue to deliver products that help save energy whilst delivering high-performance with increased efficiency.”

Daniel Pope, co-founder and CEO of Submer, emphasized the potential for immersion cooling technology in the data center to improve heat recovery and reuse for applications such as district heating schemes.

“At Submer, our stated mission is to enable sustainable digital infrastructures. There are two key drivers for needing a different medium other than air; there’s a technical one driven by the need to support future generations of high-density chips that can no longer be cooled by traditional means, and a sustainability driver, driven by the need to deliver more sustainable data centers with improved environmental performance.

"Thanks to immersion cooling we can run these digital infrastructures with considerably reduced energy and space typically required. Additionally, with heat recovery and reuse technology, we can turn them into highly efficient thermal power sources that can deliver hot water to neighboring organizations. All this is possible thanks to a liquid medium that both Castrol and Submer are experts in," said Pope.

The two organizations see great potential by combining Castrol’s global reach, service capabilities and thermal management expertise with Submer’s immersion cooling technology and know-how, enabling a differentiated offering to better serve customers with unique lifecycle and integrated cooling solutions.

Both companies have strong sustainability aims and can support the data center industry on its journey towards achieving more sustainable operations.

For more information about Submer, please visit

To find out more about Castrol please visit or contact [email protected]