The proposed scope under consideration comprises three principal areas: Cryogenic Plant; Cryogenic Distribution System; and Cryogenic User Integration. The STEP cryogenic system is intended to provide the cryogenic cooling infrastructure required to support major plant systems throughout the STEP Prototype Powerplant. Current concepts indicate that the system will comprise a large-scale cryogenic plant, an extensive cryogenic distribution network and integration with multiple cryogenic users across the programme. The system is expected to provide refrigeration across a range of temperature levels, including approximately 80 K, 20 K and 4.5 K, using a combination of helium, hydrogen and nitrogen as cryogenic fluids. The cryogenic system is expected to deliver approximately 65 kWth of cooling at 4.5 K equivalent. The refrigeration load is comprised of approximately 520 kWth at 80 K, 170 kWth at 20 K, and 8 kWth at 4.5 K. For more information about this opportunity, please visit the eSourcing portal at: https://ukfe.delta-esourcing.com/tenders/UK-UK-Abingdon:-Heat-exchange-units-and-machinery-for-liquefying-air-or-other-gases./3DSBJT2RU2 To respond to this opportunity, please click here: https://ukfe.delta-esourcing.com/respond/3DSBJT2RU2

Procurement Act 2023

To respond to this PMEN, please complete and submit Appendix 1 responses via the e-portal by 14:00 on Friday 13th November 2026. Early responses would be appreciated to help inform planning decisions. If you experience any difficulties with the portal, please contact the portal helpdesk [email protected] cc [email protected] and [email protected] Information obtained from responses to Appendix 1 – responses will help UKFE understand current market capabilities and shape the scope, direction, and design of the future procurement activities.