On 15 March 2024 SONI and EirGrid published a consultation paper on proposals for the design of the day-ahead system services auction (DASSA), which may be found here: https://www.soni.ltd.uk/media/documents/FASS-DASSA-Consultation-Paper-M… The enclosed document summarises the TSOs' proposals and questions set out in the consultation paper. The consultation period is open. Responses to the questions set out in the paper should be submitted through either the SONI or EirGrid portal by 10 May 2024.