As part of the ongoing work to develop Future Arrangements for System Services, EirGrid and SONI held a webinar on April 16th to provide information to industry on the Joint Options Assessment conducted between the TSOs and Regulatory Authorities, and the resulting proposal for the DASSA Top-Up Mechanism, known as the Residual Availability Determination (RAD), a consultation on which is currently open. The TSOs have today published the content presented during the webinar, including the questions submitted by industry both in advance of and during the session, along with the TSOs' responses. Responses to the questions set out in the DASSA Top-Up Mechanism consultation should be submitted through either the EirGrid or the SONI portal, by May 2nd.