P315 files are available for download via FTP to all ELEXON Portal accounts that have a participant ID associated with their account or have licensed P315 data from ELEXON.
Access to the FTP server is on the address ftp.elexonportal.co.uk . Your username and password will be the same username and password that you use to log into this site. Once logged in you will be presented with a p315 directory. This directory is then further subdivided into days using the form yyyy-mm-dd. Each day will then contain files for P0276 and P0277 files.