You can gain access to your half-hourly usage reports via ESB with or without a smart tariff in place. (We do not have access to this data unless you move to an Interval Smart Tariff.)
ESB’s Smart Meter Portal for your meter has a report as well as visual graphics on your usage. https://myaccount.esbnetworks.ie/Api/HistoricConsumption
Select “Register Now”. When you sign-up for this access, be sure to use the same email address and phone number that you’ve registered with us. If it’s not allowing you to sign-up the account automatically, then call 021-238-6555 option “0”for help with that.
Here is a video on Portal Sign-Up: ESB Networks: How to Sign Up or Create An Account
Here is a video about using the ESB Portal: ESB Networks: How To View Your Electricity Usage
Here is a video on using Smart Meter functions: https://www.youtube.com/watch?v=x964s1NGUmI