Update on Smart Meter Data Issue
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Update on Smart Meter Data Issue (20th March, 2026)
On Friday 6th March, a planned software upgrade to an ESB Networks internal system caused some customers’ meter readings to be processed incorrectly causing high and incorrect usage figures to be sent to all suppliers and to be displayed in customers ESB Networks Online Account.
The software defect has been fixed and more than 99% of the affected customers’ usage data has now been corrected.
It is taking longer than we originally anticipated to restore normal information for everyone, but bills will only be based on corrected data. When ESB Networks has completed the data correction it will then be provided to suppliers. Please note our ongoing data correction activity will result in a delay to the issuing of your bill.
In the meantime, customers do not need to do anything. Once the data has been corrected and verified by ESB Networks, customer meter readings will automatically adjust to reflect correct actual usage.
We apologise for the inconvenience this is causing and appreciate your patience while this issue is being resolved.
FAQs
What reassurance can ESB Networks give customers regarding their electricity bills?
ESB Networks has now corrected over 99% of the affected customer data to ensure its accuracy. When the remainder has been corrected the data will be provided to suppliers.
In the meantime, customers do not need to do anything. Meter readings will automatically adjust to reflect actual usage, which will be used for your electricity bill.
We apologise for the inconvenience this is causing and appreciate your patience while this issue is being resolved.
What caused the fault, how did it happen?
On Friday March 6th, a planned software upgrade to an ESB Networks internal system caused some customers’ meter readings to be processed incorrectly. Whilst the defect has been fixed, ESB Networks is still correcting affected customer data to ensure accurate meter readings are provided to suppliers.
Has the software issue been resolved?
ESB Networks fixed the software issue on Monday, March 9th. However, ESB Networks is still correcting affected customer data to ensure accurate meter readings are provided to suppliers.
Has ESB Networks commenced correcting the affected data?
Yes, ESB Networks is still in the process of correcting the affected meter data and is working closely with suppliers.
When will the data on the ESB Networks Online Account be corrected?
Smart graphs and other usage information is temporarily unavailable in the Online Account from March 5th. We apologise for any inconvenience. ESB Networks will provide an update in the coming days.
What measures are ESB Networks taking to ensure this does not happen again?
ESB Networks has paused system upgrades while it conducts a full post-incident review and will incorporate all improvements identified.