I would like to reconcile the data in the Grid generation trends data with the generation figures published by the major gentailers to the NZX. For example, I have calculated Mercury's generation for the three months ending March 31st as 1700 GWh using the Grid Generation Trends data. According to Mercury's Quarterly Report (attached), they generated 1626 GWh in this time period.
The nodes I am using for Mercury's generation are in the comments section.
Any assistance would be greatly appreciated