Dear Electricity Authority,
The wind turbine farm at Ohariu ("Mill Creek") generates electricity that is recorded in various ways by data files offered via your web page https://www.emi.ea.govt.nz/Wholesale/Dat..., such as for generation and consumption. Those two data series for Ohariu, as supplied, start with September 2015, but, the wind farm commenced generation in May 2014. So, the first request is for the supply of the missing data on its early operation.

Secondly, the generated power has an effect at the Wilton substation (via the local connection to it) in that power is metered as being fed back to the grid at 33KV. The feedback data series starts in July 2014, and I don't believe that there is any other source for such power besides Ohariu, yet the Ohariu data series (as currently supplied) show no generation until September 2015. What supplied this earlier feedback? Is the accountancy wrong?
It may well be that there had been no feedback until sufficient wind turbines became operational at Ohariu, presumably some time after May 2014. So, the second request is for the early feedback data from the time it actually began, which may have been in July 2014.

Hopefully, with the earlier generation data the accounts can then be in balance rather than in error.

Yours faithfully,
Nicky McLean

Dear Electricity Authority,
A group response was made via https://fyi.org.nz/request/19587-please-...
The relevant part is “This information is not held by the Electricity Authority (Authority) and would need to be created in order to respond to your request. The Authority does not have any additional data that can be used to resolve the issues you have highlighted. The information the Authority receives from Transpower is the same as what is published.”

There is no need to “create” the requested information, because the relevant data series already have been created. It is simply a matter of adding the missing information to the existing data series and thereby enable a correct accountancy. If your organisation does not have the data, this would be an opportunity to enact your claimed dedication “to continuously improving the way we collect and publish data.” by finding them, collecting them, and publishing them. Rather than spending time re-supplying data files with negative improvements and added errors, as described against the group response noted above..
An oddity in wind farm generation (and perhaps generation generally) is that the peak values attained in the first month or so of full-power operation are never again reached in later operation. Assessing this question is difficult in the absence of data on the early operation of wind farms, which is what provoked these requests. This aspect may be of no current interest to the Electricity authority, but publishing complete and comprehensive data would mean that outsiders could pursue their own rabbits without needing to bother you over missing data because it would not be missing.

Yours faithfully,
Nicky McLean