Dear Electricity Authority,
Via your organisation's web site https://www.emi.ea.govt.nz/Wholesale/Dat... some seven sub-directories give links to files containing data on the half-hourly generation and consumption of electricity at many places across the country, all grouped into monthly files. These data files are supplied in the following month, generally around the second week, thus the data files for December 2021 appeared in the middle of January 2022.

The data files for January 2022 have yet to appear, and now it is the end of February. Can they please be supplied?

Yours faithfully,
Nicky McLean

Dear Ms. Ballinger,
Thank you for your rapid reply, however this request does not concern the Final and Reserve price data files that you mention. It concerns quite different data on electricity generation and consumption.. II have just checked for today, and now found them to be offered via links on your website..
Success!

Yours sincerely,
Nicky McLean

Dear Ms. Ballinger,
This is to confirm that the January data files for generation and consumption did indeed contain the usual data (and they for January), so all is well on that issue.
However, I noticed in https://www.emi.ea.govt.nz/Wholesale/Dat... the presence of a malformed file name, 20201_HVDC_flows.csv. The data file was not quite empty, containing only the standard header line and thus being far smaller than the other data files. Having a systematic naming scheme for files and listing them in order makes it easier to notice errors and thus prevent their publication - just glancing at what comes first and what last is easy - but, one does have to make the effort to look for this to work.

Yours sincerely,

Nicky McLean