Megan, we are going to need considerably bigger buns

A concerned New Zealand citizen, AndiC, has analysed the last eight months of New Zealand wind turbine output data for us. What it tells us is that it is worse than we thought and 4.5 windfarms per year is not going to cut it. We are “going to need considerably bigger buns!” Quote.

Where I live adjacent to a string of Turbines, we get some pretty impressive winds ? 150Kph is not that unusual. But we also get days of complete calm ? usually at times when electricity demand is at its highest.

Nonetheless, our green-biased Government elected just over a year ago are still pushing so-called renewables as the way of the future. Interestingly New Zealand already produces more than 80% of its energy from Renewables, with Geothermal and Hydro way ahead of Wind.

Ironically, the green movement vehemently oppose any new hydro projects, and insist on visually polluting the beautiful GodZone countryside with these wind turbines.

Eventually I decided to try and discover exactly just how successful and efficient these wind turbine things really are. But finding the data seems like hard work. I?ve been unable to locate data on individual windfarms (unless someone can help me out here), but I have located data covering each of the North and South Islands.

Since July last year, I have been collecting the data via a computer script that downloads data at 5 minute intervals and stores it in a MySQL database. I needed to wait a reasonable interval before analysing just to make sure I had a representative sample.

I?ve just done my first analysis, and the results are as predicted ? shocking.


The above graph shows theoretical ?Plated? capacity versus actual average production by month.

Here?s the supporting data:

MonthPlated CapacityGenerated MWAverage Production

Clearly in 6 months, there has been no capacity added to the National Grid, and last July had a high of just 28.29% productivity yet December could only yield 18.93%.

These results are pretty damning and expose the deceit we are exposed to every time a new proposal is put forward.

Next time there?s a public meeting regarding how wonderful these visual pollutants are, at least I can now present data to refute many of the absurd claims. They?d be hard pressed to refute this data since it comes from the Government?s State-Owned Enterprise ?Transpower? who manage the National Grid.

I have made my data available to anyone who wants to analyse it at End quote.


We are told that the New Zealand wind farms are among the most efficient in the world: Quote.

On an annual basis, New Zealand wind farms generate at an average of around 40% of their rated output – this figure is also referred as ?capacity factor? and is among the highest in the world. End quote.

Wind Energy

According to Andi – Not even close.