The gas market is opaque relative to the electricity market, but recent major gas field outages have prompted moves to improve transparency. One of the first improvements is an initiative by the gas industry regulator, the Gas Industry Company, which
By Greg Sise, October 21, 2019
By Greg Sise, September 27, 2019
Spot prices surged late last year when there was a prolonged, unplanned outage at the Pohokura gas field offshore Taranaki. But they haven’t come back down to where they were prior to the gas outages. In this post we look at the reasons why and ask the question on everyone’s mind – will they remain high?
By Greg Sise, May 2, 2019
This is the first in a series of three posts on what I see as the most important issues for the electricity market, and by association the gas market, for the 2020s. This first post is actually a submission to the Gas Indsutry Company's recent consultation on information disclosure in the wholesale gas market. The GIC documents and all subsmissions can be found at
By Greg Sise, April 18, 2018
It’s ironic that this month’s announcement that there will be no new offshore oil and gas exploration permits issued in New Zealand was titled “Planning for the future…”. This announcement was totally out of the blue and if there is a “plan” somewhere, it appears that no one outside of government knows what it is.
By Greg Sise, July 19, 2017
The majority of direct and indirect participants in the electricity market, from generators and retailers through to large consumers, aren’t aware that there is an essential piece of market intelligence available free on this very web site. And this month we publish it for the 100th time.
By Greg Sise, May 28, 2017
I was privileged to speak at the Energy Management Association of NZ (EMANZ) annual conference in Wellington last week and showed how market reforms over the last two decades, and now the Internet, are working together to disrupt the retail electricity market.
By Greg Sise, May 26, 2017
After a long period of low spot prices and low volatility in spot prices, hydro storage lakes are emptying out and it’s a timely reminder that the hydro situation can change very quickly. But it raises the question: when spot prices start to rise, should I stay on a spot pricing plan, or should I switch to a fixed price plan?
By Greg Sise, May 5, 2017
The charges for delivery of electricity (a.k.a. lines charges) include the cost of providing local networks and the transmission grid, and are published by local network companies, typically from 1 April for the year ahead. Now that the dust has settled from the most recent round of price adjustments, let’s take a look at what’s happening to line charges in major centres around the country.
By Greg Sise, March 12, 2017
Since launching in August 2016, the Energy Exchange has run reverse auctions covering a range of site types and sizes, proving its ability to deal with the wide range of needs typical of many larger electricity consumers.
By Greg Sise, March 6, 2017
What drives electricity prices? Demand? Fuel costs? Losses? Transmission constraints? Carbon costs? The cost of new generation? Inflows? Well they all have an impact to a certain degree. The time frames vary but the answer in the long run is surprising, especially given that we are currently running at over 80% renewable generation.
By Greg Sise, December 22, 2016
This week we released our latest quarterly Price Path, a long term forecast of spot prices, to our subscribers. 2016 has indeed been an uneventful year on the spot market, a function of a warm winter and lots of rain for generation and for pastures. However, the last quarter delivered up some very significant news on the gas front.
By Greg Sise, November 15, 2016
By Greg Sise, September 21, 2016
In a very quiet month, the index decreased 0.1 c/kWh to 7.9 c/kWh at Haywards, on a volume of only one CFD (hedge) contract.
By Greg Sise, September 21, 2016
Yesterday we released our latest quarterly Price Path, a long term forecast of spot prices, to our subscribers. It was an uneventful quarter since publishing our last Price Path update in July, but this update included some significant revisions of probabilities on extreme scenarios, and a large section on the viability of the thermal fleet.By Greg Sise, 21 September 2016