BTW Jantar there is a stock (and thread) with solar and PSH developing ,GNX on the ASX section.
That GNX project will demonstrate the flexibility that PSH can provide. It is a pity that the limited storage on the project effective makes it an intra day load shifting system rather than a full blown PSH scheme. It will be interesting to see the final result.
The Tasmanian project would appear to more along the lines of what I have suggested. https://www.brandtasmania.com/energy...il+marketing+s
Some interesting comments. I would say that the price per MWh for PSH does not make sense when compared to other forms of generation by a long way. I looked at the SA Tesla battery. For the circa $100m build cost I could only work out lifetime $35m of revenue in a NZ context excluding maintenance and energy cost in. So doesn't make sense. With respect wind, get the intermittent issues but with hydro control and gas fast start combined with wind forecast which is good for days out wind should not be penalised as it is. The other forms of generation can easily deal with it. In reality if it doesn't rain much then we have bigger issues. We are 6 weeks away at any time from an energy crisis due to hydro reliance in reality.
NZ market has particular characteristics that differentiate it from other markets. Hey here's a serious idea. Why not built a sub cable to Victoria. Now that would be interesting(and it is techinically viable).
...with wind forecast which is good for days out ....
This comment would make for a good comedy sketch. In TP 14 - 16 this morning was the first time this year that the actual wind generation was close to forecast for more than 1 hour.
On the price per MWh for PSH. The possible lake Onslow scheme would have an operating cost of around 30% more than a run-of river hydro scheme. The possible Hawea Neck scheme would have an operating cost of around 5% more than a run-of-river scheme as it already has large natural inflows. The added cost comes from greater transmission costs
The message is that the cost to the consumer Must come down as the cost of alternatives is decreasing fast. Customers will and are leaving the networks. Building big capital is out.
On the price per MWh for PSH. The possible lake Onslow scheme would have an operating cost of around 30% more than a run-of river hydro scheme. The possible Hawea Neck scheme would have an operating cost of around 5% more than a run-of-river scheme as it already has large natural inflows. The added cost comes from greater transmission costs
I thought Transpower met the transmission costs? So with transmission and energy generation costs separated already , and transmission costs out of the Contact cost book (obviously Contact will pay transmission costs, but in conjunction with every other power generator as a collective group) , is there not every incentive already for Contact to pursue Pumped Stored Hydro?
SNOOPY
Watch out for the most persistent and dangerous version of Covid-19: B.S.24/7
I thought Transpower met the transmission costs? So with transmission and energy generation costs separated already , and transmission costs out of the Contact cost book (obviously Contact will pay transmission costs, but in conjunction with every other power generator as a collective group) , is there not every incentive already for Contact to pursue Pumped Stored Hydro?
SNOOPY
The new transmission lines from the power station to the grid interconnection point have to built and paid for by whoever is building the power station. Transpower own and operate the main grid, but not those spur lines.
Just not true. I have been tracking wind forecast v output and it is broadly accurate. When you are talking about wind making up 5% of NZ generation and maybe 1 day out being +- 10% of forecast you are talking about output vairiation v forecast of max 0.5% of national demand. Given the price bucket offer in and offer in exceeds demand by at least 10% in winter(summer better) then there is no issue if wind varies to a small degree. For wind to be penalised by having to offer in at $0.01 per Mwh and be gamed by other generators is just a joke. Thankfully a rule change is coming(after 15 years) next year and should have happened sooner.
Reply With Quote
Originally Posted by Hectorplains
Bookmarks