- Joined
- 14 February 2005
- Posts
- 15,109
- Reactions
- 16,925
This just keeps getting worse:
http://www.bom.gov.au/climate/outlooks/#/rainfall/median/seasonal/0
http://www.bom.gov.au/climate/outlooks/#/temperature/maximum/median/seasonal/0
http://www.bom.gov.au/climate/outlooks/#/temperature/minimum/median/seasonal/0
Rainfall and temperature are the two key drivers of inflows to hydro catchments, the latter due to the link between temperature and evaporation (mostly on the ground before the water gets to the storage) and the former for obvious reasons. Both are heading in the wrong direction it seems.
This won't affect the ability of either Hydro Tas or Snowy Hydro to produce peak power but it does mean lower inflows. The result of that is that both will be less keen to generate outside the peaks, raising prices to bring that outcome about (there's no other way to do it, that's how the market works) and leaving someone else (coal, gas) to fill that gap. For the smaller hydro operators it's more complex due to water releases for irrigation (eg Dartmouth is primarily an irrigation storage, power being a secondary use) so they may well generate more in the short term since drier weather = more need for irrigation.
The issue here is about price not physical supply and I must point out that there is no physical threat to supply in Tas or anywhere else directly relating to the weather outlook. But to the extent that a cheap source (hydro) produces less and is replaced by a much higher cost source of production then that's going to push prices up even further (and they'll be going up quite a bit with the closure of Hazelwood anyway).
So it's all going wrong really. Coal plants closing, gas price has gone through the roof and physical supply is scarce, lower inflows into hydro catchments.
http://www.bom.gov.au/climate/outlooks/#/rainfall/median/seasonal/0
http://www.bom.gov.au/climate/outlooks/#/temperature/maximum/median/seasonal/0
http://www.bom.gov.au/climate/outlooks/#/temperature/minimum/median/seasonal/0
Rainfall and temperature are the two key drivers of inflows to hydro catchments, the latter due to the link between temperature and evaporation (mostly on the ground before the water gets to the storage) and the former for obvious reasons. Both are heading in the wrong direction it seems.
This won't affect the ability of either Hydro Tas or Snowy Hydro to produce peak power but it does mean lower inflows. The result of that is that both will be less keen to generate outside the peaks, raising prices to bring that outcome about (there's no other way to do it, that's how the market works) and leaving someone else (coal, gas) to fill that gap. For the smaller hydro operators it's more complex due to water releases for irrigation (eg Dartmouth is primarily an irrigation storage, power being a secondary use) so they may well generate more in the short term since drier weather = more need for irrigation.
The issue here is about price not physical supply and I must point out that there is no physical threat to supply in Tas or anywhere else directly relating to the weather outlook. But to the extent that a cheap source (hydro) produces less and is replaced by a much higher cost source of production then that's going to push prices up even further (and they'll be going up quite a bit with the closure of Hazelwood anyway).
So it's all going wrong really. Coal plants closing, gas price has gone through the roof and physical supply is scarce, lower inflows into hydro catchments.