Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.
Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic
1 | ... | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | ... | 132
3885 posts

Uber Geek


  #1764051 13-Apr-2017 20:54
quote this post

Super cheap spot prices over whole country right now. Around 0.5c per unit. After 9 pm ill only be paying approx 6c per unit including all lines fees and gst.





2438 posts

Uber Geek

Trusted

  #1773995 2-May-2017 07:57
Send private message quote this post

Price warning from the app...spot prices high across the country...Flick's website is down :(


16206 posts

Uber Geek

Trusted
Subscriber

  #1773998 2-May-2017 08:03
Send private message quote this post

Flick website works fine for me, with power at 18c/kwh in Wellington and possibly still climbing. A spike on the coldest morning of the year so far isn't unexpected, but I'd have thought they'd have bought more generation online.


175 posts

Master Geek


  #1773999 2-May-2017 08:12
Send private message quote this post

timmmay:

 

Flick website works fine for me, with power at 18c/kwh in Wellington and possibly still climbing. A spike on the coldest morning of the year so far isn't unexpected, but I'd have thought they'd have bought more generation online.

 

 

 

 

Given the low lake levels in the south island we're missing a decent chunk of generation as we are in a "dry sequence". However, TCC and at least one Rankine unit are running. Also it looks like one of the Stratford Peakers is also running.

 

So the driver is soft wind + low lakes from the big lakes in the South Island really.


16206 posts

Uber Geek

Trusted
Subscriber

  #1774002 2-May-2017 08:17
Send private message quote this post

I see the lake levels in the south are a bit lower than average, but the north is better than average. Still, with winter coming, you'd think that'd increase before too long.

 

Edit - and now the Flick website is down for me. 502 "bad gateway" suggests their web server is available but the app server is overloaded.


175 posts

Master Geek


  #1774005 2-May-2017 08:26
Send private message quote this post

You are right, SI Hydro is above average for this time of year, however that's controlled storage, which essentially only accounts for the Waitaki scheme (Pukaki, Tekapo) and this is making up the bulk of SI Hydro generation at the moment (I suspect it is running close to capacity)

 

Contact's Clutha System (600 MW) and Meridian's Manapouri scheme (800 MW) are uncontrolled and have not received a significant rainfall in over 12 weeks, meaning they are both very empty.  For example, if you look on the Meridian Hydro page here you can see Te Anau is actually below the main range by about 20 cms, a very significant amount. Contact don't make that information available on their website, but Wakatipu, Hawea etc are all empty and the only discharge really is for environmental reasons (e.g. minimum discharge in resource consent).

 

Taupo conversely is very full.

 

The actual inflow season for hydro lakes in the South Island is actually November / December (which is why you sometimes see spill) as a lot of rain that falls in the Autumn / Winter actually falls as snow (I believe it was down to 800 metres on the weekend).

 

But the driver is from Clutha and Manapouri where there is almost 1400 MW of capacity, you'd likely see around 400 MW of generation at the moment due to the low lake levels.

 

 

 

I'd recommend using https://www2.electricityinfo.co.nz over the Flick app, it might give more useful information (e.g. 5 minute and NRS schedule data)


16206 posts

Uber Geek

Trusted
Subscriber

  #1774008 2-May-2017 08:31
Send private message quote this post

I wonder if this means we're going to get more spikes or have higher prices than average for the next little while. Things have been pretty flat, but the start of the cold weather is when the higher peak time prices usually start.


84 posts

Master Geek


  #1774014 2-May-2017 08:46
Send private message quote this post

Before Flick went down I got a screenshot of 1047.2c/unit, but nothing remotely that high was showing on http://www.em6live.co.nz/ or https://www2.electricityinfo.co.nz/.

What gives?

83 posts

Master Geek


  #1774093 2-May-2017 10:47
Send private message quote this post

voy1d:

Taupo conversely is very full.




Ahh, so this is why power is currently cheaper in the north island?

40 posts

Geek


  #1775419 4-May-2017 10:39
Send private message quote this post

pogo: Before Flick went down I got a screenshot of 1047.2c/unit, but nothing remotely that high was showing on http://www.em6live.co.nz/ or https://www2.electricityinfo.co.nz/.

What gives?

 

 

 

2 days later and the actual price is on Flick's usage graph.  Looks like it didn't go any higher than about 34 cents. Unsure how the app got it so drastically wrong, we stopped making out morning coffee!!!


84 posts

Master Geek


  #1775422 4-May-2017 10:49
Send private message quote this post

Looks like it was only the forecast prices that went crazy (the NRS is the forecast and the RTP is the 5 min price):

https://www2.electricityinfo.co.nz/prices

So I assume that Flick reacts to the forecast price. What worries me is that this happened at about 7:30am but I got a notification at 8:15ish. Unless there was another event at 8:15?


175 posts

Master Geek


  #1775982 4-May-2017 23:36
Send private message quote this post

The reason for that was a spring washer in that schedule - which later washed out. The cause of this was derived from the outage on the ASB_TIM_TWZ_2 circuit, which left only two remaining circuits between TWZ and ISL and thus there was no solve for getting sufficient load into the ISL node (at least in the market model)

 

I suspect looking at this that Orion were load managing, because the constraint is specifically a STABILITY constraint.


16206 posts

Uber Geek

Trusted
Subscriber

  #1776032 5-May-2017 08:23
Send private message quote this post

voy1d:

 

The reason for that was a spring washer in that schedule - which later washed out. The cause of this was derived from the outage on the ASB_TIM_TWZ_2 circuit, which left only two remaining circuits between TWZ and ISL and thus there was no solve for getting sufficient load into the ISL node (at least in the market model)

 

I suspect looking at this that Orion were load managing, because the constraint is specifically a STABILITY constraint.

 

 

 

 

Spring washer?

 


180 posts

Master Geek

Trusted

  #1776045 5-May-2017 09:12
Send private message quote this post

timmmay:

 

 

 

 

 

Spring washer?

 

 

 

 

 

Yup! Exactly that. It gives a very good visual image of the discontinuity jump of the price at one point in the circuit.

 

Here's a video with more info. I skipped the 3 backstory ones, as the last will be sufficient for most people to get the idea... but if you want to really understand it, click back to the first video on the right.

 

https://www.youtube.com/watch?v=Yp2a7KY9pNY&list=PLXUccGn4ptEO5e0-MV37_vWPWerhB8yak&index=4


16206 posts

Uber Geek

Trusted
Subscriber

  #1776050 5-May-2017 09:27
Send private message quote this post

It seems like the whole pricing system is more complex than it really needs to be.


1 | ... | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | ... | 132
Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic


News »

Freeview On Demand app launches on Sony Android TVs
Posted 6-Aug-2020 13:35


UFB hits more than one million connections
Posted 6-Aug-2020 09:42


D-Link A/NZ extends COVR Wi-Fi EasyMesh System series with new three-pack
Posted 4-Aug-2020 15:01


New Zealand software Rfider tracks coffee from Colombia all the way to New Zealand businesses
Posted 3-Aug-2020 10:35


Logitech G launches Pro X Wireless gaming headset
Posted 3-Aug-2020 10:21


Sony Alpha 7S III provides supreme imaging performance
Posted 3-Aug-2020 10:11


Sony introduces first CFexpress Type A memory card
Posted 3-Aug-2020 10:05


Marsello acquires Goody consolidating online and in-store marketing position
Posted 30-Jul-2020 16:26


Fonterra first major customer for Microsoft's New Zealand datacentre
Posted 30-Jul-2020 08:07


Everything we learnt at the IBM Cloud Forum 2020
Posted 29-Jul-2020 14:45


Dropbox launches native HelloSign workflow and data residency in Australia
Posted 29-Jul-2020 12:48


Spark launches 5G in Palmerston North
Posted 29-Jul-2020 09:50


Lenovo brings speed and smarter features to new 5G mobile gaming phone
Posted 28-Jul-2020 22:00


Withings raises $60 million to enable bridge between patients and healthcare
Posted 28-Jul-2020 21:51


QNAP integrates Catalyst Cloud Object Storage into Hybrid Backup solution
Posted 28-Jul-2020 21:40



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.