Semi-scheduled generation–what are the real issues?
Marcelle digs into the data to find out what the real issues are in the AER’s proposed rule change for semi-scheduled generators.
Areas of deeper analysis
It’s good news that time-weighted average prices for Q2 2020 are down on prior years – right?
Spurred by a number of concurrent requests I’ve returned to the pattern of prior analysis of Q2 prices (completed in 2016, 2017 and 2018) to look at what’s changed for Q2 2020 that’s just ended. Some stakeholders clearly taken by surprise. Analysis includes the SWIS in Western Australia
Why Have Home Battery Forecasts Been Staggeringly Wrong For Years?
Ronald Brakels looks at the state of the home battery market and reflects on how past predictions of its evolution look in hindsight.
Looking gloomy at Oakey 2 Solar Farm again?
Yesterday I received a call from the people at PV Magazine who were preparing for the ‘Virtual Roundtables Europe 2020’ event on this week in Germany – i.e. Tuesday evening (now!) and Wednesday evening ‘NEM time’. I’m told the event…
Feedback we have received about the 2019 edition of our Generator Statistical Digest
Just over 4 months have passed since the release of the Generator Statistical Digest 2019. We take a look back at some of the compliments and comments we’ve received and seen from a variety of people who have accessed their copy of the GSD2019.
Reasonably widespread deviations delivers highest ‘aggregate Raw Off-Target’ for the 2019 year for ‘all Wind’
This is the 3rd of 4 Case Studies to follow on from the main article (summarising results across 105,120 dispatch intervals through 2019 for ‘all Coal’ and ‘all Wind’ groupings). In this case, let’s look at the ‘worst’ case, in aggregate, where wind units under-performed compared to dispatch targets.
Stanwell unit operation on 12th October 2019 delivers most negative ‘aggregate Raw Off-Target’ for the 2019 year for ‘all Coal’
This is the 2nd of 4 Case Studies to follow on from Tuesday’s main article (summarising results across 105,120 dispatch intervals through 2019 for ‘all Coal’ and ‘all Wind’ groupings). In this case, let’s look at the ‘worst’ case, in aggregate, where coal units over-performed compared to dispatch targets.
Kogan Creek trip on 9th October 2019 delivers highest ‘aggregate Raw Off-Target’ for the 2019 year for ‘all Coal’
Following on from Tuesday’s main article (summarising results across 105,120 dispatch intervals through 2019 for ‘all Coal’ and ‘all Wind’ groupings), this is the first of 4 x Case Studies that look at each of the extremes in outcome. This one is the dispatch interval featuring the greatest over-performance, collectively, across all coal units through 2019.
Observing Easter Saturday, a little belatedly
Guest author, Allan O’Neil, invests some time to explore a number of different aspects of Easter Saturday (11th April 2020), each noteworthy in their own right (including low demand, high percentage share renewables, negative prices and dynamic bidding)
Do you know the difference between Virtual Inertia and Fast Frequency Response?
Our guest author Stephen Sproul looks at how the Dalrymple Battery Energy Storage System (BESS), currently the only source of virtual inertia on the NEM, responded to the November 2019 SA islanding event.
Using the GSD2019 to explore the VALUE of Dispatchability
An article published by AEMC on the ‘value of dispatchability’ provided the spur to return to our intention of freely sharing insights gleaned from the Generator Statistical Digest 2019. Today’s article highlighting the value of dispatchability.
FCAS Matters – More than ever
Jonathon Dyson of Greenview Strategic Consulting uses the Generator Statistical Digest to highlight FCAS revenue results, contingency recovery and regulation costs for 2019, and help explain why it is critical for us all to understand FCAS.
Extreme temperature effects on generation supply technology
Summer 2019-20 is not yet done, but already we have seen some extremes in temperature in different places – which have led to different concerns. Today I use the GRC2018 and GSD2019 to take a look at what the implications for this actually are.
A further look at Thursday Jan 30th
Guest author, Allan O’Neil does a masterful job with limited time in reviewing some of the goings-on in the NEM (particularly VIC and SA) on Thursday 30th January 2020
2019 was not a great year at the Liddell Power Station
Comments by the Brett Redman (CEO of AGL Energy) about the poor performance of Liddell Power Station, as reported in the media, prompted me to open up the Generator Statistical Digest 2019 to have a quick look.
Review of extremes in ‘Raw Off Target’ performance through 2019, with the Generator Statistical Digest 2019
Using the (hot off the press) Generator Statistical Digest 2019, we take a look across all 304 DUIDs to see how they performed through calendar 2019 in terms of large excesses in ‘Raw Off-Target’ in both directions. These results suggests implications for the future…
Generator Statistical Digest 2019 is released on Tuesday 28th January 2020
We’ve been appreciating the early orders flowing in from those who did not wait until the release of the GSD2019, and we’re pleased to announce that this new Statistical Digest is available today.
Understanding the NEM through the lens of the GSD 2019
Jonathon Dyson, Director of Greenview Strategic Consulting and co-developer of the Generator Statistical Digest 2019, uses insights from the GSD to illustrate the nuances of generation in the NEM as it goes through a major transition.
Selected initial observations from the Generator Statistical Digest 2019
Guest author, David Leitch, in his first article here on WattClarity, walks through some of what first jumps out to him in his initial review of the Generator Statistical Digest 2019.
What lies ahead for the NEM in 2020? Some lessons from 2019
Guest author, Ben Willacy, takes a first look at the Generator Statistical Digest 2019 and highlights a few initial observations relating to the performance of wind, solar and storage in this energy transition.