Summer 2017-18 in the NEM

Articles pertaining to summer 2017-18 in the NEM

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Renewable energy – did it just laze about over summer?

A review of the high demand periods over summer 2017/18 highlights the important contribution renewable generation is making to meeting peak demand and addressing the reliability of the power system.

FCAS in Action – What Happens When a Generator Trips? (or Never let the data get in the way of a good story)

Understanding the FCAS response by all generators when a unit trips in the NEM. A detailed look at the Loy Yang A unit trip in December 2017 and the contribution of the Hornsdale Power Reserve.

Third peak Scheduled Demand in Queensland in 3 days - 9,924 MW at 16:50 Wednesday 14th February

A new peak Scheduled Demand and Operational Demand in Queensland today with Scheduled Demand still over 9,100 MW after 8 PM.

Queensland region sees a new record peak Scheduled Demand – at 18:50 on Monday 12th February

Queensland experienced a new record for Scheduled Demand for electricity today - but what's particular staggering is how late in the day it happened!

Available Generation reduction across Loy yang A and Loy Yang B over Sunday evening was only 420MW

A brief look at the numbers with the temporary coal supply issue affecting Loy Yang A and Loy Yang B overnight

High electricity demand forecast for Queensland – on Monday, Tuesday and Wednesday next week

Looks like being an interesting day on Wednesday next week (14th February 2018) with high temperatures currently forecast for parts of both QLD and NSW

Victorian demand rises above 9,000MW – which (in combination with other factors) leads to a volatile day in the southern regions

On a day when high temperatures drove demand in Victoria above 9,000MW (and NEM-wide demand above 30,000MW) we saw some price volatility - with prices in VIC and SA up around $14,000/MWh

Queensland’s Scheduled Demand for electricity topped 9,000MW today (Wed 31st Jan) for the first time in summer 2017-18

Electricity demand in Queensland today reached 9072MW in the 16:40 dispatch interval, passing 9,000MW for the first time this summer.

Sunday 28th January sees Victorian electricity demand (Scheduled, and Operational) above 9,000MW

Yesterday (Sunday 28th January) saw electricity demand (both Scheduled and Operational) above 9,000MW in the heat. Others have noted this was the highest-ever non-working day demand in Victoria, but I have not delved in detail.

If I were going to perform an objective review of what happened last Thursday 18th and Friday 19th, here’s a couple things I would look into…

A starting list of all the factors I would like to delve into, in order to perform an objective review of what happened last Thursday and Friday in Victoria and South Australia

Some perspectives on events last Thursday and Friday

Some observations about the events across Victoria and South Australia of Thursday 18th and Friday 19th January 2018.

AEMO announces intention to (possibly) intervene in Victoria for Friday 19th January (by invoking Reserve Trader)

AEMO announces the possibility of dispatching "Reserve Trader" tomorrow to address a forecast tight supply/demand balance.

Tight supply/demand balance forecast for SA, VIC and TAS on Thursday and Friday

With high temperatures forecast for Thursday and Friday, here's a quick look at what might be in store...

Friday 12th January saw high instantaneous wind output in South Australia (but not quite a new record)

Prompted by a tweet referencing our RenewEconomy-sponsored NEMwatch Widget, we have a quick look at all-time peak instantaneous aggregate wind output in South Australia

Hot in Queensland today (Saturday 13th January 2018 with high demand, and volatility) but hotter still tomorrow

A quick review of a hot and sticky day in Queensland that saw high levels of demand reached on a Saturday - with demand peaks tomorrow forecast to be just as high (on a Sunday!). Today saw the first major price spikes in the Queensland region of summer.

A stinking hot weekend poses a reminder of the difficulty of forecasting electricity demand

AEMO's demand forecasts for Saturday 6th January 2017 were about 500MW below what the mark turned out to be. It appears that this is due (at least in part) due to difficulties in forecasting intermittent generation which acts to reduce "Scheduled Demand".

It’ll be hot in parts of the NEM tomorrow (Saturday 6th Jan) but don’t expect demand to be too high – and don’t be trigger happy on the Emergency Demand Response!

Weather forecasts tell of an expected hot weekend on Saturday (in Melbourne & Adelaide) and then Sunday (in Sydney) - which has led to some news articles talking about "searing heat across the southeast putting energy supplies under pressure". Let's not get carried away - it looks like the levels of demand will be pretty moderate.

Still a long way to go before wind forecasting models are as good as they will need to be as installed capacity grows….

Today (Wednesday 27th December) sees some wild gyrations in aggregate wind farm output across South Australia. The (current) impossibility in forecasting these gyrations accurately is one of the factors contributing to higher prices seen today in South Australia and Victoria.

Afternoon “Scheduled Demand” in Victoria on Christmas Day drops as low as overnight demand

Afternoon demand on Christmas Day as low as overnight demand as a result of several factors

Hot weather sees NSW demand at 13,000MW and NEM-wide demand above 31,000MW

A quick review of a day when NSW demand was forecast to be high

NSW demand currently forecast to peak up at 13,500MW on Tuesday 19th December

Current forecasts at AEMO show NSW demand forecast to peak above 13,500MW (which would easily be the highest December demand in NSW since 2009).

Coincident warm demand forecast for VIC and NSW tomorrow late afternoon (Monday 18th December)

AEMO forecasts NEM-wide demand to exceed 32,000MW tomorrow (Monday 18th December), which is far higher than seen in December 2016, and one reason for the LOR1 low reserve notices.

“Scheduled Demand” in Victoria stopped short of 8,500MW today (lower than forecast) but the demand peak forecast for NSW tomorrow has grown to almost 13,000MW

Demand in Victoria peaked lower than forecast today, but demand forecasts for NSW tomorrow are continuing to climb.

Hornsdale Power Reserve continues to reach new milestones with a discharge rate of 100 MW today

Hornsdale Power Reserve a.k.a "World's biggest battery" achieves new milestones - discharged at a rate of 100MW and charged continuously for nearly 3 hours.

High temperatures to give demand a kick in Victoria tomorrow (Wednesday 13th December)

AEMO forecasts higher demand in Victoria (and South Australia) tomorrow with the hot weather - and a slight LOR1 warning.

Electricity demand set to climb in NSW on Thursday with the hot weather forecast

With hot weather forecast for NSW this Thursday (especially in inland areas) it's no surprise to see that the AEMO is forecasting higher demand on the day. Linked to this there is also a slight negative (local) surplus generation forecast.

AEMO updates generator combinations for SA system strength

AEMO has adjusted the formula (i.e. constraint equations) used to manage system strength in South Australia, which has been (since mid-2017) by constraining down the output of wind farms under certain conditions.

Big ramp in QLD demand Thursday evening to be first time above 8000MW this summer

Queensland demand ramped up, after the sun had gone down Thursday evening, to pass 8000MW for the first time this summer

The first stage of the Kidston Energy Park powers up

With Genex releasing an ASX announcement of first revenue at Kidston Solar Farm, we use NEMreview v7 to have a quick look.

Hornsdale Power Reserve (a.k.a. "the worlds biggest battery") supplied SA for over an hour yesterday, peaking at 71 MW discharge

It's 1st December 2017 - the first day of summer, and also the promised delivery date for the "world's largest battery". In this updated post we look at how it's been operating.

Not quite summer and volatility returns to Victoria and South Australia

Some volatility with the hot weather on Wednesday 29th November - is this a precursor for summer?

What's the market data saying about this Summer?

Guest author, Allan O'Neil, follows up a post in September (reviewing what the AEMO's ESOO was saying about summer 2017-18) with this review of updated data

Possibilities of Peak Demand (VIC and SA) during summer 2017-18

Our guest author, Rob Davis, looks at what might emerge for summer 2017-18 given the La Nina outlook, and prior distributions of Cooling Degree Days for Victoria and South Australia

Decoding AEMO’s latest ESOO–will the lights stay on this summer?

Some initial analysis by our guest author, Allan O'Neil, about what AEMO's Statement of Opportunities 2017 is saying in terms of this coming summer 2017-18

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