Figure 1 A good day for wind & PV in South Australia, but just a day. Source: Global Roam NEM Watch

There have probably been lots of times in the past when renewables have completely dominated South Australia, but they don’t spring to mind. The addition of 150 MW of Hornsdale together with the AEMO formally recording the estimated rooftop PV output means that on Sunday we saw that for a couple of hours renewables were about 15/16 of South Australian generation and something like 70% of the total over the day.

In Victoria, if we compare the first 9 days of April with PCP what we see is that gas is largely picking up the lost Hazelwood load.

Figure 2 Generation in Victoria 1-9 April 2017 & 2016. Source: NEM Review

Most of that increased gas fueled electricity  is coming from ORG’s Mortlake Station. That’s an open cycle station ie its burning about 11.25 GJ gas per MWh. In addition, gas fired electricity suffers from both a decline in output over time so in general they mostly don’t run all the time. Maintenance is also based on the number of starts. If ORG was paying $9 GJ for gas, and it’s not, it would be costing over $110/MWh to run the power station.

Figure 3 Mortlake output since Hazelwood closed. Source: NEM Review

What this means is that for ORG, the forthcoming sale of Loy Yang B with its 1000 MW capacity is a matter of some considerable interest. Although ORG’s avowed “cleaner energy” policy may prevent them from directly bidding for LYB they will be likely  to offer any other buyer some contractual assistance in the form of a PPA. Still, whoever buys that station will bear the risk of future carbon policy change, emission intensity scheme and the new supply coming from Victoria’s renewable energy policy.

Another side effect of the closure of Hazelwood is to increase the opportunity of wind exports from South Australia to Victoria. In 3 out of 9 days in April South Australia has been a net exporter of electricity and the extra export opportunity has resulted in better average prices. South Australia wind has achieved an average of $63 MWh  in the first 9 days of April. If you have some unhedged capacity and you are getting $145 for your black and green energy you can probably colour your afternoon gin pink.

Turning to the weekly action

Volumes. In the week to April 7 were well down on last year, 6% across the NEM with every State down, led by Queensland  down 10%. Although sharply lower temperatures in Sydney and Brisbane are part of the explanation we also think that the floods in Qld have impacted electricity demand.

• Future prices. Our bold guess is that we think futures prices have more or less stopped going up for the time being, at least for FY18. If you look at the baseload futures graphs you can see that over the past month there has been little change in most contracts. The challenge for the big generators now is to translate those futures prices into profits. This requires writing contracts with customers at the futures price. Leaving aside the aluminium smelter loads, Bell Bay, Gladstone, Tomago and Portland, most electricity customers will have no more than a 3 year contract. Indeed we expect many customers just buy 12-18 months in advance. We also think many big customers will have been buying from the spot market taking advantage of last year’s low prices and then getting caught out by the speed of the price rise. All of those customers face the tough choice of whether to lock in much higher prices now prevailing in the futures or to continue to take their chances in the spot market. The “$300 cap” could provide good insurance cover for those looking to stay in the spot market. Retail customers are just going to have to pay up or put some more PV in.
• Spot electricity prices. Were significantly higher than last year despite the lower demand
• REC Unchanged
• Gas prices Stayed at the $10 GJ level. Gas generation represents a share of the market in every NEM region and gas’s share of the Victorian market has picked up since the closure of Hazelwood. The main up lift is coming form ORG’s Mortlake plant. This is open cycle so its expensive electricity.
• Utility share prices.

Figure 4: Summary

Share Prices

Figure 5 Selected utility share prices.

Figure 6: Weekly and monthly share price performance

Volumes

Figure 7: electricity volumes

Figure 8: 7 Day moving avg year on year temp change. Source: BOM

Base Load Futures

Figure 13: Baseload futures financial year time weighted average

Gas Prices

Figure 14: STTM gas prices

Figure 15 30 day moving average of Adelaide, Brisbane, Sydney STTM price. Source: AEMO

David Leitch is principal of ITK. He was formerly a Utility Analyst for leading investment banks over the past 30 years. The views expressed are his own. Please note our new section, Energy Markets, which will include analysis from Leitch on the energy markets and broader energy issues. And also note our live generation widget, and the APVI solar contribution.