Future of renewables in victoria dr jeff washusen marsden jacob associates
Download
1 / 11

Future of Renewables in Victoria Dr Jeff Washusen Marsden Jacob Associates - PowerPoint PPT Presentation


  • 57 Views
  • Uploaded on

Future of Renewables in Victoria Dr Jeff Washusen Marsden Jacob Associates. 30 April 2012. VPELA. Points for discussion. Comment on the past and future electricity price trajectories and some of the things that are, and will, impact this.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Future of Renewables in Victoria Dr Jeff Washusen Marsden Jacob Associates' - edolie


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Future of renewables in victoria dr jeff washusen marsden jacob associates

Future of Renewables in VictoriaDr Jeff Washusen Marsden Jacob Associates

30 April 2012

VPELA


Points for discussion
Points for discussion

  • Comment on the past and future electricity price trajectories and some of the things that are, and will, impact this.

  • Very brief and high level comparison of the long run costs of current and prospective fossil fuel technologies.

  • Personal views on past and future directions for “demand side” participation in energy markets and energy production and use.

  • Most material comes from an Expert Witness statement prepared for the EPA in the Dual Gas VCAT appeal.


Electricity price trajectories energy production consumption
Electricity price trajectories Energy production & consumption

Key Observations:

  • AEMO continued to forecast increased production (until 2012) – even though consumer load has been flat or falling since late 2007.

  • Change in rate of load growth is unprecedented in my life time.


Electricity price trajectories maximum summer demand
Electricity price trajectories Maximum summer demand

Key Observations:

  • AEMO continues to forecast increase in maximum summer demand.

  • MSD is increasing in volatility due to combination of increasing penetration of AC and variability in extreme summer temperature ON WORKING WEEK DAYS.

  • The volatility in demand will also be impacted by proliferating Solar PV – although Solar PV seems unlikely to reduce extreme MSD (which typically occurs in late afternoon).


Electricity price trajectories nem vic region demand and energy
Electricity price trajectories NEM VIC Region demand and energy

Key Observations:

  • Rate of increase in energy production and consumption peaked in late 2007.

  • Both production and consumption have been falling since 2008.

  • Even maximum demand growth appears to be stalling – although “spread” is still increasing.

  • These changes most probably reflect the impact of increasingly demanding mandatory energy efficient measures reinforced by rapidly rising retail electricity price.


Electricity price trajectories nem vic region demand and energy1
Electricity price trajectories NEM VIC Region demand and energy

Key Observations:

  • “True” base load has remained flat for the last decade.

  • This has a major impact on the type of new generation capacity that will be needed in the NEM.

  • What these plots DO NOT show is that supply capacity has become increasingly flexible. Even brown coal plant now gains commercial benefit from flexible operation.

  • New capacity will capture value by being both reliable and flexible.


Electricity price trajectories nem vic region spot price
Electricity price trajectories NEM VIC Region spot price

Key Observations:

  • Spot price is extremely volatile, with annual average changes in excess of 100% - both up and down.

  • Since the mid-1990s, annual average spot price has only been close to (estimated) long-run marginal cost for new base load thermal plant in 2 years.

  • No irrational investors exist in the market.

  • The extreme volatility and (low) range in annual average spot price is a challenge for any new entrant investor – “old fuel” or renewable.


Electricity price trajectories nem vic region futures contract price
Electricity price trajectories NEM VIC Region futures contract price

Key Observations:

  • Futures contract prices are (almost) as volatile as annual average spot price.

  • Futures prices are impacted by forecast conditions – such as shortage of water during the prolonged drought.

  • Futures prices also appear to be impacted by spot market “sentiment”.

  • Impact of carbon price was impossible to gauge in late 2011 – and is likely to remain so until after next Federal election.


Comparison of fossil fuel costs
Comparison of fossil fuel costs

Key Assumptions:

  • Gas $5.00/GJ

  • Coal $4.20/t

  • Carbon price $23/t

  • Public domain unit capex costs for OCGT, CCGT and IGCC.

  • Indicative Dual Gas unit capex for IDGCC.

  • $150M Government subsidy for IGCC & IDGCC.

  • 30 year analysis.

  • 10% Discount rate

    Key Observation:

  • It is easy to see why rational investors will build OCGT – and then think about CCGT.


Electricity price trajectories residential retail price
Electricity price trajectories Residential retail price

Key Observations:

  • Largest increase is retail variable energy, up 50% since 2006 – even though both spot prices and Futures prices remained weak.

  • Recently ~$110/MWh, compared to ~30/MWh spot price and $40-$50/MWh Futures price.

  • Unclear if this is due to risk presented by increasingly volatile load profiles of increasingly prolific & Solar – or the impact of another retail oligarchy.

  • Fixed network cost increase due to Government mandated “Smart Meter Rollout”.


Summary points
Summary points

  • The electricity market is an extremely volatile and highly risky place to invest in long life capital assets. The risk is compounded by uncertainty about both existing and proposed renewable policy – and the “alarmingly” frequent refinement of renewable policy settings.

  • Potential investors in both fossil fuelled and (large scale) renewable generation are behaving in a logical and rational way. They will not invest unless they can mitigate investment risk through oligarchic relationships or other long-term hedge arrangements.

  • The investment challenges presented by volatility and uncertainty will be compounded by rapidly falling Solar PV costs and poor policy choices of Government.

  • Continued proliferation of Solar PV, which appears inevitable, will also present real challenges for current retail and network pricing policies in the very near future.

    • Even without subsidies, Solar PV users will reduce their annual electricity costs under current tariff policies.

    • But current network technology cannot cope with rapidly changing 2-way flow of energy in the low voltage networks. Substantial investment in networks will be required to monitor (and possibly control) varying load; and to allow network operation to accommodate highly variable 2-way energy flow.

  • But who then pays for supply volatility risk and network services?

    • AC using households have benefited from archaic (network and retail) tariff policies for decades.

    • Solar PV using households are benefitting from the same archaic tariff policies.


ad