Economic Analysis and Policy 68 (2020) 363–378
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Economic Analysis and Policy
journal homepage: www.elsevier.com/locate/eap
Policy debates and controversies
The future of coal and renewable power generation in
Australia: A review of market trends
Jeremy Webb
a,∗
, H. Nadeeka de Silva
a,b
, Clevo Wilson
a
a
School of Economics and Finance, Queensland University of Technology, Brisbane QLD 4000, Australia
b
Department Economics, Faculty of Humanities and Social Sciences, University of Ruhuna, Matara, Sri Lanka
article info
Article history:
Received 10 July 2020
Received in revised form 9 October 2020
Accepted 9 October 2020
Available online 16 October 2020
Keywords:
Coal and renewable energy
Cost of electricity generation: Market trends
Future of electricity generation
Australia
abstract
Recent estimates of the levelized cost of energy (LCOE) indicate a watershed moment
where market forces have become the foremost driver in the replacement of coal by
renewable sources. Current studies indicate an energy market is emerging in which not
only new renewable plants are more cost effective than new coal fired power plants
(CFPPs), but also the former is becoming more cost effective than existing CFPPS on a
levelized cost of energy (LCOE) basis. However, an accelerated retirement of existing
CFPPs depends both on the price received by power plants on a time weighted basis
and on the total cost of energy which, in addition to the LCOE, takes into account costs
of distribution and storage needed to overcome intermittent supply.
We use Australia – which is undergoing the world’s most rapid decarbonisation of
power consumption – as a case study to analyse the economics of this transition and
to identify its key drivers. In doing so, we provide an updated estimate of the LCOE for
renewable and non-renewable power sources for Australia. We confirm that, currently,
the LCOE of both solar PV and wind are substantially below that of coal.
It is pointed out that LCOEs are an imperfect metric to gauge the rate of transition
which will equally depend on total costs of energy and the prices received by energy
providers. However, accounting for total costs (most importantly the cost of intermit-
tency and distribution) we show that, combined with other types of non CFPP storage,
the time weighted average price received for renewable power is now above that of
CFPPs. In Australia, that is being reflected in purchasing power agreements and auction
prices for current and future commercial solar and wind projects. Taking into account
the strong and continuing downward trajectory of renewables’ total costs we find that
a market forces driven further acceleration of the retirement of Australian CFPPs could
occur if Government policy does not intervene.
© 2020 Published by Elsevier B.V. on behalf of Economic Society of Australia, Queensland.
1. Introduction
There is a mounting and at times highly charged debate over the future of what has, and still is, the world’s largest
energy resource — coal. With the continued fall in the LCOE of renewable energy and a flatlining of that of coal its future
as a power generation is now the subject of intense scrutiny.
1
There are growing number of studies projecting coal’s
∗
Corresponding author.
E-mail addresses: j11.webb@qut.edu.au (J. Webb), hasthimuninadeeka.desilva@hdr.qut.edu.au (H.N. de Silva), clevo.wilson@qut.edu.au
(C. Wilson).
1
For the purpose of this study reference to coal is on its thermal (power generating) usage. The future of coking coal is an issue for a separate
study.
https://doi.org/10.1016/j.eap.2020.10.003
0313-5926/© 2020 Published by Elsevier B.V. on behalf of Economic Society of Australia, Queensland.