The impact of rooftop solar on wholesale electricity demand in the Australian National Electricity Market

Guan Yan*, Lin Han

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Solar energy from rooftop photovoltaic (PV) systems in Australia’s National Electricity Market (NEM) has been continuously increasing during the last decade. How much this change has affected power demand from electricity networks is an important question for both regulators and utility investors. This study aims to quantify the impact of rooftop solar energy generation on spot electricity demand and also to forecast power system load in the post-covid-19 era. Using half-hourly data from 2009 to 2019, we develop a novel approach to estimate rooftop solar energy generation before building regression models for wholesale electricity demand of each state. We find that the adoption of solar PV systems has significantly changed the levels and intra-day patterns of power demand, especially by reducing daytime power consumption from the grid and creating a “duck curve”. The results also show that most states in the NEM would see decreased electricity demand during 2019–2034.

Original languageEnglish
Article number1197504
Pages (from-to)1-17
Number of pages17
JournalFrontiers in Energy Research
Volume11
DOIs
Publication statusPublished - 2023

Bibliographical note

Copyright © 2023 Yan and Han. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • energy transition
  • renewable energy
  • rooftop PV
  • solar energy
  • spot electricity demand

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