This short summary arose out of a discussion with a renewable energy expert, Trevor Berrill, about the SEQEB disoute of 1985. We were attempting to understand the nature of the electricity system and the role it played in the dispute.
Summary Report Based on discussion with Tervor Berrill
Introduction
During the 1980s Queensland’s electricity system was dominated by large coal-fired power stations coordinated through an increasingly centralised state grid. The period also saw major industrial conflict, debates about privatisation and centralisation, and the continued importance of regional generation including sugar mill co-generation.
Development of the Queensland Grid
Queensland’s electricity system evolved from isolated municipal systems into a statewide interconnected grid. Early stations such as Bulimba Power Station supplied tramways and Brisbane municipal demand, while later stations such as Tennyson expanded metropolitan supply. By the postwar period the Queensland Electricity Commission (QEC) was coordinating generation and transmission across much of the state.
The grid increasingly relied on high-voltage transmission infrastructure linking coal-fired stations in Central and South East Queensland to industrial and urban loads.
Major Power Stations of the Era
- Bulimba Power Station: Originally associated with Brisbane’s tramways and municipal electricity supply.
- Tennyson Power Station: Expanded supply capacity for Brisbane and surrounding suburbs.
- Swanbank Power Station: Located near Ipswich coalfields and linked to heavy industry and regional demand.
- Tarong Power Station: One of the major coal-fired stations developed to meet growing statewide demand.
- Callide Power Station: Central Queensland coal-fired generation supporting regional and grid supply.
- Gladstone Power Station: Closely tied to industrial development including aluminium refining and heavy industry.
- Collinsville Power Station: Northern Queensland coal-fired station supplying regional industry and towns.
Sugar Mills and Cogeneration
Queensland sugar mills played an important role in regional electricity supply through bagasse-fired co-generation. During the crushing season mills generated surplus electricity which could be exported into regional networks.
Individual mills could export substantial amounts of electricity, in some cases tens of megawatts. These embedded generators required coordination with electricity authorities because sudden reductions in generation could affect supply-demand balancing.
Grid Connection Agreements and Solar Power
When domestic photovoltaic systems first began connecting to the Queensland grid around 2000, early grid connection agreements reused provisions originally developed for much larger embedded generators such as sugar mills [eg Trevor Berrill’s PV system agreement].
This created impractical requirements for small household systems, including obligations to notify the electricity authority when generation ceased. Such rules made sense for industrial co-generation plants exporting tens of megawatts but were disproportionate for small rooftop systems of around 1–2 kilowatts.
SEQEB and Industrial Conflict
The SEQEB dispute of 1985 became one of the defining industrial conflicts in Queensland history. The state government dismissed striking electricity workers in a bid to introduce contract labour and to privatize the electricity industry in Queensland.
Emergency legislation including continuity of supply provisions was used to maintain electricity services turned off by power operators to force the government to re-instate sacked linesmen and cable jointers. The dispute highlighted the strategic importance of electricity generation and distribution infrastructure within Queensland society and industry.
Centralisation and Industry
By the late twentieth century Queensland had largely transitioned from fragmented municipal generation systems into a highly centralised electricity network dominated by large coal-fired power stations and coordinated transmission infrastructure.
Heavy industry, rail electrification, mining, aluminium production, and urban expansion all contributed to increasing electricity demand across the state.
Conclusion
Queensland’s electricity history reflects the transition from local generation systems to a coordinated statewide grid. The 1980s represented a peak period of centralised coal-fired development, industrial expansion, and political conflict arising from privatisation of energy infrastructure.
Ian Curr
17 May 2026