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Deregulation of the energy industry occurs when the government of a particular state or territory undergoes restructuring to allow private companies to enter the energy market and set their own retail electricity and gas prices. In Australia, the government has allowed both natural gas and electricity deregulation in several states and regions.
Deregulation does not affect the energy supply for the country; rather, utility companies can purchase energy at wholesale prices and package it into plans for customers. When there are more companies to choose from in the market, businesses and residential customers can compare energy plans and choose one that suits their energy needs.
More competition can also result in potentially more competitive prices for customers, but there are still rules that govern how energy providers can operate even in deregulated areas. These rules are enforced by state and national regulators and National Energy Law.

Deregulated energy markets may result in more competition from brands and increased options for you to choose from. Different options mean you may be able to find a tailored plan that suits your needs for:
Generally, the state governments are responsible for their energy sector; this includes deregulation. While several states have deregulated their energy markets, not every state or territory has.
For example, in Western Australia (WA), the retail gas market is fully deregulated in Perth. However, electricity is still provided for most customers by government-owned provider Synergy.1 Synergy services the south-western region of WA, known as the South West Interconnected System (SWIS). Areas outside of SWIS are contestable, so large businesses may be able to choose their own retailer, but residential and small business customers are still restricted to Synergy.
Both WA and the Northern Territory (NT) have self-contained electricity grids and are regulated electricity markets. This is because these states have smaller populations spread out over a wide area, making it difficult for private energy providers to set up shop and be profitable without excessively charging customers. However, even in regulated electricity markets, energy providers are still allowed to offer discounts on official pricing.
The other states are deregulated energy markets – to varying degrees. Some of these have multiple private companies operating within them, but the energy prices they offer customers are still somewhat regulated:
Currently, not everywhere in Australia is deregulated, but in some cases, this can actually be a good thing. It’s true that regulated markets don’t give you much choice when it comes to what plan you’re on or which provider you’re with for your electricity and gas.
However, it does mean Australians in remote parts of the country won’t be financially penalised for the additional expense of transporting energy to their property.
In deregulated markets, distributors charge energy retailers for this cost, who then usually pass it on to their customers. In places like the NT and WA, energy customers may be spread far and wide, meaning the cost of transporting electricity can be much higher than in denser populated areas.
But with a regulated market, customers might still pay a similar rate to others, regardless of their energy provider and how far away they live from a major city.
In 2019, the Australian Government introduced the Default Market Offer (DMO) in South East QLD, NSW and SA.2 The DMO acts as the maximum annual cost customers should pay on a default energy contract (also known as a standing offer contract) for each distribution zone.
This means these ‘price caps’ will differ depending on where you live.
The DMO also acts as the comparison price set by the AER for providers to set their electricity prices and discounts against. When displaying offers online or over the phone, providers, energy comparison services and energy brokers must disclose the annual cost of the product as a percentage below or above this benchmarkprice, so you’ll have an idea if you’re getting a good deal.
Victorians have a similar offer known as the Victorian Default Offer (VDO), which is the amount you’ll be charged on a standing offer plan and is considered a fair price to pay for electricity. It establishes a reference price similarly to the DMO when comparing against other plans.
Currently the Australian Government has appointed the ACCC to continue to monitor and report on the Australian gas markets.
As the Head of Energy at Compare the Market, Meredith O’Brien believes in educating Australian customers about the ever-changing gas and electricity market so they can adjust their energy usage habits and get the most out of their energy plans.
Meredith has seven years of experience within the energy industry, following 15 years in financial services. Meredith is a dedicated customer advocate who is passionate about empowering Australians to find the right products to suit their needs by removing the confusion from comparing.
1 Economic Regulation Authority, Western Australian Government. Can I choose my retailer? – Energy Consumer Guide. Accessed June 2026.
2 Australian Energy Regulator, Australian Government. Default market offer prices 2024-25. Published 2024. Accessed June 2026.