The Three Layers of the Energy Market

Australia's electricity supply chain has three distinct layers: generation (power plants), transmission & distribution (poles and wires), and retail (the company that sends you a bill). Your energy retailer is only the last piece of the puzzle.

1. Energy Generators

Power stations produce electricity from coal, gas, hydro, wind, and solar. They sell this electricity into the National Electricity Market (NEM), which covers QLD, NSW, ACT, VIC, SA, and TAS. WA and NT are on separate grids.

2. Network Distributors

Distributors own the poles, wires, and pipes that bring energy to your home. You cannot choose your distributor — it is determined by where you live. Common distributors include Ausgrid, Endeavour Energy, Essential Energy (NSW), Jemena, Citipower, Powercor (VIC), Energex, Ergon (QLD), SA Power Networks (SA).

Network charges make up around 40–50% of your electricity bill, which is why location matters for pricing.

3. Energy Retailers

Retailers buy electricity from generators, pay network charges to distributors, and sell you a combined plan. You can choose your retailer. Major retailers include AGL, Origin Energy, EnergyAustralia, and smaller players like Red Energy, Powershop, and Alinta.

National Electricity Market (NEM)

The NEM is the wholesale electricity market that balances supply and demand in real time. The Australian Energy Market Operator (AEMO) runs the NEM and sets the wholesale price every 5 minutes. When wholesale prices spike (e.g. during heatwaves), retailers pass some of that cost through to customers on variable-rate plans.

Types of Energy Plans

Flat Rate (Single Rate)

One price for electricity regardless of the time of day. Simple and predictable, but you miss out on cheaper off-peak rates.

Time-of-Use (ToU)

Different prices for peak, shoulder, and off-peak periods. Typical in NSW and VIC. Can save money if you shift usage to off-peak times (e.g. running appliances at night).

Demand Tariffs

A charge based on your highest usage in a 30-minute window during peak times. Common in QLD. Best avoided if you have high-usage appliances running during peak hours.

Key Terms

Usage charge (c/kWh) — The rate you pay per unit of electricity consumed.
Supply charge (c/day) — Daily fixed fee to be connected to the grid.
Feed-in tariff (c/kWh) — The rate your retailer pays you for solar exports to the grid.
Solar Fit — Solar feed-in tariff; the credit you receive for solar power you send back to the grid.
VDO — Victorian Default Offer; a price cap set by the Essential Services Commission in Victoria.
DMO — Default Market Offer; the default price cap set by the AER for NSW, SA, and QLD.

Why 2026 Bills Are Moving Down (Mostly)

Retail prices follow wholesale costs with a lag, and 2026 is the first year in a while where most default prices fell. The AER's 2026–27 DMO is 3.4–5.0% lower in NSW and 7.2% lower in SE QLD, Victoria's VDO fell about 5% to a typical $1,591, and only South Australia rose (1.4%). The drivers: lower wholesale electricity prices as renewables expand, falling network costs in some regions, and government reforms to the DMO that cap retailers' ability to load marketing costs onto default customers. Understanding this mechanism matters — because market offers only fall if you renegotiate or switch.

The Solar Sharer Offer: A New Market Mechanic

The biggest structural change of 2026 is the Solar Sharer Offer (SSO), introduced with the DMO reforms. Retailers in DMO areas must offer a plan with three free hours daily — 11am–2pm in NSW and SE QLD, 12pm–3pm in SA — with up to 24 kWh free in the window. It is opt-in, needs a smart meter, and does not require solar panels. It exists because midday solar generation now regularly pushes wholesale prices to zero or negative; giving households free power in that window smooths demand into the solar glut. It is a genuine new lever for cutting bills, but only if you can shift usage into the window.

How to Use This Knowledge

Know your distributor and which reference price applies to you.
Check whether your current plan beats the reference price by 15% or more.
Ask whether your retailer offers the Solar Sharer Offer.
Understand your tariff type before comparing time-of-use plans.
Revisit the market every 12 months — loyalty is rarely rewarded.