Energyaustralia

An EnergyAustralia spokesperson said the project remained on track.

The country's top gas retailers are Origin Energy, AGL Energy and EnergyAustralia, owned by Hong Kong's CLP Holdings.

The data breach was the first of a wave of hacks last September and October that hit major Australian corporations including Medibank Private, EnergyAustralia and Woolworths.

Across NSW, some of the largest savings will be made by people who are supplied power by EnergyAustralia through the Endeavour Energy network.

EnergyAustralia pulled back from committing to a multi-decade deal to buy energy from the hydro, solar and wind project, throwing its financing into jeopardy as two key commitments expired.

But Turnbull’s reset on energy, which included rules to cap default electricity prices for customers and increase financial penalties for the big three energy suppliers – AGL, EnergyAustralia and Origin – was far more damaging to corporate profits.

In most state, the Big 3 retailers – AGL, EnergyAustralia and Origin – accounted for the majority of complaints recorded, with AGL leading for most states.