Australia’s energy sector, followed closely

Energy Supply Australia is an independent publication about the Australian energy system — the grid, the market, and the companies driving the transition. We cover power, wind, solar, nuclear, gas and storage the way people inside the industry actually talk about them: with the numbers left in, the jargon taken out, and no press releases dressed up as news. If it changes how the country makes, moves or pays for energy, we’re writing about it.

WA’s SWIS grid: an island with no way to call for help Grid & Storage

WA’s SWIS grid: an island with no way to call for help

There's no button in Perth marked 'call for help.' If a generator trips on the South West Interconnected System on a stinking February afternoon, there's no interconnector to lean on,…

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Has the Australian gas industry been written off too early?
Policy & Markets

Has the Australian gas industry been written off too early?

Santos paid a dividend again this year off Cooper Basin and Moomba gas that most of the transition…

By Marcus Wren · 13 Sep 2026
Pumped hydro versus batteries: what actually firms the grid
Grid & Storage

Pumped hydro versus batteries: what actually firms the grid

Two thousand megawatt-hours. That's roughly what Genex Power's Kidston pumped hydro scheme, built into an old gold mine…

By Anjali Rao · 12 Sep 2026
Renewable Energy Zones: the plan behind the pushback
Grid & Storage

Renewable Energy Zones: the plan behind the pushback

Drive the Golden Highway out past Dunedoo on a quiet Sunday and you'll see the survey pegs before…

By Anjali Rao · 9 Sep 2026
The Default Market Offer and your power bill, explained
Policy & Markets

The Default Market Offer and your power bill, explained

1 July. That's the date the Default Market Offer resets every year, whether anyone notices or not. Most…

By Marcus Wren · 7 Sep 2026
Gas peakers versus big batteries: who firms the grid?
Grid & Storage

Gas peakers versus big batteries: who firms the grid?

Six-fifteen on a still, hot evening in late January. Rooftop solar has fallen off a cliff, air conditioners…

By Anjali Rao · 7 Sep 2026
How the Capacity Investment Scheme actually works
Policy & Markets

How the Capacity Investment Scheme actually works

32 gigawatts. That's the number the Commonwealth put on the table when it expanded the Capacity Investment Scheme,…

By Marcus Wren · 6 Sep 2026

Companies

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Tesla Energy Australia: Powerwall, Megapack and the SA VPP now
Companies

Tesla Energy Australia: Powerwall, Megapack and the SA VPP now

Two Powerwalls hung dark on the garage wall of a townhouse off Sherriffs Road in Reynella last month,…

By Priya Nair · 17 Sep 2026
Zen Energy Australia: the retailer standing in Whyalla’s shadow
Companies

Zen Energy Australia: the retailer standing in Whyalla’s shadow

Two numbers to start. Zero: the count of turbines, cells or transformers actually energised at Zen Energy's flagship…

By Marcus Wren · 29 Aug 2026
Ampol’s AmpCharge gamble: EV chargers on the servo forecourt
Companies

Ampol’s AmpCharge gamble: EV chargers on the servo forecourt

Pulled into an Ampol on the Hume Highway just south of Yass a few weeks back, mid road…

By Sofia Marchetti · 29 Jul 2026

Solar

More Solar →
Tesla Energy Australia: Powerwall, Megapack and the SA VPP now
Companies

Tesla Energy Australia: Powerwall, Megapack and the SA VPP now

Two Powerwalls hung dark on the garage wall of a townhouse off Sherriffs Road in Reynella last month,…

By Priya Nair · 17 Sep 2026
Rooftop solar versus a home battery: which pays back first
Solar Power

Rooftop solar versus a home battery: which pays back first

A homeowner in Reservoir rang me last month with a quote in hand: 10kW of rooftop solar plus…

By Priya Nair · 13 Aug 2026
How rooftop solar feed-in tariffs actually work in 2026
Solar Power

How rooftop solar feed-in tariffs actually work in 2026

Check your solar retailer's rate card right now and you'll probably see two numbers that don't look like…

By Priya Nair · 11 Aug 2026

Grid & Storage

More Grid & Storage →
WA’s SWIS grid: an island with no way to call for help
Grid & Storage

WA’s SWIS grid: an island with no way to call for help

There's no button in Perth marked 'call for help.' If a generator trips on the South West Interconnected…

By Anjali Rao · 17 Sep 2026
Snowy 2.0: past $12bn, Florence stuck, and the timeline again
Grid & Storage

Snowy 2.0: past $12bn, Florence stuck, and the timeline again

Somewhere under the Snowy Mountains right now, a tunnel boring machine named Florence is grinding through rock that…

By Anjali Rao · 15 Sep 2026
Pumped hydro versus batteries: what actually firms the grid
Grid & Storage

Pumped hydro versus batteries: what actually firms the grid

Two thousand megawatt-hours. That's roughly what Genex Power's Kidston pumped hydro scheme, built into an old gold mine…

By Anjali Rao · 12 Sep 2026

Policy & Markets

More Policy & Markets →
Rooftop solar grid stability: the honest read
Policy & Markets

Rooftop solar grid stability: the honest read

Twenty-four gigawatts. That's roughly where Australia's rooftop solar fleet sits now, spread across more than four million homes…

By Marcus Wren · 14 Sep 2026
The Safeguard Mechanism: who’s really carrying the cost
Policy & Markets

The Safeguard Mechanism: who’s really carrying the cost

215 facilities. That's the current population of the Safeguard Mechanism, the scheme that's supposed to be the sharp…

By Marcus Wren · 14 Sep 2026
Has the Australian gas industry been written off too early?
Policy & Markets

Has the Australian gas industry been written off too early?

Santos paid a dividend again this year off Cooper Basin and Moomba gas that most of the transition…

By Marcus Wren · 13 Sep 2026

The desk

Energy Supply Australia is written by a small team that covers the grid, the market and the companies building the transition. No wire copy, no press releases dressed up as news.

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