The truth is that electricity and gas prices have been rising much faster than the overall consumer price index since at least the end of 2007, with prices really shooting up over the past four years.

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Richardson has used the latest annual reports of AGL and Origin Energy to derive some astonishing figures for what consumers are paying for electricity and gas. On average, he calculates, AGL’s electricity costs households $377 a megawatt hour, while Origin households pay $343 a MWh.

So what are the costs that cause those electricity prices to be so high? He says the total retail price consists of five components. First is the cost of the generation of electricity by power stations, including the cost of the coal and a bit of gas used to power the generators.

Second are the “network costs” of moving the electricity from the power stations to homes, businesses and offices, first transmitted across the countryside by high-voltage power lines, then distributed by “poles and wires” at the local level.

The third component is an annual allowance for the depreciation of all the equipment, which must eventually be replaced. Fourth is “other costs” incurred by the electricity retail companies – most of it being the cost of advertising – and fifth is the retailers’ profit before interest payments and tax.

Now get this. Richardson calculates that, for every $100 paid by a retail customer of AGL, a mere $12 goes on generating the electricity. So much for the evil Russian invaders being the cause of the problem.

Next come network transmission and distribution costs of $34, $4 for depreciation and $15 for advertising and other retailing costs. Which leaves AGL’s retail company with a profit before interest and tax of a measly $35.

What! About 35 per cent of our bill goes on profit to the retailer? Woolies and Coles eat your heart out. Qantas – you’re not really trying.

According to Richardson’s calculations, Origin’s retail profit share is a bit lower at 29 per cent. Turning from electricity to gas, he puts AGL’s retail profit margin at 36 per cent, and Origin’s probably a bit higher.

Richardson’s conclusion that consumers are being gouged in the electricity market is consistent with the findings of Professor Allan Fels in his report for the ACTU earlier this year. Fels made the economists’ point that every company’s electricity is identical. It’s also something that every home must have.

So why do retailers need to spend so much on advertising, “inappropriate door-to-door marketing activities” and other forms of “obfuscation”, Fels asked.

And Richardson’s figuring reveals something else. The overcharging of household customers of electricity and gas involves requiring them to cross-subsidise AGL and Origin’s business customers. They pay prices for electricity and gas that are about half what household customers pay. And the profit margins extracted from business customers are tiny.

But why should economists and econocrats share the blame for all the inflationary price gouging that’s helped make the Albanese government so unpopular? Because all the malfunctioning we’re seeing has occurred under the National Electricity Market that the econocrats designed and still regulate, and assured us would be a great reform.

The wonder-working NEM has turned five state-government-owned monopolies into a national oligopoly dominated by just three huge operators – AGL, Origin Energy and the foreign-owned and tight-lipped EnergyAustralia. The three are highly “vertically integrated”, meaning they each own big slabs of the market’s three levels: generation, transmission network and retail provision.

The NEM is owned by the five state governments plus the feds – that is, by everyone and no one – and regulated by two separate government authorities using a rule book running to thousands of pages. But it seems to have been captured by the oligopolists.

The economists have done little to stop consumers across the nation from being grossly overcharged for electricity and gas. But not to worry. It’s only some politician that will be left carrying the can.

Ross Gittins unpacks the economy in an exclusive subscriber-only newsletter. Sign up to receive it every Tuesday evening.