The new levels of the default tariff cap have been announced by Ofgem.
Leccy: was £882.08, will be £840.28
Gas: was £878.79, will be £797.36
The breakdown’s components have altered; in case there was anyone left who was still following, there probably isn’t now.
Source: from tab 1c Consumption adjusted levels on “Final levelized cap rates model (Annex 9) 1 July to 30 September 2025_0.xlsx” from this page.
So, OC (operating costs) have gone, PAAC and PAP have gone (Payment method Adjustment Additional Charge and Payment method Additional Percentage); the smart meter net cost charge (SMNCC) has shrunk markedly, AA (adjustment allowance) has gone; new in the charts are IC, CO and DRC. “Industry charges”, “Core operating costs”, and “Debt-related costs.”
To this we must add VAT at 5%, which gets us:
Old tariff cap: £1849
New tariff cap: £1720
Miliband’s original, and I have decided, impossible (under his own terms) promise was to reduce bills by £300. That, I said, was off the July-September 2024 tariff cap of £1568. The bill, in other words, needed to go down to £1268 to fulfil the promise. The present £1720 means that an additional £452 savings are necessary to achieve it.
Finally, I may note that at the previous tariff cap, you could not slide a plastic £5 note between the “typical” household’s gas and electricity bills (£923 and £926 inc. VAT, respectively). However, we now can slip said fiver between, and much more.
| Apr-Jun ’25 | Jul-Sep ’25 | |
| Leccy | £926 | £882 |
| Gas | £923 | £837 |
Gas is now £45 cheaper than leccy. Of course, a fall in the price of gas has a larger effect on the cost of a domestic gas bill, as it is a far larger proportion of the bill. That makes it difficult to see how a war on gas exploitation in this country is going to drive down the overall domestic energy bill.
Note
The above costs are based on 2.7 MWh of leccy and 11.5 MWh of gas. [Lower usage than originally used for the price cap: was 3.1 MWh / 12 MWh.]
And yes, heat pumps are more efficient than gas, but here we are looking at a typical household using 4 X as much energy from gas as it does from leccy. [And the typical household is not yet suffering the heat pump blues.]
Featured image
I asked the AI to draw me a Penrose triangle. It replied with a square, but I kinda like it.
Climate Scepticism 
The electricity price for domestic consumers is now back to about 4x the price of Natural Gas per (purchased) kWh.
https://www.ofgem.gov.uk/information-consumers/energy-advice-households/energy-price-cap
So much for Mad Miliband Jnr’s “NINE times cheaper” click-bait claim. (Albeit he was referring renewables-generated electricity vs Nat Gas generated ‘leccy. But he was too dim to qualify that he meant Nat Gas generated ‘leccy)
https://x.com/Ed_Miliband/status/1562444641236316161
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Here’s what ChatGPT came up with:
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Jit,
If I wasn’t tired after a long drive (as well as being lazy) I could probably track down the remaining acronyms cited in the new cost levels. However, can we still establish from these figures whether the cost of renewables is still playing a substantial role in the price of our energy, and can we establish if that’s a cost that is going up or down?
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I think this goes a long way towards answering my question:
“Net Zero Restricts Bill Cuts in Price Cap Change
Although bills have fallen, electricity bills have fallen by less than gas bills.”
https://davidturver.substack.com/p/net-zero-restricts-bill-cuts-in-price-cap-change
…gas bills that have fallen 9.3% or £81 since the last price cap was announced. Of the (ex-VAT) total of £797, £408 is the actual price of gas, £351 is other costs such as the cost of the gas network, operation costs of the suppliers and profit. Our gas bills also include £39 of Net Zero related costs. These form part of the Policy Costs in our gas bills and include the Energy Company Obligation (ECO) partly designed to reduce carbon dioxide emissions and the Green Gas Levy that funds the production of biomethane.
Electricity bills (ex-VAT) have fallen by only 4.7% or £42 since the last price cap to £840. Note that the percentage reduction is only about half the reduction in our gas bills, which indicates that factors other than gas are having a significant impact on electricity bills.…
…Net Zero costs have risen by £167 from October 2018 to £389 in the latest price cap. ROC and FiT costs have remained stable, whereas the estimate for CfD costs have gone up from £2.3bn to £2.5bn in the latest price cap. When the gas price falls, the subsidies from CfDs increase so the generators maintain their fixed strike price.…
…Conclusions
The gas price certainly has an impact on our electricity bills. However, Net Zero is having a much bigger impact. In fact, we can argue that Net Zero has led to a smaller reduction in electricity bills than we might have expected from the fall in the gas price.
We can expect Net Zero costs to increase substantially as more intermittent renewables are added to the network and the grid is expanded to accommodate them. It certainly looks like Miliband wants to step off the roller coaster and board a rocket to the moon.
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Joe, from the data up top, we have: Leccy cost = £882, energy used 2.7 MWh, => £0.327 / KWh.
Gas cost = £837, energy used 11.5 MWh, => £0.073 / KWh.
0.327 / 0.073 = 4.49
So the ratio of costs as provided to the householder is, as close as dammit, 4.5 : 1. Therefore only an idiot would use electricity for direct heating. (And unless your heat pump is very efficient, you’re still losing there.)
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Mark, you ask about the contribution of renewables. As you know, CfD is included in the wholesale price of leccy, which has gone down. However, the cost of the CfD component has gone up slightly (about £2). The Network Costs and Policy Costs as estimated by Ofgem are unchanged for the quarter.
Regarding the new abbreviations, I hope I explained them all.
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Robin, your AI is better than the one built into WordPress. However, its image has disappeared. It was certainly a triangle, and I think it was close to a Penrose in most places, but not all.
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Jit, I asked it again and got this:
Simpler than its last effort, but more accurate.
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“Ofgem Asleep at the Wheel
Consumer energy debt rising as energy suppliers fail financial resilience tests”
https://davidturver.substack.com/p/ofgem-asleep-at-the-wheel
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