Grid Balancing Costs Set to Rise To £8 Billion By 2030

From NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

OFGEM claim that their £80 billion electricity grid upgrade will end up actually reducing bills, by reducing constraint payments.

NESO’s latest review below of balancing costs show this to be an outright lie:

https://www.neso.energy/industry-information/balancing-costs

In 2024/25, total balancing costs hit £2.7 billion, of which £1.7 billion arose from constraint payments. Prior to the Climate Change Act, these balancing costs would have been inconsequential.

Grid upgrades will add about £9 billion a year to bills by 2031. Self evidently, this cost will far outweigh any potential savings. What they might do, of course, is reduce the cost of future constraint bills, which are projected to massively increase:

NESO project that constraint payments could rise to £7.2 billion in 2030, before OFGEM’s £80 billion grid upgrades kick in, dropping back to £2.9 billion in 2031.

In other words, after the upgrades, constraint payments will be just as high as now. If we don’t upgrade, constraints will increase. If we do, network charges will increase.

Either way, our bills go up!

Significantly, NESO state that constraint payments will resume their upward increase after 2031, as more renewables come on stream. This will require yet more grid upgrades, a never ending roundabout it seems!

In fact, NESO have underestimated long term constraint costs.

This is how they define them:

So, for example, there is a lot of surplus wind power in Scotland at times, but not enough transmission capacity to take it south to markets. In large part, OFGEM’s upgrades are intended to solve this problem.

But there is a much bigger problem looming, that no amount of grid upgrades will cure – soon, there will be far more power on the grid on windy/sunny days than there is demand for.

In their Clean Power 2030 Report, NESO reckoned we would have to throw away 83 TWh of excess wind and solar power in 2030 – 22 TWh curtailed and 61 TWh exported at a loss (they hope!).

Last year, the figure was 9 TWh.

NESO stressed in their report that their projections assumed full implementation of OFGEM’s network upgrades, so existing bottlenecks are not to blame for the 83 TWh of wasted power.

Indeed, the Counterfactual scenario, which assumes no accelerated progress, is virtually constraint free – the £80 billion upgrades will do their job.

The extra constraint costs are the direct consequence of building out more and more renewables.

So, let’s recap:

  • OFGEM want to spend £80 billion on upgrading the grid in the next five years, adding £9 billion to electricity bills.
  • Expansion of intermittent renewable capacity to meet Net Zero targets will necessitate wasting billions of pounds worth of power, when it is too windy or sunny.
  • Post 2030, tens of billions more will need to be spent to cope with increasing renewable capacity.
  • Far from reducing bills, this never ending cycle of increasing renewable capacity/upgrading the grid will inevitably increase them.

Nobody in their right mind would have designed such a system. Unfortunately by the time of the next election, most of the damage will be irreversible.

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Neil Pryke
May 1, 2026 6:25 am

“NESO’s latest review below of balancing costs show this to be an outright lie…”

Delivered by our very own, home-grown, outright liar…

Reply to  Neil Pryke
May 1, 2026 8:38 am

You mean Fintan Slye? He’s Irish.

Reply to  Neil Pryke
May 1, 2026 1:21 pm

Can’t argue the fact, hey !! 😉

May 1, 2026 6:31 am

It appears now that this entire massively expensive project was planned and built without competent project management.

Bruce Cobb
May 1, 2026 6:32 am

“Upgrading the grid”
Translation: “Money we have to spend in order to put more and more Retardables on the grid”.

atticman
Reply to  Bruce Cobb
May 1, 2026 9:58 am

More like “Money we have to spend to get power from where it’s generated in the middle of nowhere to where it’s actually wanted”.

Whatever happened to generating near to the consumers as used to be the case?

Colin Belshaw
Reply to  atticman
May 1, 2026 2:07 pm

But doesn’t this just indicate that politicians and civil servants responsible for energy policy and implementation are clearly . . . not qualified to do so?!
Who in their right bloody mind would approve capital expenditure for capacity installation when they KNOW – or do they?!! – that current grid installations would NOT be able to handle that generation?!!
And somebody who undoubtedly has no bloody clue at all is the complete idiot that is Miliband – he went to a wonderful university, gaining a PPE, which means he’s entirely science and engineering illiterate, notwithstanding he’s never held a position of real-world accountable responsibility in his entire bloody life!!

May 1, 2026 6:53 am

“OFGEM want to spend £80 billion on upgrading the grid in the next five years, adding £9 billion to electricity bills.”

Who pays the rest, the government? It would be a lot more honest if they just put all of that on the electric bills. If they put 100% of the true cost for ruinables on the electric bills, they’re would be a violent revolution.

Reply to  Joseph Zorzin
May 1, 2026 8:39 am

It’s what we’ll pay to finance and operate it annually.

Reply to  Joseph Zorzin
May 1, 2026 9:43 am

Who pays the rest, the government?

The government has no money of it’s own.

It’s taxpayers that pick up the bill

Reply to  Redge
May 2, 2026 4:01 am

The network companies are private businesses, so they raise money from shareholders and via bonds. They are regulated monopolies, with revenue tied to the size of their asset base, not to how much bits of it are used. OFGEM decides which projects for expansion and maintenance are permitted.

The result is huge incentives for poor value investment and high costs that get billed to consumers.

May 1, 2026 6:57 am

‘Nobody in their right mind would have designed such a system. Unfortunately by the time of the next election, most of the damage will be irreversible.’

I need a link to a quick primer on the basics of UK energy market operations that answers at least the following questions:

Is energy scheduled into the grid in advance?

Are there penalties to wind / solar and/or conventional suppliers if they can’t deliver?

Does excess wind / solar supply get paid for pursuant to ‘must take’ rules?

When total energy production exceeds demand, are curtailment payments made to wind / solar and/or conventional suppliers?

Are grid tie-ins for wind / solar projects paid for by their owners or by ratepayers at large?

Etc.

In other words, I know the system is heavily rigged in favor of wind / solar, so the question is, what are the greatest departures from a level-playing field that could be remedied quickly by changing the current rules, presuming Labor ever gets tossed out?

Petey Bird
Reply to  Frank from NoVA
May 1, 2026 8:06 am

Even without financial analysis it is hard to believe that a costly transmission improvement can pay off if the energy transmitted is not available in response to load demand. A transmission line has to deliver useful energy to pay off.
Of course the Net Zero pricing policies and contracts are detached from reality anyway.

Reply to  Petey Bird
May 1, 2026 8:43 am

The lines will spend a lot of of time not transmitting at all. Then they will spend more time delivering power of low or even negative value for export. The economics are horrendous. It’s cheaper just to curtail.

Reply to  Petey Bird
May 1, 2026 11:22 am

‘A transmission line has to deliver useful energy to pay off.’

Yes, in prior times, ‘used and useful’ was the hurdle a transmission operator (TO) nominally needed to clear before the independent system operator (ISO), or some other authority, allowed the asset to be included in rates. I assume this hurdle has now been largely cast aside for political reasons in order to build out wind / solar.

Reply to  Frank from NoVA
May 1, 2026 11:41 am

A lot of questions.
The GB grid is self-dispatch, leaving NESO to reorganise after gate closure an hour ahead via the Balancing Mechanism (BM). Redispatch 8s now often over 10% of demand.

Imbalances against final nominations/contract volumes are charged at system Balancing price, which is informed by the pay as bid prices on balancing actions.

Most renewables contracts have a lot of volume flexibility, even up to pay for as delivered (though there will be a discount for taking imbalance risk). Dispatchable generation (including biomass, nuclear) is on more rigid terms.

Paid curtailment is via the BM at bid prices which tend to allow for loss of subsidy through not generating, so the highest subsidies don’t get curtailed unless operationally essential. CFD rules limit or eliminate subsidy when day ahead market price is negative: the detail is complex. ROC and Feed in Tariff subsidies are paid regardless. Those that end up with no subsidy will voluntarily curtail when price is negative, so paid curtailment volumes underestimate the total.

All BM participants can bid/offer to adjust generation or demand within their operational envelope. NESO select the “cheapest” options (i.e. not counting subsidy costs paid by consumers) subject to maintaining secure grid operations. There are special rules and markets for some elements of battery operations, “demand flexibility” and ancillary services.

Renewables will pay for connection to shore and a good chunk of the grid connection point substation. They pay very little for onward transmission. 75% of transmission costs are allocated to consumption up front, with partial allocation of some of the rest.

There are lots of ways the rules could get changed. Currently OFGEM, NESO and DESNZare working to make them more favourable to renewables, so there will be a lot to unwind, and courtroom battles over the consequences.

Reply to  It doesnot add up
May 1, 2026 2:07 pm

Thank you! This will keep me out of trouble for a while…

Sparta Nova 4
May 1, 2026 6:59 am

I was taught half a century ago, in engineering, cost is an independent variable.
Translation: cost is a design parameter.

Half a century ago, engineers were not given visibility into the cost of their designs.
I attended meetings where cost was addressed.
I asked for a priced bill of materials for my new design. I was refused.
I got a copy via a back door. To my surprise there were piece part costs that did not align with the value in the circuits.
I attended the next cost meeting. When everyone else had spoken (most came up empty), I announced that certain changes in the circuit (did not affect performance) reduced the cost below the cost target.
From that day forward I was always given priced bills of materials.

It was afterward that corporation held cost accounting classes for engineers and taught cost as an independent variable.

Due to executive mismanagement, this company (once a major aerospace corporation) closed its doors for good.

The root cause was leadership that had no understanding of basic economics.
Kind of like what is going on in the Net Zero idiocracies.

strativarius
May 1, 2026 8:12 am

Labour’s election promise…

Everything will be more expensive than everything else. Guaranteed.

Remember, there is a[n imaginary] climate crisis going on in which new enemies of the planet’s wellbeing are continually being identified and dealt with – ie banned – the latest being the tumble dryer.

For it is written in the Green scriptures: Nullum pretium nimis magnum est planetae

for the planet no price is too great.

Dave Andrews
Reply to  strativarius
May 1, 2026 8:22 am

Apparently far from tumbling tumble dryer sales have soared since the announcement. 🙂

strativarius
Reply to  Dave Andrews
May 1, 2026 9:04 am

Miliband isn’t the sharpest knife in the drawer.

atticman
Reply to  strativarius
May 1, 2026 10:03 am

And that’s putting it bluntly!

James Snook
Reply to  Dave Andrews
May 1, 2026 9:33 am

Mine is a twenty five years old condenser model that still works well (AEG and weighs a ton), but it must be running on borrowed time.

This announcement has prompted a change to a new but similar model before Climate Commisariate bans them outright.

ResourceGuy
May 1, 2026 9:05 am

Is that in addition to third world type energy subsidies for the general population?

Reply to  ResourceGuy
May 2, 2026 4:07 am

Those are not paid to the general population, but used to help elevate the after benefits incomes of those paying little to no tax above the incomes of others who work(ed) for a living and paid taxes and bills. Such indolence is more prevalent among immigrant populations.

KevinM
May 1, 2026 11:58 am

“there is a lot of surplus wind power in Scotland at times, but not enough transmission capacity to take it south to markets”
$9B/year would buy a lot of wire.

atticman
Reply to  KevinM
May 1, 2026 1:30 pm

And pylons to desecrate the landscape.

Dave Andrews
Reply to  atticman
May 2, 2026 7:27 am

Travelling to South Wales a couple of years ago virtually all the rural areas and many rural towns were festooned with ‘NO PYLONS’ posters

Reply to  KevinM
May 2, 2026 4:11 am

But it isn’t worth building. Already much of the surplus has low to negative value. That will get much worse as giant wind farms off Yorkshire finally come on line: Sofia, Dogger Bank A, B and C, Hornsea 3.

Bob
May 1, 2026 1:38 pm

This is so stupid. Wind and solar need to be treated the same as fossil fuel and nuclear, you generate the amount of energy that is required no more no less. If there is less demand dial back your generation if there is more demand dial up your generation. If you can’t do this get the hell out of the business.

ferdberple
May 1, 2026 6:30 pm

Paying renewable to not produce excess is no different than paying farmers to not produce to keep prices high. Paying workers to not work, so there will be jobs for everyone.

Victor
May 2, 2026 9:27 am

The increasing costs of electricity production don’t matter because it is the customers who have to pay the increased costs.
The customers have nothing to say because it’s a electricity grid monopoly.