The mainstream media is panicking again over National Grid’s capacity auctions. Journalists look at rising system management costs, scream about the risk of dark, cold winters, and demand immediate government intervention. They claim the system for avoiding blackouts is broken because it relies too heavily on old gas plants or failing battery economics.
They are wrong. The system is broken, but for the exact opposite reason.
The British energy grid is being choked to death by an expensive, artificial obsession with absolute reliability. By treating a single minute of localized power disconnection as an existential national crisis, regulators have built a bloated, hyper-subsidized monster that actively delays real market efficiency.
We do not need a more secure Capacity Market. We need to let the market fail occasionally so it can finally learn how to function.
The Flawed Premise of Absolute Reliability
Every year, National Grid ESO—now transitioning into the National Energy System Operator (NESO)—runs auctions to secure backup power. The logic seems simple: pay power stations a steady retainer fee just to stand by, ensuring that if wind drops and solar vanishes on a freezing January evening, the lights stay on.
This is the lazy consensus. It treats electricity as a public utility that must maintain a 100% uptime record, regardless of the economic distortion required to achieve it.
When you subsidize standby capacity, you insulate the market from reality. In a true market, scarcity drives high prices. High prices signal to consumers that they need to reduce demand, and signal to innovators that they need to deploy rapid-response solutions. Instead, the Capacity Market acts as a financial life-support machine for aging, inefficient gas turbines and encourages major industrial energy users to remain completely passive.
I have spent years analyzing grid data and watching corporate energy buyers navigate this framework. Companies routinely waste millions chasing artificial compliance metrics instead of building genuine, decentralized resilience. We have created a generation of energy managers who expect the state to guarantee their power supply, removing any economic incentive for them to invest in serious onsite storage or sophisticated demand-side response systems.
The Trillion-Pound Safety Net
To understand the scale of the distortion, look at how the Capacity Market actually functions. It operates on a metric known as the Loss of Load Expectation (LOLE). The current target for Great Britain is three hours per year. This does not mean three hours of national blackouts; it means three hours where the grid might need to utilize emergency measures or implement minor, controlled industrial disconnections.
To maintain this arbitrary three-hour safety margin, billions of pounds are stripped from consumers and handed to generation assets. In the recent T-4 auctions, clearing prices hit record highs. Who wins? Not the green transition. The primary beneficiaries are often legacy fossil-fuel assets and speculative battery developers who realize they can make more money collecting guaranteed availability payments than actually trading energy on the open market.
Consider what happens when you remove risk from a market. Capital flows not toward the most efficient or innovative solution, but toward the asset class that best exploits the subsidy framework.
- Subsidized Inertia: Old gas-fired plants that should be decommissioned are kept on life support because their capacity contracts guarantee profitability.
- Stifled Innovation: Long-duration energy storage technologies, such as liquid air or advanced pumped hydro, struggle to compete because the auction formats favor short-term, low-capital-cost assets.
- Suppressed Demand Response: Large industrial consumers have no urgent reason to develop automated, split-second demand reduction protocols because the grid artificially flattens the threat of scarcity.
The Mathematical Delusion of Value of Lost Load
Regulators justify this financial bloat by pointing to a metric called the Value of Lost Load (VoLL). In the UK, VoLL is conventionally calculated at around £17,000 per megawatt-hour. This is the theoretical economic damage caused to society if a megawatt-hour of electricity is suddenly cut off.
This calculation is fundamentally flawed. It treats all demand as identical. It assumes that cutting power to a high-tech semiconductor fabrication plant causes the same societal harm as cutting power to an empty office block's automated heating system at 8:00 PM.
By inflating the theoretical cost of a blackout, regulators make the Capacity Market look like a bargain. They argue that spending a few billion pounds on capacity contracts saves tens of billions in potential economic damage.
Imagine a scenario where we stop pretending all load is sacred. If the market were allowed to reflect true scarcity, prices would spike cleanly and dramatically during supply crunches. A factory that can afford to pause production for two hours would do so willingly to avoid paying £10,000/MWh, selling its allocated power back to the grid at an immense profit. This isn't a failure of the system; it is the system working perfectly.
By preventing these price signals from reaching their natural peaks, the Capacity Market kills the business case for deep, industrial demand-side flexibility. We are building a massive, underutilized army of backup generators when we should be building a flexible, intelligent consumer base.
The Downside of True Volatility
To be absolutely clear, abandoning the capacity safety net comes with a cost. If you remove the artificial floor and ceiling, you get extreme volatility.
For unhedged businesses and poorly prepared suppliers, this approach would be brutal. Some retail energy companies would collapse. Certain energy-intensive industries would face volatile monthly operating costs that defy traditional budgeting.
But this pain is a necessary cleansing mechanism. The current system socializes the cost of grid stability across every single household bill while privatizing the profits of standby generators. Forcing major energy users to face the true, unvarnished volatility of a renewable-heavy grid would compel immediate, massive private investment in microgrids, localized generation, and genuine demand management.
Dismantling the PAA Premise
When the public asks, "How can the UK prevent winter blackouts?", they are asking the wrong question. They are assuming that a blackout is the worst possible outcome.
The correct question is: "What is the optimal amount of unserved energy a modern economy should tolerate to keep energy affordable and transition efficient?"
The honest, brutal answer is that a zero-tolerance policy for power interruptions is an economic luxury we can no longer afford. When you attempt to build a grid with 100% variable renewable generation (wind and solar) while maintaining a 0% tolerance for blackouts, the math breaks down. You end up building a parallel, duplicate grid of fossil-fuel backup and massively over-specified battery fleets that sit idle 95% of the year.
We must replace the current framework with a multi-tiered reliability market.
- Tiered Grid Access: Industrial users should choose their reliability level. Want 99.999% uptime? Pay a massive premium for dedicated, non-subsidized backup infrastructure. Willing to be disconnected for up to 12 hours a year with 10 minutes' notice? Receive a heavily discounted or even negative transmission tariff.
- Uncapped Spot Prices: Remove the regulatory fear of high price caps in the wholesale market. Let prices hit astronomical highs during genuine shortages. This is the only way to make long-duration storage economically viable without relying on state handouts.
- Abolish the Capacity Auction: Stop handing out multi-year contracts based on bureaucratic models of what the grid might need four years from now. Let generators make their money by selling actual energy and ancillary services in real-time.
The ongoing scrutiny of Britain's blackout-prevention system misses the target entirely. The critics want to refine the auction mechanisms, alter the derating factors for batteries, or tinker with the eligibility of diesel generators. These are superficial fixes for a structurally broken philosophy.
Stop trying to patch the safety net. Rip it up, let the price signals sting, and watch how quickly the market innovates when survival replaces subsidy.
