· 8 min read
The hidden cost of outdated thinking
Every single day, Britain discards enough clean electricity to power Birmingham for an entire year. This isn't hyperbole—it's the devastating reality of a market system so antiquated it actively punishes success.
In 2022 alone, we threw away 6.2 TWh of Scottish wind power worth £2.4 billion (Carbon Brief, 2023). Not because the technology failed. Not because demand disappeared. But because our electricity pricing system—designed when coal was king—cannot comprehend renewable abundance.
This is not a technical failure. This is a catastrophic market design failure.
While California powers through 97 consecutive days of 100% renewable electricity and Texas leads the world in wind generation, Britain remains shackled to a 1990s pricing model that treats clean Scottish wind identically to dirty London gas. Despite renewables now providing over 40% of UK electricity, our market still genuflects to fossil fuel generators (National Grid ESO, 2023).
The bill for this institutional inertia is staggering: a looming £40 billion transmission investment black hole by 2035, £60 billion in clean energy projects hanging in the balance, and household bills artificially inflated by hidden subsidies for grid inefficiency (MIT Energy Initiative, 2016).
Britain is not just falling behind—we are paying billions to lose the clean energy race.
Three critical failures of National Marginal Pricing
1. The Scottish wind scandal: Paying twice for government failure
Here's an outrage that should spark parliamentary investigations: Scotland generates over 130% of its electricity needs from renewables, yet Scottish families pay identical rates to gas-dependent Londoners. When Scotland's wind farms produce "too much" clean power, we pay them to stop generating while simultaneously importing expensive electricity from France (Ofgem, 2023).
The numbers are damning: We compensate Scottish wind farms £50/MWh to switch off, then purchase French nuclear electricity at £150/MWh—a £100/MWh penalty for market design incompetence (Carbon Tracker, 2023).
This isn't just inefficient—it's economically insane. British taxpayers fund this absurdity twice: once through curtailment payments, again through inflated import costs.
2. The investment desert: How bad pricing kills good projects
Even with generous Contracts for Difference sweetening the deal, flagship developments like Hornsea 4 offshore wind are being abandoned. Why? Because uniform pricing provides zero intelligence about where investment creates most value.
Developers face an impossible lottery:
• Unpredictable grid access costs that can destroy project economics overnight
• No reward for efficient siting near demand centres or uncongested transmission
• Perverse competition from fossil fuel "peaker" plants that rarely operate but still collect payments
The result: Britain has tumbled to 9th place globally for renewable investment attractiveness (EY RECAI Index, 2024). Countries with inferior wind resources are stealing our clean energy investments because they offer superior market signals.
3. The smart meter paradox: £11 billion for digital ornaments
Perhaps nothing illustrates our market dysfunction more perfectly than this: Britain spent £11 billion installing smart meters in 30 million homes, yet fewer than 10% of households benefit from time-varying tariffs (Ofgem, 2021). Without locational or dynamic price signals, these expensive devices function as glorified digital displays.
The opportunity squandered is breathtaking: If merely 30% of households responded to dynamic pricing, peak demand would drop 8 GW—eliminating the need for eight new gas plants (MIT Energy Initiative, 2016). Instead, these meters collect dust while we build fossil fuel backup we don't need.
The American success story: Proof LMP transforms markets
America didn't theorise about electricity market reform—they revolutionised it. Today, two-thirds of US electricity operates under Locational Marginal Pricing, delivering transformational results that make Britain's performance look amateurish.
PJM interconnection: 13 States, 65 Million people
• 25% reduction in congestion costs since LMP implementation
• £3.2 billion annual savings through optimised dispatch
• Seamless renewable integration maintaining grid reliability (Monitoring Analytics, 2024)
California ISO: The clean energy powerhouse
• 11.2 GW of battery storage—more than Britain's entire battery fleet
• 97 consecutive days at 100% renewable electricity supply in 2023
• 30% reduction in curtailment through intelligent locational dispatch (CAISO, 2024)
Texas ERCOT: The wind capital of the world
• Global leadership in wind generation capacity
• 70% cost reduction in renewable energy since LMP adoption
• £150 billion in clean energy investment attracted through transparent price signals (ERCOT Annual Report, 2024)
The evidence is overwhelming: Every major electricity market using locational pricing outperforms uniform pricing systems in renewable integration, cost efficiency, and investment attraction.
Britain's moment: The REMA opportunity we cannot waste
The Review of Electricity Market Arrangements represents Britain's first genuine opportunity in three decades to escape this fossil fuel pricing prison. We possess every tool needed for transformation:
• Over 60% smart meter penetration—higher than most US states when they adopted LMP (DESNZ, 2023)
• World-class grid modelling capabilities through the Electricity System Operator (National Grid ESO, 2023)
• Legal net zero mandate requiring complete system transformation (Climate Change Act, 2008)
What's conspicuously absent? Political courage to confront legacy fossil fuel interests who profit from market dysfunction.
Dismantling the opposition: Three myths debunked
Myth 1: "LMP is too complex for Britain"
Reality: Britain already calculates transmission congestion charges, curtailment costs, and complex uplift payments. LMP simply makes these transparent to all participants instead of burying them in opaque charges (BEIS Flexibility Plan, 2021). If we can manage the current Byzantine system, LMP is elementary.
Myth 2: "Consumers will pay more under LMP"
Reality: LMP reduces total system costs, delivering net consumer benefits even after transition support. California households save approximately £200 annually through more efficient markets (CAISO, 2024). British families could see £150 yearly savings with appropriate protections (MIT, 2016).
Myth 3: "LMP will hurt renewable development"
Reality: LMP rewards renewables by exposing the true cost of fossil fuel backup and grid inefficiency. In Texas, locational pricing accelerated renewable deployment by revealing where clean energy creates maximum value (ERCOT, 2024).
A blueprint for British clean energy leadership
Phase 1: Foundation Building (2025–2026)
• Expand dynamic tariffs to 5 million households with automatic bill protection
• Launch comprehensive Energy Vulnerability Fund ensuring no household faces transition hardship
• Mandate locational pricing signals in all new Contracts for Difference
Phase 2: Market Transformation (2026–2028)
• Introduce LMP in wholesale electricity markets with robust consumer safeguards
• Reform market settlement systems to reflect both location and time-based pricing
• Require dynamic pricing as standard for all new electricity connections
Phase 3: Full Integration (2028–2030)
• Implement LMP across all voltage levels for complete market coherence
• Establish regional procurement mechanisms supporting local generation and storage
• Optimise cross-border electricity trading through transparent locational signals
The staggering cost of continued failure
Every year Britain delays LMP adoption costs us:
• £2.4 billion in senseless renewable energy curtailment (Carbon Brief, 2023)
• £800 million in preventable transmission losses (MIT, 2016)
• £1.2 billion in suboptimal investment decisions (National Grid ESO, 2023)
• Incalculable reputational damage as global clean energy leadership slips away
Total annual cost of maintaining the broken status quo: Over £4 billion
For the average British household, this represents £150 in hidden annual costs—money extracted from family budgets to subsidise market dysfunction.
Conclusion: Leading or following?
Britain stands at a crossroads that will define our energy future for generations. We can continue propping up a fossil fuel pricing relic, watching other nations capture the clean energy investments and innovations that should be ours. Or we can embrace pricing reform that rewards efficiency, guides intelligent investment, and accelerates our net zero transition.
The international evidence is overwhelming. The economic case is bulletproof. The technology exists today.
This is no longer a question of whether Britain will adopt Locational Marginal Pricing—every advanced economy recognises its superiority. The only question is whether we will lead this transformation or follow reluctantly behind nations that seized the opportunity while we dithered.
The world is transitioning with or without us. The choice—and the consequences—are entirely ours.
illuminem Voices is a democratic space presenting the thoughts and opinions of leading Sustainability & Energy writers, their opinions do not necessarily represent those of illuminem.
