Cheaper Energy Prices
Wales is being failed by an energy system that still bends over backwards for fossil fuels while households are pushed to the brink. At a time when wind and solar are delivering the cheapest power Britain has ever produced, families here are still forced to pay prices pegged to gas — the most volatile, crisis‑driven fuel on the market. This isn’t just outdated; it’s a political choice that keeps Wales locked into a system designed to protect fossil‑fuel profits instead of people. With bills rising again in 2026 and communities already stretched to breaking point, the case for reform is no longer a debate — it’s an emergency. Wales generates clean power in abundance, yet pays more because the rules are rigged. The Welsh Liberal Democrats demand immediate action to break the grip of gas, unleash the true value of renewables, and deliver a fair, modern energy system worthy of the people it serves.
Power to the People: Wales Deserves a Fair Energy Deal
From January 2026, families in Wales will pay more for electricity than the UK average, burdened by higher unit rates and standing charges. Across Wales, households are still facing punishing bills — even though renewable energy is now cheaper than ever.
Today, the average household pays 25–26 pence per kilowatt hour under Ofgem’s price cap, with annual bills between £1,720 and £1,755. These costs are unsustainable.
The facts are undeniable:
• Large‑scale solar costs around £41 per megawatt hour (MWh).
• Onshore and offshore wind on average £44/MWh.
• Gas generation, by contrast, costs a staggering £114/MWh, on average
Yet Britain’s outdated “marginal pricing” system ties every household to volatile gas prices. The wholesale electricity price is set by the most expensive generator needed to meet demand — almost always gas. Even when renewables supply nearly half of our electricity, bills are dictated by fossil fuels.
Global shocks have made this worse. Russia’s invasion of Ukraine in 2022 sent gas prices soaring, tripling costs and driving UK electricity prices to record highs.
Enough is enough. Wales cannot afford to remain shackled to gas. Political leaders are finally waking up — with proposals to decouple renewables from gas pricing, halve household bills, and accelerate investment in clean power and home insulation.
But change won’t happen without pressure.
We call on government, regulators, and industry to act now:
• Break the link between gas and electricity prices.
• Let renewables set the price of power.
• Invest in clean energy and insulation to protect households.
• Deliver affordable, secure energy for every family in Britain.
This is a turning point. Wales has the power, the technology, and the will to build a fairer energy future. It’s time to break free from gas. It’s time to put people before profits. It’s time to give Wales the fair deal it deserves.
Pŵer i’r Bobl: Mae Cymru’n Haeddu Bargen Egni Deg
O Ionawr 2026 ymlaen, bydd teuluoedd yng Nghymru yn talu mwy am drydan na chyfartaledd y DU, gan wynebu cyfraddau uned uwch a thaliadau sefydlog uwch. Ar draws Cymru, mae aelwydydd yn dal i wynebu biliau cosbol — er bod ynni adnewyddadwy bellach yn rhatach nag erioed.
Heddiw, mae’r aelwyd gyfartalog yn talu 25–26 ceiniog y cilowat-awr o dan gap pris Ofgem, gyda biliau blynyddol rhwng £1,720 a £1,755. Mae’r costau hyn yn anghynaladwy.
Mae’r ffeithiau’n ddiymwad:
• Mae solar ar raddfa fawr yn costio tua £41 y megawat-awr (MWh).
• Gwynt ar y tir ac ar y môr yn costio tua £44/MWh ar gyfartaledd.
• Cynhyrchu nwy, o’i gymharu, yn costio £114/MWh ar gyfartaledd — ffigwr syfrdanol.
Serch hynny, mae system “prisio ymylol” hen ffasiwn Prydain yn clymu pob aelwyd wrth brisiau nwy anwadal. Caiff pris trydan cyfanwerthol ei osod gan y cynhyrchydd drutaf sydd ei angen i fodloni’r galw — bron bob amser yn nwy. Hyd yn oed pan fo adnewyddadwy yn cyflenwi bron hanner ein trydan, mae biliau’n cael eu llywodraethu gan danwydd ffosil.
Mae siociau byd-eang wedi gwaethygu hyn. Anrheithiad Rwsia ar Wcráin yn 2022 wnaeth beri i brisiau nwy saethu i fyny, gan dryblu costau a gwthio prisiau trydan y DU i uchafbwyntiau hanesyddol.
Digon yw digon. Ni all Cymru fforddio aros yn gaeth i nwy. Mae arweinwyr gwleidyddol o’r diwedd yn deffro — gyda chynigion i ddatgysylltu adnewyddadwy oddi wrth brisio nwy, haneru biliau cartref, a chyflymu buddsoddiad mewn pŵer glân ac inswleiddio cartrefi.
Ond ni ddaw newid heb bwysau.
Rydym yn galw ar y llywodraeth, rheoleiddwyr a’r diwydiant i weithredu nawr:
• Torri’r cysylltiad rhwng prisiau nwy a thrydan.
• Caniatáu i adnewyddadwy osod pris trydan.
• Buddsoddi mewn ynni glân ac inswleiddio i ddiogelu aelwydydd.
• Darparu ynni fforddiadwy a diogel i bob teulu ym Mhrydain.
Dyma foment dyngedfennol. Mae gan Gymru y pŵer, y dechnoleg a’r ewyllys i adeiladu dyfodol ynni tegach. Mae’n bryd rhyddhau’n hunain o nwy. Mae’n bryd rhoi pobl o flaen elw. Mae’n bryd rhoi’r fargen deg y mae Cymru’n ei haeddu.
Britain cannot keep paying 21st‑century prices for a 20th‑century energy system. When clean power is now the cheapest electricity in our history, it is indefensible that families are still chained to the cost of gas. We have the technology, the resources, and the responsibility to build a fairer system — one where households finally benefit from the renewable energy they already pay to support. Every gust of wind and every ray of sunlight should be lowering bills — not lining the pockets of gas companies. The British public has done its part by backing clean energy. Now the system must do its part by ensuring that cheap renewable power actually reaches people’s bills. Fairness isn’t radical. It’s common sense. For too long, Britain’s energy market has rewarded the most expensive fuel and punished the people who can least afford it. When renewables are producing nearly half our electricity, it is absurd that gas still dictates the price. Breaking that link isn’t just an economic necessity — it’s a moral one.
Justin Griffiths, lead candidate Sir Gaefyrddin