The KT Score rates UK energy suppliers using only regulator and ombudsman data: Energy Ombudsman complaints, Citizens Advice ratings and Ofgem enforcement. This page sets out the formula, the 45:40:15 weights and the renormalisation rule.
TL;DR · Last reviewed 12 June 2026
The KT Score rates UK energy suppliers out of 100 using only three published datasets: Energy Ombudsman accepted complaints per 100,000 accounts (weight 45 percent), the Citizens Advice customer service star rating (40 percent) and the Ofgem enforcement record over a trailing 24 months (15 percent). Missing metrics are never imputed: their weight is dropped and the rest rescaled. The engine is deterministic, so identical inputs always return identical scores.
KT Score methodology. Data to Q4 2025. Last reviewed 12 June 2026.
The Kael Tripton Score (the KT Score) is a single number out of 100 for each UK domestic energy supplier. It is built only from published regulator and ombudsman data. It contains no opinion, no star ratings invented here, no user reviews, no commission, and no pay-to-rank arrangement. The phrase that sits behind it is plain: scored by data, not commission. This page sets out exactly how the number is produced, so any reader can reproduce it from the same public sources.
The KT Score uses three primary sources and nothing else. Each is a regulator or statutory ombudsman publication.
No secondary coverage is used. Press articles, price-comparison sites, and commercial review platforms are excluded by design. Only the three sources above and gov.uk material sit behind any figure.
The KT Score is a weighted average of three normalised metrics, each scaled to a 0 to 100 range before weighting:
KT Score = round( 0.45 × A + 0.40 × B + 0.15 × C )
The result is rounded to the nearest whole number and shown out of 100 with a vintage line, for example: KT Score 76 out of 100, data to Q4 2025.
Complaints per 100,000 accounts is a count where a lower figure is better. For each scored supplier the percentile rank is calculated as the share of scored suppliers with a higher (worse) complaints figure, plus half the share that share the same figure, expressed out of 100. This places the supplier with the fewest complaints near the upper end of the 0 to 100 band and the supplier with the most near the lower end, with the spacing set by rank rather than by raw gap. The population for this calculation is the set of scored suppliers that disclose the metric in the current quarter.
The Citizens Advice rating is already a like-for-like score out of 5 across suppliers. It is mapped linearly onto 0 to 100 by multiplying by 20. A rating of 3.78 out of 5 becomes 75.6; a rating of 2.28 out of 5 becomes 45.6. No other adjustment is applied.
Metric C begins at 100 for every supplier and is reduced only where a primary Ofgem source documents action inside the trailing 24-month window:
Routine compliance-monitoring mentions, such as scheme-delivery notes in a Supplier Performance Report, are not treated as formal enforcement and do not reduce Metric C. Actions older than the 24-month window do not reduce Metric C; they are recorded in the supplier notes for transparency but carry no score effect. A supplier with no qualifying action keeps the full 100.
The three weights reflect how directly each dataset measures realised consumer harm. Metric A carries 45 percent because accepted complaints per 100,000 accounts is the most direct published signal of problems that customers could not resolve with the supplier and escalated to an independent ombudsman. Metric B carries 40 percent because the Citizens Advice rating is a structured, like-for-like assessment of customer service quality across suppliers, measuring areas such as ease of contact, billing accuracy, and complaint handling. Metric C carries 15 percent because formal enforcement is a strong but infrequent and binary signal: most suppliers in most quarters carry no qualifying action, so a smaller weight prevents a single historic event from dominating an otherwise current picture. The weights are fixed across suppliers and across quarters; they do not vary by supplier, and any change to them is logged in the change log below.
Take a supplier with a Citizens Advice rating of 3.78 out of 5, the lowest complaints figure among the scored group, and one qualifying enforcement action inside the window. Metric B is 3.78 multiplied by 20, which is 75.6. Metric A, as the lowest complaints figure, sits near the upper end of the percentile band; with five suppliers and no ties it resolves to 90. Metric C is 100 minus 40, which is 60. The weighted average is 0.45 multiplied by 90, plus 0.40 multiplied by 75.6, plus 0.15 multiplied by 60, which is 40.5 plus 30.24 plus 9, totalling 79.74, rounded to 80. The same three lines of arithmetic produce every figure in the league table, which is why the engine is described as deterministic: identical inputs return an identical score on every run.
If a supplier is missing from a dataset, because it is too small or too new to appear, that metric is recorded as n/d (not disclosed) and is never imputed or guessed. When a metric is n/d, its weight is removed and the remaining weights are rescaled so they still sum to 1 before the weighted average is taken. A supplier scored on two of the three metrics is therefore scored fairly against those two, rather than penalised for a gap in public data. The current quarter has all three metrics present for every scored supplier, so no renormalisation is active, but the engine applies the rule automatically when a gap appears.
The KT Score is a compression of public regulatory data into one comparable figure. It is not a recommendation to switch to or away from any supplier. It is not a prediction of the service any individual household will receive, since complaint rates and star ratings are aggregates. It is not a price ranking; tariff costs change every cap period and are covered separately. It is not financial advice and it is not a substitute for checking current tariffs, exit terms, and eligibility before any switch. It carries no commercial weighting: no supplier can pay to raise its figure, and no affiliate or commission relationship feeds into it.
The score engine is deterministic. Running it against the same recorded raw values returns the same figures every time. Each published figure traces to a recorded source URL and publication vintage, held alongside the data in the scoring file. When a new quarter is published, only the raw input block changes; the formula and weights stay fixed unless a methodology change is logged here.
Disclaimer
This page and the KT Score are informational only and do not constitute financial, legal, or consumer advice. Figures reflect the published data vintages stated and may change when regulators publish new quarters. Always check a supplier's current tariff and terms before making any decision.
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An MPRN, or Meter Point Reference Number, is the unique reference that identifies a gas supply point at a property in Great Britain. It is tied to the property rather than the meter and is used when switching supplier or resolving a gas supply query.
An MPAN, or Meter Point Administration Number, is the unique reference that identifies an electricity supply point at a property in Great Britain. It stays with the property rather than the meter and is used when switching supplier or querying a supply.
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Why Payback Period Is the Right Starting Point Business energy efficiency decisions are capital allocation decisions.
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Why Businesses Skip the Audit and Pay for It Later Most UK businesses that overpay on energy bills do so not because their contracts are bad but...
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What Drives Business Gas Bills in the UK Business gas bills are shaped by three variables: the volume of gas consumed (measured in kWh), the...
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What Deemed Rates Are and Their Legal Basis A deemed contract is a supply arrangement that arises by operation of law.
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What Out-of-Contract Rates Are When a fixed-term business energy contract ends and no new contract has been agreed, the supplier moves the...
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Why Broker Selection Matters Not all business energy brokers operate to the same standard.
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How Business Energy Broker Commission Works When a business energy broker arranges a supply contract on your behalf, the broker is paid by the...
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What a Business Energy Broker Actually Does A business energy broker, also called a third-party intermediary (TPI), acts as a procurement agent...
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Setting up energy for a new business premises involves two entirely separate processes that many business owners conflate: getting the physical...
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Most business energy customers have considerably fewer legal protections than domestic consumers.
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Streamlined Energy and Carbon Reporting is the mandatory framework that embeds energy and emissions disclosure into the statutory accounts of...
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The Energy Savings Opportunity Scheme places a legal obligation on large UK enterprises to audit their energy use and identify cost-effective...
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A supplier advertising a "100% renewable" business energy tariff is not automatically misleading - but it is not automatically meaningful...
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By 2026, almost every UK business energy supplier offers a tariff labelled green, renewable, or 100 percent renewable electricity.
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The phrase "average business electricity bill" hides enormous variation. A solo consultant working from a 40-square-metre commercial unit pays a...
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VAT on UK business energy is one of the most quietly expensive lines on a small-business bill, and one of the most commonly overpaid.
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The standing charge is the line on your business energy bill that earns the least attention and quietly does the most damage.
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Between 2021 and 2023, more than 30 UK energy suppliers exited the market. Most were small challengers caught between fixed retail prices and a...
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OPEC+ confirmed higher production from May 2026, sending Brent crude lower. Here is how the change feeds through to UK petrol prices, the Ofgem price cap, and household energy bills.
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Energy price cap Q2 2026 set at £1,641, down £117 from Q1. Ofgem unit rates, standing charges and what it means for typical household bills.
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Ofgem will confirm the July 2026 price cap on 27 May. Cornwall Insight forecasts £1,929 per dual-fuel household — an 18% rise on April, driven by Iran conflict wholesale spikes.
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From 1 April 2026 UK households see an average £150 cut to energy bills as the ECO scheme ends and 75% of the Renewables Obligation shifts to general taxation. Full breakdown of how it works, who actually saves and what else the Budget did for energy.
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Cornwall Insight forecasts UK households face a £331 annual increase from July 2026 as the Iran conflict drives wholesale gas to 2023 highs. Ofgem confirms the cap on 27 May. Full picture for consumers and energy brokers.
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The Ofgem energy price cap dropped 6.6% on 1 April 2026 — saving the average household around £117 a year. Here is the unit rate breakdown and what to do if you are on a variable tariff.
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This UK government tender from MUTUAL ENERGY LIMITED has been published on Find a Tender Service. The contract covers pipeline repair and
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This UK government tender from Comhairle nan Eilean Siar has been published on Find a Tender Service. The contract covers management services
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This UK government tender from Leeds City Council has been published on Find a Tender Service. The contract covers building energy management
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This UK government tender from Department for Science, Innovation & Technology has been published on Find a Tender Service. The contract covers
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This UK government tender from UK Atomic Energy Authority has been published on Find a Tender Service. The contract covers laser ablation
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This UK government tender from Ministry of Defence has been published on Find a Tender Service. The contract covers battery energy storage
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This UK government tender from Post Office Limited has been published on Find a Tender Service. The contract covers direct award to
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This UK government tender from Department for Energy Security & Net Zero has been published on Find a Tender Service. The contract
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This UK government tender from Lichfield District Council has been published on Find a Tender Service. The contract covers warmer homes energy
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This UK government tender from Department for Energy Security & Net Zero has been published on Find a Tender Service. The contract
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A business energy broker negotiates commercial energy contracts on your behalf. Here is how they work and when to use one.
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This UK government tender from East Suffolk Council has been published on Find a Tender Service. The contract covers east suffolk community
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This UK government tender from Redcar and Cleveland Borough Council has been published on Find a Tender Service. The contract covers official
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This UK government tender from Council of the Isles of Scilly has been published on Find a Tender Service. The contract covers
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This UK government tender from Nuneaton and Bedworth Borough Council has been published on Find a Tender Service. The contract covers nun
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This UK government tender from UK Research & Innovation (UKRI) has been published on Find a Tender Service. The contract covers ukri-
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This UK government tender from YPO has been published on Find a Tender Service. The contract covers ypo - 001087 low energy lighting
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This UK government tender from Sellafield Limited has been published on Find a Tender Service. The contract covers supply of refurbished oem
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Part of: Best Energy Suppliers UK 2026 Updated April 2026 | Kaeltripton.com Ofgem announces the energy price cap quarterly. The July 2026
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Part of: Best Energy Suppliers UK 2026 By Chandraketu Tripathi | Updated 20 May 2026 The average household energy bill in the UK
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Part of: Best Energy Suppliers UK 2026 By Chandraketu Tripathi | Updated April 2026The average UK energy bill for a typical dual-fuel
This UK government tender from Ofgem has been published on Find a Tender Service. The contract covers 2024-133 riio-3 independent
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The Ofgem Q2 2026 energy price cap fell to £1,641 a year for a typical dual-fuel direct debit household, with the Q3 cap announced on 27 May. Free changes, low-cost upgrades and government schemes that can cut a typical UK bill by £200-£600 a year, plus how to pick between fixed and tracker tariffs.
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Part of: Best Business Energy UK 2026 Best Business Gas Rates UK Identifying the best business gas rates in the UK requires
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026Comparing business gas prices is one of the highest-impact
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026Business gas is one of the most negotiable overhead costs
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026Business electricity is one of the most significant overhead costs
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By Chandraketu Tripathi | Updated April 2026With dozens of energy companies competing for UK customers in 2026, choosing the best one involves weighing
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By Chandraketu Tripathi | Updated April 2026The UK energy market has undergone dramatic change since 2021. Over 20 suppliers have collapsed, Octopus Energy
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By Chandraketu Tripathi | Updated April 2026The UK energy market in 2026 has stabilised significantly from the crisis years of 2022–2023. The
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026Business energy comparison in 2026 is more important than ever
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Compare UK business energy suppliers on unit rates, standing charges, contract terms and complaints data. Covers electricity, gas and dual fuel contracts.
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026Small businesses in the UK spend an average of £2,
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026A business energy broker can be a powerful ally in
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026Getting a business energy quote used to mean lengthy phone
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026Choosing the wrong business energy tariff can cost your business
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Part of: Best Business Energy UK 2026 By Chandraketu Tripathi | Updated April 2026Business energy is one of the largest and most controllable
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Part of: Best Energy Suppliers UK 2026 The Ofgem energy price cap fell to £1,641 a year for a typical dual-
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Part of: Best Energy Suppliers UK 2026 Solar panel prices have fallen 60% in the last decade. A 4kW system on a
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Part of: Best Energy Suppliers UK 2026 The Boiler Upgrade Scheme grant of £7,500 dramatically changes the heat pump economics in
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Price cap update: £150 Warm Home Discount alongside July's cap rise Ofgem confirmed on 27 May 2026 that the price
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Part of: Best Energy Suppliers UK 2026 The cheapest energy tariff for your household isn't one size fits all — it
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Part of: Best Energy Suppliers UK 2026 Electric vehicle owners can save hundreds of pounds per year with the right energy tariff.
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Part of: Best Energy Suppliers UK 2026 '100% renewable electricity' claims are everywhere in energy tariff marketing — but what do
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Part of: Best Energy Suppliers UK 2026 Many people search for 'energy social tariff' — but this scheme no longer exists
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Part of: Best Energy Suppliers UK 2026 E.ON Next is the digital-first rebrand of E.ON UK — and in 2026
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Part of: Best Energy Suppliers UK 2026 Ovo Energy became one of the UK's largest suppliers almost overnight — but size
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Part of: Best Energy Suppliers UK 2026 EDF Energy is the UK's largest zero-carbon electricity generator — but does that
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Price cap update: what the July 2026 rise means for British Gas customers Ofgem confirmed on 27 May 2026 that the energy
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Part of: Best Energy Suppliers UK 2026 Ofgem confirmed on 25 February 2026 that the energy price cap falls to £1,641/
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This UK government tender from Citizen Housing Group Ltd has been published on Find a Tender Service. The contract covers energy supply
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Part of: Best Energy Suppliers UK 2026 By Chandraketu Tripathi · Updated 6 April 2026 · Fact-checked Energy · April 2026 The UK energy
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The Ofgem cap fell to £1,641 on 1 April 2026. The next quarterly cap, covering July to September 2026, will be announced by Ofgem on 27 May 2026. Here is what to expect and how to prepare.
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Part of: Best Energy Suppliers UK 2026 Home › Cost of Living › Energy Bills UK 2026: Price Cap, Rates & 10 Ways to
Money Guides
This UK government tender from GREAT BRITISH ENERGY - NUCLEAR has been published on Find a Tender Service. The contract covers financial advisory
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The July 2026 Ofgem cap is forecast at £1,861–£1,972, up from £1,641 in April. Cornwall Insight, EDF and E.ON forecasts, unit rates and whether to fix now.
Energy
The Ofgem energy price cap drops £117 to £1,641 from April 1, 2026 — the first significant fall in years. But analysts warn July could bring it back up. Here's exactly what the change means for your bills and what to do.
Energy
This UK government tender from London Borough of Islington has been published on Find a Tender Service. The contract covers energy services
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Octopus Energy is the UK's largest domestic energy supplier by customer accounts. This review covers the tariff range, the Agile and Intelligent Octopus Go products, the Kraken platform, the renewable claim mechanism, the Ofgem complaints record and the ownership and regulatory structure.
Energy
Energy bills are still one of the biggest household costs in the UK. We compare every major supplier for 2026 — cheapest tariffs, green energy, customer service and how to switch and save.
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Are solar panels worth it in the UK? Full breakdown of costs, annual savings, payback period, Smart Export Guarantee payments, battery storage, planning permission and whether the investment makes financial sense for your home.
Uk Bank Accounts
Electric blankets & heated throws offer warmth, comfort, and energy efficiency, making winter nights cozy while reducing heating costs. From pain relief to sleep improvement, discover their benefits, types, safety tips, and how to choose the best one for your needs.
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