PARTLY

As of 13 August 2026, AI can only partly compare UK energy tariffs.

This still needs a person who signs their name to it.

Can you do it?

15 minutesto a draft.

30 minutesto something you’d act on.

Cost, all in£0

Skill neededchat-fluent

Who has to check ityou

What the alternative costsNo alternative price is supplied in the available tool data.

If this goes wrong, you may choose a tariff that costs more than expected because a rate, usage assumption or contract term was wrong.

What to actually do

  1. Hand it to a person

    The route this page recommends

    A person who owns the outcome does this end to end, worth it when the failure is dear.

  2. Use a tool built for this

    Second choice

  3. Do it yourself

    The distant third

    A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

    How to actually do it

    1. Open your latest electricity and gas bills and record the annual usage in kWh, your current unit rates, standing charges, payment method, tariff end date and any exit fee.
    2. Open the current supplier pages or quotes for the tariffs you want to compare and copy the rates, standing charges, tariff type, contract length, payment method, discounts, eligibility rules and exit fees into a document.
    3. Remove account numbers, full addresses, payment details and any other private information before pasting the bill and tariff details into a chatbot.
    4. Paste the supplied prompt with your usage and the copied tariff information, then ask the chatbot to calculate each fuel separately and show every calculation.
    5. Copy the resulting table into a spreadsheet and check each multiplication and addition against the rates and kWh on your bills and the supplier pages.
    6. Open each supplier's current tariff page and confirm the regional rates, meter requirements, payment conditions, contract terms, exit fees and any discount before treating the comparison as current.
    7. Choose a tariff only after confirming the final price and terms with the supplier, then keep the source pages and the checked comparison for your records.

    Prompt

    Compare the UK energy tariffs in the information below. Do not invent or estimate any missing figures. Separate electricity and gas, and show for each tariff the unit rate, standing charge, tariff type, payment method, contract length, exit fees, discounts, renewable claims and any eligibility conditions. Use my actual annual usage of [electricity kWh] electricity and [gas kWh] gas, if supplied. Calculate the estimated annual cost for each fuel and the combined annual cost, showing the calculation so I can check it. If a tariff has different rates by region, meter type, payment method or time of use, say that the comparison is conditional rather than presenting one figure as universal. Identify which figures are missing, stale or need confirmation from the supplier. Do not recommend switching solely on price. End with a short checklist of what I must confirm on the supplier's current website before switching. Here is my current tariff and usage: [paste details]. Here are the candidate tariffs: [paste current supplier tariff pages, quotes or tariff details].

    Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.

What it gets wrong

What caps this at PARTLY: real time truth, verification cost and judgement under ambiguity.

How we scored this

Five axes, each scored nought to two by hand: ten means AI carries the task cleanly, and the thresholds that turn a total into YES, PARTLY or NO are published in the methodology. Each axis name links to its definition.

AxisScore (0–2)
Output2
Inputs1
Verification1
Liability1
Effort delta2
Total7 / 10

The methodology and its thresholds are published in full.

FAQ

Can ChatGPT find me the cheapest energy tariff?
It can compare tariff information you provide and calculate estimated costs, but it cannot reliably guarantee the cheapest current UK tariff without current supplier data and your full usage details. Check the rates, standing charges, eligibility and contract terms on the supplier's current website before switching.
Can AI compare my electricity and gas bills?
Yes, it can extract usage and charges from bills and put them beside other tariff details. Remove account and payment information first, and check the extracted figures against the original bills because a model can misread tables or separate electricity and gas charges.
Is it safe to use AI to choose an energy tariff?
It is useful for organising figures, but it is not safe to accept an unchecked recommendation because prices, eligibility and contract terms change. This is not professional advice; for a serious financial decision involving hardship or complex household circumstances, speak to a regulated financial adviser or an appropriate debt adviser.
Can AI tell me whether I should switch energy suppliers?
It can compare the stated costs and terms, but the decision also depends on your meter, payment method, usage pattern, contract conditions and tolerance for price changes. Confirm the current offer and any exit fee with the supplier before switching.

Nearby answers

All Insurance & utilities rulings

Assessed by gpt-5.6-luna (gpt-5.6-luna) on 2026-08-13, second-checked by an independent model. Wrong somewhere? Email [email protected] and it gets re-checked.

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