Will My Energy Bill Change in May 2026?

What's not changing in May

The headline price cap level for the Q2 2026 quarter (1 April – 30 June) is fixed at £1,641 for typical dual-fuel direct-debit usage. That means:

• If you're on SVT, your unit rates and standing charges are the same in May as in April.
• If you're on a fixed tariff, your rates are locked for the duration of your fix regardless of cap movements.
• Regional cap variation also doesn't change mid-quarter.

What can still change your specific bill

Three things move bills in May despite cap stability:

1. Usage. Heating drops dramatically as outdoor temperatures rise. Most households see gas bills 30–50% lower in May than in March, even with same rates.
2. Direct debit rebalancing. Many suppliers re-evaluate direct debit amounts in spring, after winter actuals are in. Yours may rise or fall.
3. Tariff transitions. If you have a fix ending in May, you'll move to SVT (or a new fix) with potentially different rates.

Direct debit changes specifically

Most suppliers review your direct debit twice a year — typically March/April and September/October. If you've just had a review, your May direct debit may differ from last month's even though rates haven't changed. Common reasons:

• Lower-than-forecast winter usage → DD reduced.
• Higher-than-forecast winter usage → DD increased.
• Credit balance accumulated → DD reduced (or refund offered).
• Debit balance accumulated → DD increased.

You can request a different DD level by giving your supplier a target balance and your annual usage estimate. Under tightened Ofgem rules introduced in 2024, suppliers must justify DD levels and are restricted in how much credit they can hold.

Why bills usually drop in May regardless

For a typical UK household, monthly energy bills follow a strong seasonal pattern:

• January–February: peak. Heating, lighting, indoor activity. Often £180–£250/month.
• March–April: tapering. Heating still on but fewer hours. £130–£180/month.
• May: low. Heating largely off, longer days. £90–£130/month.
• June–August: trough. £70–£100/month, mostly cooking, hot water, electrical loads.
• September: rising again. £100–£140/month.

So a lower May bill compared to April is normal — and entirely usage-driven, not rate-driven.

What to watch for on 27 May

Ofgem confirms the Q3 2026 cap on 27 May, taking effect 1 July. Possible outcomes:

• Cap rises: SVT customers see higher rates from 1 July. Fixed-tariff customers unaffected.
• Cap falls: SVT customers see lower rates from 1 July. Fixed-tariff customers locked at current fix rates.
• Cap broadly flat: minimal change for SVT. Most likely outcome based on current forecasts.

If you're considering switching, the announcement gives clearer signals on whether to take a 12m or 24m fix.

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Information is for general guidance based on Ofgem published cap data and supplier pricing as of early May 2026. Specific rates depend on your postcode, meter type and tariff terms. Always check the latest tariff details before switching. EnergyPlus is an independent comparison service.