Cheapest electricity provider UK 2025 (compare whole-of-market)

Compare the cheapest electricity provider in the UK for 2025

There isn’t one single supplier that’s cheapest for everyone. Your price depends on your postcode (region), meter type, usage, and whether you choose a fixed or variable tariff. EnergyPlus.co.uk helps UK households compare whole-of-market electricity deals so you can find the best-value option for your home in 2025.

What you’ll see after you submit

• Estimated annual cost based on your details
• Unit rate (p/kWh) and standing charge (p/day)
• Tariff type (fixed/variable) and contract length
• Exit fees (if any), payment method and key features

Your region & network costs

Electricity distribution charges vary across Great Britain. That’s why your postcode matters when calculating the cheapest supplier for your home.

Standing charge vs unit rate

A low unit rate can look great—but a higher standing charge may cost more overall for low-usage households. We compare total estimated annual cost.

Tariff structure & features

Fixed vs variable, exit fees, Economy 7 rates, and green options can change what’s “best value” depending on how you use electricity day-to-day.

How to find the cheapest electricity deal (step-by-step)

1. Check your current tariff: look at your latest bill for unit rate (p/kWh), standing charge (p/day), and whether you’re fixed or variable.
2. Use your annual usage if possible: it’s the most accurate way to compare. If you only know monthly spend, that works too.
3. Compare like-for-like: same payment method (direct debit/receipt of bill), same meter type (standard, smart, Economy 7, prepay).
4. Review total annual cost: don’t pick based on unit rate alone—standing charge can swing the outcome.
5. Check key terms: contract length, exit fees, price guarantees, and any discounts that expire.
6. Switch: once you choose, the new supplier typically handles the process. Keep paying as normal until the switch completes.

What we compare

All costs are shown as estimates based on the information you provide. Always check the tariff details before switching.

Fixed tariffs

Your unit rate and standing charge are fixed for a set term (often 12–24 months). Good for budgeting. Check exit fees if you may switch again soon.

Variable tariffs

Prices can change. These may be suitable if you want flexibility, but they can become expensive if rates rise. Compare total cost and stability.

Economy 7 / multi-rate

Cheaper off-peak electricity with a higher day rate. Can be cheapest if you use a large share of power at night (e.g. storage heaters or EV charging).

How to cut your electricity bill in 2025 (beyond switching)

Switching supplier is usually the fastest way to find a cheaper electricity rate—but your usage matters too. These actions can help reduce your annual cost, whichever provider you choose.

• Check your payment method: direct debit tariffs can be cheaper than paying on receipt of bill.
• Use smart meter insights: identify the appliances driving peaks and reduce standby waste.
• Time-shift high usage: if you’re on a multi-rate tariff, run washing/dishwashing off-peak where possible.
• Review electric heating: optimise settings; consider zonal heating and improved insulation.
• Audit “always on” devices: routers, AV units, and older fridges can cost more than expected.

Common mistakes that stop people finding the cheapest

If you want, use the comparison form above first, then come back to these tips to maximise savings.

Most UK households can switch

If you pay the electricity bill for your home (tenant or homeowner), you can usually switch supplier. If you’re in a fixed term, you may have an exit fee—so it’s worth comparing the saving against any fees.

Special cases

• Prepayment meters: you can still compare and switch—tariffs differ from credit meters.
• Economy 7: switching is possible, but make sure the new tariff supports multi-rate if you need it.
• Landlord supplies included: if electricity is included in rent, you typically can’t switch the supplier.

Who is the cheapest electricity supplier in the UK right now?

It varies by postcode, meter type, and how much electricity you use. The best way to identify the cheapest option is to compare tariffs using your actual usage and see the lowest estimated annual cost.

Is a fixed tariff always cheaper than a variable tariff in 2025?

Not always. Fixed tariffs can offer price certainty and may be cheaper depending on market conditions, but a variable tariff can be lower at times. Compare both using the same usage to judge total cost.

What details do I need to compare electricity prices?

A postcode and meter type are the basics. For the most accurate results, add your annual kWh usage (often shown on your bill). If you don’t have it, you can still compare using an estimate.

Will my electricity supply be interrupted if I switch?

No—your electricity keeps flowing. The switch is administrative. Your new supplier takes over billing, and you’ll provide a meter reading around the switch date.

Can I switch if I have a prepayment meter?

Yes. Prepayment tariffs and availability can differ from credit meters, so it’s important to compare using the correct meter type to find the cheapest options for your situation.

What’s the difference between unit rate and standing charge?

The unit rate is what you pay for each kWh of electricity you use. The standing charge is a daily fixed amount. The cheapest deal depends on the combination of both for your usage level.