Best energy tariffs with free evening electricity (UK guide)

A practical, UK-specific guide to “free evening electricity” tariffs (often EV-style plans): how they work, who they suit, typical eligibility rules, and how to compare the true cost.

  • Learn what “free evenings” really means (and what it doesn’t)
  • Check meter, region and payment method eligibility before you switch
  • Compare unit rates + standing charge across the whole week, not just the free window
Get your energy quote How free evenings work

Estimates only. Tariff availability and eligibility vary by supplier, region, meter type and payment method.

Fast answer: what are “free evening electricity” tariffs in the UK?

In the UK, “free evening electricity” tariffs are typically time-of-use electricity plans (often marketed at EV drivers) where your electricity unit rate is £0.00/kWh for a set evening window on specific days (for example, weekends, or a limited number of evenings per week). Outside that window, the unit rate is usually higher than a standard variable or typical fixed tariff, and the standing charge still applies.

Key point: These tariffs can be excellent if you can reliably shift usage into the free window (EV charging, washing machine, tumble dryer, dishwasher). If your usage stays mostly outside the window, they can cost more overall.

Quick takeaways

  • “Free” usually means unit rate only (standing charge still payable).
  • Most require a smart meter capable of half-hourly reads.
  • Check exact times (e.g., 7–9pm) and which days apply.
  • Compare using your weekly pattern, not annual averages.

Best suited to

  • EV owners who can schedule charging in the free slot
  • Households with high evening/weekend electricity use
  • People comfortable with tariff rules and app-based scheduling

Often not ideal for

  • Homes with higher daytime use (WFH, electric cooking midday)
  • Anyone who can’t shift use (medical equipment, fixed routines)
  • People without a working smart meter / signal

If you want the simplest route: compare your current tariff against a free-evenings option using your actual usage (or best estimate), then sanity-check eligibility and exit fees before switching.

Compare free-evening style tariffs across the market

EnergyPlus compares whole-of-market home energy options, including time-of-use tariffs where available. Tell us a few details and we’ll match you to tariffs that fit your meter type and preferences.

Tip: If you have an EV, note whether you can schedule charging (in-car timer, charger app, or supplier app). That’s often the difference between this tariff type being great or costly.

What you’ll need (takes ~1 minute)

  • Your postcode (region affects standing charge and unit rates)
  • Contact details to send your results
  • If you know it: your meter type (smart / prepay / Economy 7)

Prefer to read first? Jump to the comparison checklist before you share details.

Get your quote

We’ll use your details to provide tariff options and contact you about your results. You can ask us not to call.

Start your comparison

By submitting, you confirm this is for a UK home energy comparison. We’ll use your details to provide quotes and contact you about your comparison. You can opt out at any time.

How “free evening electricity” tariffs actually work

They’re time-of-use tariffs

Your electricity price changes depending on the time and day. A “free evening” is a special time band where the unit rate is set to 0p. Your supplier uses smart meter data (usually half-hourly readings) to bill each time band correctly.

Standing charges still apply

Even if you use no electricity during the paid periods, you’ll usually still pay a daily standing charge. These vary by region and supplier, and can be a significant part of the bill for low users.

The “paid” unit rates are often higher

Many free-evening tariffs offset the cost by charging more outside the free window (and sometimes have different rates for peak/off-peak). That’s why comparing only the free slot is misleading.

Eligibility is the deal-breaker. Many tariffs require a working smart meter, specific payment method (e.g., monthly Direct Debit), and may be restricted by region or customer status (new/existing). Always check the supplier’s tariff information before switching.

Compare “free evening electricity” tariffs: what to look at

To decide whether a free-evenings tariff is genuinely good value for you, focus on the whole bill: standing charge + unit rates across the whole week, based on when you actually use electricity.

What you’re comparing Why it matters What to check (UK-specific) Good sign
Free window (times & days) This is where you can shift usage to reduce cost. Exact start/end times, whether it’s weekdays, weekends, or limited evenings; whether bank holidays count. You can reliably use/charge during the full slot.
Unit rate outside the free slot Often higher, can outweigh the “free” benefit. Any peak rates, daytime rates, and whether prices are fixed or variable; rules for price changes. Non-free rates are competitive for your usage pattern.
Standing charge Paid daily regardless of usage; varies by region. Your electricity region (set by postcode); note prepay vs credit differences if applicable. Standing charge is not meaningfully higher than alternatives.
Meter/payment eligibility You can’t benefit if you can’t join or be billed correctly. Smart meter requirement, half-hourly consent, Direct Debit requirement, credit checks (if any). Clear eligibility criteria and simple onboarding.
Exit fees & tariff length You might want to leave if it doesn’t suit. Exit fees on fixed tariffs, cooling-off rights, whether it’s a rolling plan. Low/no exit fees or short commitment (where possible).

Decision checklist (quick)

1) Can you shift at least 15–30% of your weekly usage into the free slot?
If you have an EV, this could be most of your charging. If you don’t, think laundry, dishwasher, electric cooking.
2) Is the paid unit rate still acceptable for the rest of your week?
A higher daytime rate can erase free-evening benefits for high daytime households.
3) Do you have (or can you get) a smart meter that sends readings reliably?
No smart reads often means no accurate time-of-use billing.
4) Are there exit fees, and what’s your fallback if it doesn’t work?
If you’re unsure, prioritise flexibility and low fees.

Two realistic scenarios (with numbers)

These examples show how the maths behaves. They’re illustrative only (rates vary by supplier, region and tariff).

Scenario A: EV driver who can charge in the free slot (likely to benefit)

  • Weekly use: 120 kWh (including EV charging)
  • Shifted into free evenings: 50 kWh/week
  • Tariff assumption: Free slot 0p/kWh; paid unit rate 32p/kWh; standing charge ignored for comparison (same on both tariffs)
  • Cost on free-evenings tariff (units only): (120-50)=70 kWh × £0.32 = £22.40/week
  • Typical flat rate comparator: 27p/kWh ? 120 × £0.27 = £32.40/week
  • Difference (units only): ~£10/week less on free-evenings in this scenario

Why it works: a large, controllable load (EV) is moved into the zero-rate window.

Scenario B: No EV, modest shifting (may not benefit)

  • Weekly use: 55 kWh
  • Shifted into free evenings: 8 kWh/week
  • Tariff assumption: Free slot 0p/kWh; paid unit rate 32p/kWh; flat rate comparator 27p/kWh; standing charge ignored for comparison
  • Cost on free-evenings tariff (units only): (55-8)=47 kWh × £0.32 = £15.04/week
  • Flat rate comparator: 55 × £0.27 = £14.85/week
  • Difference (units only): ~19p/week more on free-evenings in this scenario

Why it fails: you’re not moving enough usage into the free window to offset a higher paid unit rate.

Don’t skip standing charges. If the free-evenings tariff has a higher standing charge in your region, the break-even point moves and you may need more shifted usage.

Costs, exclusions and common pitfalls (UK)

“Free evenings” can be great, but the fine print matters. Here are the most common reasons people don’t get the expected outcome.

1) The free window is narrower than you expect

Some tariffs offer only 1–3 hours, or only on weekends. If your EV needs a long charge, you may spill into paid time.

Check: does the free rate apply to all consumption in that window, or only to EV charging through a specific app/device?

2) Higher rates outside the window

If your home uses electricity heavily at breakfast/lunchtime, the higher paid rate can outweigh the free slot.

Typical “hard to move” usage includes cooking, showers (electric), daytime heating (heat pumps), and home working loads.

3) Smart meter and half-hourly data requirements

Time-of-use billing usually needs half-hourly reads. If your smart meter isn’t communicating reliably, billing can become complex.

Check: whether you need to give consent for half-hourly readings and how you can change that preference.

4) Payment method restrictions

Some of these tariffs are credit-only (e.g., monthly Direct Debit) and may not be available on prepayment meters.

If you’re on prepay, prioritise eligibility first; the “best tariff” is the one you can actually join.

5) Exit fees (fixed plans)

If you’re locking into a fixed deal, an exit fee can make it expensive to leave if the tariff doesn’t match your routine.

Always check the tariff information label for exit fees and contract length.

6) Gas isn’t “free”

Most “free evenings” offers apply to electricity only. If you’re dual fuel, don’t assume the gas side is especially competitive.

Compare electricity and gas prices separately, plus the combined standing charges.

Important: Suppliers can change tariff availability, eligibility and pricing. Always confirm the latest tariff terms before you switch. If you’re in the middle of a switch and something doesn’t look right, you typically have a 14-day cooling-off period for distance sales (terms apply).

FAQs: free evening electricity tariffs (UK)

Are free evening tariffs really free?

They can be 0p/kWh for electricity usage during a specific time window, but you’ll usually still pay a standing charge, and the unit rate outside the free window may be higher than other tariffs.

Do I need a smart meter?

In most cases, yes. Time-of-use billing typically relies on half-hourly smart meter readings. If you don’t have a smart meter, ask the supplier whether the tariff is available and how billing is handled.

Can I get free evenings on a prepayment meter?

Sometimes, but many free-evenings style tariffs are credit-meter and Direct Debit only. If you’re on prepay, your options may be more limited and depend on the supplier and meter type.

Will it work with Economy 7 or other multi-rate meters?

It depends. Some suppliers require a standard smart meter setup to support their specific time bands. If you have Economy 7 (or other legacy multi-rate arrangements), check whether you’ll need a meter configuration change and what that means for your billing.

What if I miss the free window by a few minutes?

Any electricity used outside the defined time band is billed at the relevant paid rate. For EV charging, set schedules with a buffer (and consider the car/changer ramp-up) so the bulk of consumption lands inside the free slot.

Do these tariffs apply to all household electricity, or only EV charging?

It varies by product. Some tariffs apply the free rate to all electricity usage during the window; others are structured around EV charging and may have specific requirements. Always read the tariff terms.

Are there exit fees if it’s not right for me?

Some fixed tariffs have exit fees; rolling variable tariffs typically don’t (but prices can change). Check the tariff information for contract length, exit fees, and your rights during the cooling-off period.

Can I switch if I’m renting?

Usually yes, as long as you pay the bills and your tenancy agreement doesn’t include energy as part of the rent. If a smart meter installation is needed, you may need the landlord’s permission for any physical changes.

Trust, methodology and sources

Editorial trust signals

How we assess “best” for free evening electricity

Because “best” depends on when you use electricity, we focus on the factors that most strongly change outcomes for UK households:

  • Total estimated cost using time bands (not just the free window)
  • Standing charge differences by region
  • Eligibility constraints (smart meter, payment method, customer status)
  • Tariff rules (days/times, price change rules, exit fees)
  • Practical fit for real routines (EV charging, appliance scheduling)

Assumptions and limitations (read this before deciding)

  • Rates change: We don’t promise a specific price; suppliers can update tariffs and availability.
  • Regional variation: Electricity standing charges and unit rates vary by region (postcode).
  • Usage pattern matters: Two households with the same annual kWh can pay very different amounts based on time-of-day usage.
  • Smart meter performance: If half-hourly reads aren’t received reliably, time-of-use billing may be affected.
  • Examples are illustrative: Scenario maths ignores standing charges to isolate the effect of time bands; your actual bill will include standing charges.

Sources (UK)

Note: Northern Ireland has a different energy market and regulator; this page is focused on Great Britain unless stated otherwise.

Ready to see if a free-evenings tariff suits your home?

Get matched to tariffs available for your postcode and meter setup. We’ll focus on the true weekly cost, not just the free window.

Get your energy quote Re-read the key takeaways

EnergyPlus is a comparison service. Results depend on supplier availability and eligibility. Always check tariff terms before switching.

Back to EV Charger



Updated on 19 Mar 2026