E.ON Next smart meter and time-of-use tariffs explained
A practical UK guide to what a smart meter does, how time-of-use tariffs work in real life, and what to check before you switch. No made-up rates — just the questions that matter and how to compare live options for your postcode.
- Clear explanation of smart meters, half-hourly readings, and off-peak pricing
- Who time-of-use can suit (and who it often doesn’t)
- Two realistic scenarios with worked, estimated numbers and assumptions
Figures on this page are examples only. Availability and prices vary by postcode, meter type and payment method.
Fast answer
E.ON Next smart meter and time-of-use tariffs explained: the key point is that you need a working smart meter sending half-hourly readings for time-of-use pricing, and your costs depend on when you use electricity (not just how much). If you can shift demand off-peak, it may help; if not, it can cost more.
What a smart meter changes
Your meter can automatically send readings, and (if you consent) suppliers can use more granular data to bill time-based rates.
What a time-of-use tariff changes
Electricity has different unit rates at different times. The ‘best’ tariff depends on your routine and appliances.
The two checks people miss
Check your meter is communicating reliably, and check whether your peak-time use is unavoidable (cooking, baths, tumble dryer).
If you’re not sure what you’re on now, grab a recent bill: look for your tariff name, payment method (Direct Debit / pay-as-you-go / on receipt of bill) and whether you have a smart meter (often shown as “smart” or “advanced” meter readings). If anything’s unclear, use the quote form to compare live options for your postcode.
How E.ON Next, smart meters and time-of-use fit together
E.ON Next is a UK domestic energy supplier. Like other suppliers, it can offer smart-meter tariffs where the unit rate varies by time. The important bit isn’t the brand — it’s whether your home setup supports the tariff structure, and whether your usage pattern matches it.
Smart meter basics (UK)
- What it is
- A gas and/or electricity meter that can send readings automatically and support more frequent billing data. Many homes also get an in-home display (IHD) showing near real-time usage.
- Why it matters for time-of-use
- Time-of-use pricing needs readings broken into time blocks (often half-hourly). Without reliable smart readings, a time-of-use tariff can be awkward to bill accurately.
- Data and consent
- In the UK, you can control how often your smart meter data is shared for billing and other purposes. If you’re considering time-of-use, you usually need more frequent data for billing to work properly.
Quick sense-check: if you’ve had estimated bills, a missing IHD, or messages about “smart meter not communicating”, fix that first. A time-of-use tariff is built on accurate time-based readings.
What “time-of-use” usually means
A time-of-use tariff is any electricity tariff where the unit price varies by time window (for example, cheaper overnight and higher during the evening peak). The exact windows and prices vary by tariff and can change.
- Common use cases: EV charging, heat pumps, storage heaters, home batteries
- What you trade: lower off-peak unit rates vs higher peak rates (and sometimes more complexity)
Gas is usually not time-of-use for most homes. Most time-based pricing is on electricity only.
Two realistic scenarios (with estimated numbers)
These aren’t predictions or quotes. They’re worked examples so you can sanity-check whether time-of-use is even worth your time before you compare live prices.
Scenario A: EV driver who can charge overnight
Assumptions: 10k miles/year, EV efficiency ~3.5 miles/kWh, so ~2,850kWh/year for charging. Household electricity (non-EV) ~2,700kWh/year. You can shift 80% of EV charging into off-peak windows, but your cooking and evening use stays where it is.
Rule of thumb: if a tariff’s off-peak unit rate is meaningfully lower than its peak rate is higher, and you can move a large chunk of load (EV) off-peak, time-of-use can work. If you only move a small amount, the peak premium often wipes it out.
Scenario B: No EV, flexible laundry but busy evenings
Assumptions: electricity ~2,900kWh/year. You can move 2–3 appliance runs a week (washing machine/dishwasher/tumble dryer) to off-peak. That might be roughly 5–10kWh/week, or ~260–520kWh/year shifted — useful, but not huge.
Rule of thumb: without a big flexible load (EV, battery, heat pump with smart controls), time-of-use can feel like effort for limited upside. You may still prefer a simpler tariff with predictable costs.
If you want a quick estimate of your shiftable electricity: look at the big hitters. A typical washing cycle might use around 0.5–1.5kWh, tumble drying can be several kWh per load, and EV charging is often 7–40kWh per session depending on how far you’ve driven. Your appliances vary — check manuals if you want accuracy.
Compare live time-of-use options (whole of market)
Tariff names, time windows, and eligibility change frequently. The safest way to check what’s available for your home is to compare using your postcode and current setup. We’ll show options across the market (not just one supplier) so you can decide if E.ON Next is right for you.
What you’ll need
- Postcode (tariffs are priced by region)
- Whether you pay by Direct Debit or another method
- Rough annual usage (or a recent bill)
If you’re renting: you can usually switch supplier, but check your tenancy agreement and make sure you’ve got the landlord’s permission for any meter changes.
Get a quote (takes a couple of minutes)
A practical comparison: smart meter vs time-of-use vs standard tariffs
This table avoids supplier claims and focuses on what you can verify at home. Use it to decide what to compare in your quote results.
| What you’re choosing | What you need | What can go well | What can trip you up |
|---|---|---|---|
| Standard single-rate electricity tariff | Any working electricity meter | Simple bills; no behaviour change needed | No cheaper off-peak window to take advantage of |
| Smart meter on a standard tariff | Smart meter installed and communicating | Accurate bills; easier switching; fewer estimated reads | If comms fail, you may see estimates again |
| Time-of-use electricity tariff | Smart meter with half-hourly readings for billing (plus consent) | Lower off-peak costs if you can shift load (EV/battery/heat pump) | Higher peak rates can hurt if most use is evenings; more to keep track of |
Decision checklist (print this mentally)
- I have (or can get) a smart meter that sends readings reliably.
- I can shift at least one big load off-peak (EV charging, battery charging, heat pump scheduling, storage heating).
- I’m comfortable with bills that depend on when I use electricity.
- I’ve checked my current tariff for exit fees or switching restrictions.
Who time-of-use often suits (and who it doesn’t)
Often suits
EV owners, home battery households, some heat pump users, storage heater setups, people happy to run appliances overnight.
Often not a great fit
Busy evening peak usage you can’t shift, lots of home cooking at peak times, limited flexibility, or you prefer predictable bills.
If you’re in the middle, compare both: a time-of-use option and a good-value single-rate tariff. The cheaper one isn’t always the clever-sounding one.
Costs, exclusions and common pitfalls
Standing charges still apply
Most domestic tariffs have a daily standing charge as well as unit rates. Time-of-use changes when you pay more or less per kWh; it doesn’t usually remove fixed charges.
Peak-rate shock
The risk is simple: if your main usage sits in the expensive window, you can pay more. Watch out for tumble drying, electric showers, immersion heaters and cooking clusters in the early evening.
Smart meter not sending readings
If your meter isn’t communicating, billing can fall back to estimates. That’s frustrating on any tariff, but it’s especially messy when prices vary by time.
Exclusions and eligibility can be real
Some tariffs only work with certain meter setups, payment methods, or data-sharing settings. That’s normal across the industry, and it’s why a postcode-based comparison is more reliable than advice from forums.
If you’re on a fixed deal, check for exit fees before switching. Ofgem explains how exit fees and switching rules work for domestic customers.
A quick habit that helps
For a week, jot down what you use after 4pm: cooking, laundry, showers, immersion, gaming PCs, space heaters. If most of your electricity lives there, be cautious with time-of-use unless you have a big off-peak load to counter it.
Common misunderstandings we see
- “I have a smart meter so I’ll automatically get cheaper rates.” (Smart meters enable options; they don’t guarantee lower prices.)
- “Time-of-use is only for EV owners.” (EVs help, but batteries, storage heating and some heat pump controls can also shift usage.)
- “It’s too risky.” (It can be — but you can compare side-by-side with a standard tariff, and switch again if it’s not working.)
FAQs
Do I need a smart meter for an E.ON Next time-of-use tariff?
In most cases, yes. Time-of-use pricing usually relies on a smart meter providing time-based readings (often half-hourly) so electricity can be billed at different rates through the day. If your meter can’t do that reliably, you may be limited to standard tariffs.
Will a smart meter reduce my bills?
A smart meter doesn’t lower prices by itself. It can reduce estimated bills and help you see (and cut) usage, which may reduce costs if you change behaviour. Any savings depend on your tariff, your consumption, and whether you can shift or reduce electricity use.
Can I get time-of-use pricing if I’m a renter?
Often, yes — you can usually switch supplier as the bill payer. But changing meter equipment (including installing a smart meter if you don’t have one) can involve landlord permission, and you should keep the landlord informed if anything physical is changed.
What happens if my smart meter stops communicating on a time-of-use tariff?
Suppliers may bill using estimated readings until the issue is fixed, then rebill when actual data arrives. With time-of-use, the timing of consumption matters, so it’s worth reporting comms issues quickly and keeping your own notes or photos of meter readings as backup.
Does time-of-use affect gas prices too?
Usually it’s electricity only. Most domestic gas tariffs charge a single unit rate regardless of time. If you’re comparing dual fuel, check the electricity structure separately from the gas rates.
How do I compare E.ON Next against other suppliers fairly?
Compare using your postcode, payment method, and estimated annual usage, then look at the tariff structure (single-rate vs time-of-use), any contract length and exit fees, and how well your routine matches the cheap and expensive windows. A whole-of-market quote makes this much easier than guessing from headlines.
Is time-of-use a good idea if I can’t run appliances overnight?
It can still work if you have another flexible load (like a home battery) or if your household naturally uses less electricity in the expensive windows. If your usage is mostly evenings and you can’t shift much, a standard single-rate tariff is often simpler and may work out cheaper.
What should I do if I’m struggling to pay my energy bill?
Speak to your supplier as soon as you can — they must help you agree a payment plan you can afford. For independent help, Citizens Advice explains support options, including grants and steps if you’re in debt.
Trust, methodology and sources
Page accountability
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- September 2026
How we assess this (and the limits)
We focus on the parts that stay true even as tariffs change: meter requirements, how time-of-use billing works, and household fit. We don’t publish supplier-specific unit rates, windows or tariff names here because they change and can mislead.
The scenarios use simple assumptions to illustrate trade-offs. Your real outcome depends on your consumption profile, regional pricing, payment method, and the exact tariff terms available at the time you apply.
Ready to check E.ON Next against the market?
Use your postcode to see live time-of-use and standard tariffs available right now. If the numbers don’t stack up, you’ll see alternatives — no guesswork.
Back to Energy Suppliers