Energy is complicated. Gen makes it simple.
Gen is your own personalised energy consultant. He reads your smart meter, knows your home, and answers any energy question in plain English, with charts that make sense and a clear next step.
No hardware. No contracts. No subscription.
On a computer? Log in on desktop or register online.
See it. Ask about it. Act on it.
Watch how Gen turns confusing bills and meter readings into straight answers, assesses every upgrade for your home and shows where you rank in the UK.
Electricity and gas from your smart meter, in kWh and pounds, compared with homes like yours.
Plain-English answers about your bills, usage and home, with a chart and a next step.
Tariffs, upgrade assessments, grants and vetted installers, in one free app.
Your energy bill, before and after Gen.
Estimated readings, cubic metres, calorific values, standing charges. Energy bills raise more questions than they answer. Gen reads yours and tells you what it actually means.
Account 0000 1234 5678
Bill number 88213547
Your energy bill
| Balance brought forward | £24.15 DR |
| Payments received, thank you | −£180.00 |
| Charges this period (see over) | £192.68 |
on or after 18 November
Electricity · Economy 7? · MPAN 13 801 0012 3456 789
| Register | Previous | Present | kWh |
|---|---|---|---|
| Day | 41208 (E)? | 41446 (A) | 238 |
| Night | 18774 (E) | 18886 (A) | 112 |
| Day units 238 kWh at 28.62p | £68.12 |
| Night units 112 kWh at 14.21p | £15.92 |
| Standing charge? 30 days at 53.07p | £15.92 |
| VAT at 5% on £99.96 | £5.00 |
| Electricity charges | £104.96 |
Gas · MPRN 7412 9935 06 · Meter G4 7731042
| Previous | Present | Used |
|---|---|---|
| 04512.40 (E) | 04601.65 (A) | 89.25 m³? |
| Gas 1,001.4 kWh at 7.492p | £75.03 |
| Standing charge 30 days at 28.38p | £8.51 |
| VAT at 5% on £83.54 | £4.18 |
| Gas charges | £87.72 |
Ask Gen
Gen · your bill, explainedThis month cost £192.68, up £41.30.
Most of the rise is gas, as the heating came back on. You only pay £36.83 now because your Direct Debit has already covered the rest.
Your bill, translated
Example bill for a sample home. Figures are illustrative.
Real questions. Straight answers.
Gen answers first, shows you the numbers that matter in a chart you can read at a glance, then gives you one useful next step. Every example uses a sample home.
Watch Gen answer, or tap any question yourself.
See exactly what your home uses. Hour by hour.
SmartGen connects to your smart meter, so you see your measured electricity and gas use rather than estimated readings. Switch between kWh and pounds, and look back by the hour, day, week, month or year.
Sample home. Your own figures come straight from your smart meter.
One app for your whole home’s energy.
ReportsDetailed solar and heat pump reportsRoof analysis, generation, savings and running costs for your home.How it works
GrantsFind the grants you could claimChecked against the schemes available now, like the Boiler Upgrade Scheme.How it works
InstallersBook a SmartGen-vetted installerChoose an installer and a time, and get a competitive quote.How it works
SwitchingTwo tariffs, side by sideThe standard comparison and an AI Choice built around how you use energy.Features
Moving homeKnow your new bill before you moveThe Move Estimator prices energy for the home you’re viewing.Features
UpgradesEvery upgrade assessedSolar, heat pumps, insulation, cladding, boilers, glazing and EV charging.Features
Up and running in three steps.
You need a SMETS1 or SMETS2 smart meter, the type most UK suppliers have fitted. If you have an in-home display from your supplier, you very likely have one.
Get the free app
Download SmartGen on iPhone or Android, or register online, and create your account.
Connect your smart meter
Add your address, verify your account and give your consent. SmartGen does the rest. No extra hardware.
See your energy, then ask Gen
Your usage and score appear, and Gen is ready for your first question.
What will I need?
Your home address, a compatible smart meter and a few minutes. There is nothing to install and no extra hardware.
How is my meter connected?
Once your account is verified and you’ve given consent, SmartGen reads your meter securely through the national smart meter network, via our authorised data partner, n3rgy.
When will I see my data?
Usually within a day or so. Your meter records half-hourly readings, which normally arrive the following day, so SmartGen is up to date but not real time.
Can I disconnect?
Yes. You can withdraw your consent at any time and SmartGen stops collecting your meter data. Your data is never sold.
Free to download and free to use. More questions answered
Everything you need to know.
What is Gen?
Gen is SmartGen’s AI energy assistant, live now in the SmartGen app. You ask him questions in everyday language and he answers using your smart meter data, your home’s details and your SmartGen assessments. He explains what’s happening, what it means for you and what you could do next.
What can I ask Gen?
Almost anything about your home’s energy: how your usage has changed, how you compare with similar homes, why your bill went up, whether solar or a heat pump could suit you, how to improve your score, what a standing charge is, and simple ways to save today.
What can Gen assess?
Gen can assess solar panels and home batteries, heat pumps, boiler upgrades, smart thermostats and heating controls, loft, cavity and solid wall insulation, external wall insulation and cladding, double or triple glazing, EV charging, and grant and support schemes worth checking. He uses your real usage and your home’s details, then builds a short, medium and long-term plan so you tackle things in the right order.
Are Gen’s figures guaranteed?
No. Gen shows savings and assessments as estimates, and tells you which figures come from your meter and which are assumptions. A solar or heat pump assessment is a starting point. An approved installer’s survey is always needed before you decide.
Do I need a smart meter to use SmartGen?
Yes. SmartGen connects directly to your SMETS1 or SMETS2 smart meter to analyse your real energy usage. Without a smart meter we can’t generate your personalised insights or SmartGen Score.
How does SmartGen actually save me money?
SmartGen analyses your real smart meter data and benchmarks your home against similar properties of comparable size and usage. We identify where you may be over-consuming and then generate AI-driven recommendations tailored to your home.
You receive a personalised action plan covering short-term behaviour changes, medium-term improvements and longer-term optimisation opportunities. As your usage improves, your SmartGen Score improves and so do your savings.
Is SmartGen free to use?
Yes. There’s no cost to download the app or connect your smart meter. We may earn commission if you switch energy provider through SmartGen, but our recommendations are always driven by your usage data.
How is SmartGen different from my supplier’s app?
Supplier apps show you past usage. SmartGen turns your data into intelligence. We analyse how you use energy, benchmark your home against similar properties and generate AI-driven reports with short, medium and long-term recommendations. You receive a live SmartGen Score, a personalised improvement plan, gamified achievements, community comparisons and CO₂ impact insights, alongside smarter tariff optimisation when appropriate. And now you can simply ask Gen.
How does SmartGen calculate my score?
Your combined score is out of 100. Up to 70 points are your SmartGen Score, which comes from your real smart meter data compared with similar homes by type, floor area and EPC rating. Up to 30 points are your Eco Boost Score, from your answers about your heating, insulation, glazing, smart devices and appliances, so home improvements count too. Your score updates as your usage and your home change.
Why is switching energy with SmartGen better?
SmartGen offers two switching options. First, the SmartGen Savings Promise, an estimated saving based on your real smart meter data. If we don’t deliver the projected saving, we’ll pay you up to £200 on single fuel or £300 on dual fuel. Conditions apply and are shown in full before you switch.
Second, our AI Optimised Plan, where we analyse how and when you use energy to find the tariff with the lowest estimated overall cost for your pattern, from the tariffs we can compare. That may not always have the cheapest daytime unit rate.
Still have questions? Chat to our friendly team.
