How can we help you?

Find out more about us and how it all works, hopefully we have it covered. If you still have unanswered questions please get in touch at or give us a call on 029 2000 2882

Frequently asked questions

We’re a Cardiff based business with big ideas. We work closely with our partners through every stage of building your new home, helping your home use as little energy as possible and using renewable energy as standard. Sero is helping to reduce carbon emissions and fight climate change, but we’re not being unrealistic, we’re not asking our customers to simply stop using any energy. We are building renewable energy sources into homes and sourcing 100% renewable.

You can reach our Cardiff based contact centre by email: or you can call us on 029 2000 2882

We are not a traditional energy supplier who makes money by selling you more energy. We work to find the best value energy around for you. That means you are always on the best deal, no more switching, no more limited time offers There is a small service charge for Sero Life service but this is notably less than the amount you will save on your energy bill.

Sero Energy buys energy from licensed suppliers to supply Sero Life customers, and we are always working to make sure you are getting the best deal. We switch so you don’t have to, making life easier and saving our planet at the same time.

You will be billed monthly (in advance) a set, pre-agreed amount so there are no surprises. We will set up a direct debit when you join Sero Life to make things nice and easy.

That really does depend on you. The energy saving equipment in your home will  Every person and family are different, so when you tell us how you live, we tailor a plan so that you are only paying for the energy you need, when you need it. If how you live changes, a new baby for example, you can change your plan quickly and easily.

Yes, of course. You’re not locked into a contract. There are no exit fees unless some of the capital equipment has been paid for by us. If you decide to leave Sero Life, you can choose to continue to use the free unoptimised Sero Life app, or you can choose to leave Sero completely and replace the hardware in your home to a different technology.

The Sero platform is constantly working to make sure we buy and store energy when it is cheapest. The system will also make sure you are using less energy, by tailoring your energy use to your lifestyle.

We’re not going to twist your arm, you don’t have to join us. But If you want to take advantage of all the benefits of the Sero platform (lower bills, complete control, save the planet!) you will need to sign up to Sero Life. Of course, you are free to choose any supplier and you are free to leave us at any time.

No, not at all. Our technology ‘talks’ to your meter and we’ll be able to take a reading every half an hour! The App will also show you how you are doing against predictions.

You will be able to see when best to use energy in your app, but your heating system, battery and electric vehicle charger (if you have one) will automatically use energy at the best time for you. (so you dont have to worry about it) There will be times when using electricity is greener or cheaper than others, so you can choose the greenest time to do your washing for example.

No, we are here to help and can do it for you if you like, there is also an easy to follow, step by step guide on the app.

No problem, it’s easy to do on the app, the website or you can give us a call on 029 2000 2882

The renewable energy technologies are controlled by a smart home energy management system called The Bee. The system uses the comfort level you have said you want, at the time you want it, to work out the best way to meet your comfort needs.

Just tell us you are away either on the app or the website and we can make sure your home isn’t using any energy you don’t need to use by setting your schedule to ‘away’. Tell us when you are back and you will have a warm home and hot water waiting for you.

You don’t have to change your lifestyle, but the Sero Life platform will mean you have complete control of how you use energy and will help you to use less energy from the grid, saving you money and helping to save the planet by lowering your emissions.

When the sun shines on the solar panels they absorb the energy, creating electricity which is then used to power the appliances in your home, with any excess being stored in your battery.

Green energy comes from natural sources such as sunlight, wind, rain, tides, plants, algae and the heat of the earth. These energy resources are renewable, meaning they’re naturally replenished. Fossil fuels are not renewable, they take millions of years to develop and when they are gone, they are gone.

Renewable energy is energy that is collected from renewable sources, which are naturally replenished, such as sunlight, wind, rain, tides, waves, and geothermal heat.

There are lots of good reasons to use renewables, not least you would be helping to reduce the amount of carbon dioxide and other greenhouse gases that go into the air.

Our increasing carbon footprint is having profound effects on the environment. Rising temperatures and changes to weather patterns are changing where plants can grow and sea levels are rising. As the temperature of our planet increases rising seas will erode shorelines and destroy ecosystems, coastal cities and towns could become underwater.

No, unlike lead-acid batteries (like you have in a car), our Batteries do not create harmful emissions.

No, the battery has a small cooling fan, but it is very quiet and isn’t always on.

You will get an alert/ notification on your app. Don’t worry, we’ll get an alert at the same time and will be on the case!

There are times during the day that your solar panels are making lots of energy, and peak times you will use energy. These are not always at the same time of the day. The battery allows energy to be stored when production is high and then used when it is needed but production is lower, making the most of the clean energy you generate.

It depends on the exact battery installed in your home but at least 5kWh, which is enough to run a TV for 30 hours (an LCD TV)

Yes! Solar panels don’t need it to be warm to work, they just need it to be bright and sunny. Of course in the winter months the days are shorter and the sun doesn’t get as high in the sky, so the panels will make less energy than the summer, but they will still work.

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You can call us on 029 2000 2882

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