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We’re phasing out your Dynamos in June 2021

VCharge Dynamos and the supporting app are being phased out. We’re really sorry they’ll no longer be available. 

Here's what that means for you and your home…


Thanks for taking part

We first offered Dynamos to help make homes greener by making standard storage heaters more energy-efficient. But, sadly, as technology has developed over time, we've realised they're not as cost-effective at a large scale as newer tech. That's why we're phasing them out. 

By having this tech in your home, you've helped the planet – thank you. We’ll keep working on finding the best ways to make the UK greener. 


We’re updating your

Because we’re phasing out the Dynamo technology, we’re moving you back to a standard Economy 7 energy plan. If you’re an OVO member or Boost customer we’ll make the change to your Economy 7 plan on 15 June 2021.

You will have 7 hours of off-peak energy

You received 3 extra hours of off-peak energy as part of the Dynamo trial. Now that we’re phasing out the Dynamo technology, we’re switching you back to 7 hours instead of the 10 hours you’re getting at the moment. 

If you’re still an OVO member or a Boost customer we’re sending you an email or letter to let you know what this means for you and your home.

We’ll be in touch with you soon

Because we’re retiring the technology, it’s time for us to come round and take out the Dynamos. Our engineering partner Greenvision will contact you during May to arrange an appointment. When they’re done, your storage heaters will return to the way they were, without their smart functions. 


Keeping you safe when our engineers visit

Your safety is our top priority, so Greenvision’s engineers will always follow the government's latest coronavirus advice. They’ll wear a face covering and keep to social distancing guidelines – find out more about how they'll protect you.

And don’t forget to call Greenvision on 0115 854 7498 if anyone in your household develops coronavirus symptoms or is self-isolating. It’s easy to change your appointment time.

Preparing for an engineer to pop by

It should be easy and straightforward to remove your Dynamos. We expect it to take around 45 minutes for each one. Just remember to switch your storage heaters off at the wall the night before – this means the engineer can work safely.

During the visit, feel free to ask questions. Our engineer should be able to answer most of them while they’re at your home. If not, please call us on 0117 3323 729 while they’re still there (Mon-Fri 9am-5pm, excluding bank holidays). 


The price of each unit of energy you use will stay the same. But this update means you now have 7 hours off-peak energy (rather than 10), so you may need to change your energy habits a bit.

The hours differ slightly between regions. For example, your off-peak hours could go from 12am-5am, 1pm-4pm, 8pm-10pm to just 12am-7am. To help keep your bills down, you'll need to make sure you're charging your heaters and using electricity around the house in your new off-peak hours.

If you’re an OVO member or Boost customer, we’ve contacted you to let you know your new off-peak hours. 

The extra 3 off-peak hours were part of the Dynamo trial, which boosted your original Economy 7 plan to work like an Economy 10 plan. We made this change specifically for homes with Dynamos, which we’re now phasing out. 

You’ll have fewer hours available to heat your water until we remove your Dynamo. You might not notice the difference, but you may if you have a large water cylinder and use lots of hot water during the day.

If you’d like your Dynamos removed before June, no problem – just email us at [email protected] or call us on 0117 3323 729 (Mon-Fri 9am-5pm, excluding bank holidays) and we’ll get it sorted.

Please send us your contact details so our engineers can get in touch. Just email us at [email protected] or call us on 0117 3323 729 (Mon-Fri 9am-5pm, excluding bank holidays). Even if you’re a new tenant or owner, it’s important to do this, as we will still need to remove them from your home.

Please let us know by emailing us at [email protected] or calling 0117 3323 729 (Mon-Fri 9am-5pm, excluding bank holidays).

Here’s what will happen:

  • The engineer will put a dust sheet under the heater to protect your floor from dust and debris 

  • They’ll turn off the energy supply to your heaters (but you’ll still be able to use energy in the rest of your house)

  • The engineer will remove the Dynamos from each of your storage heaters, along with the VStat temperature sensors and the Hub

  • They’ll put the wiring back as it was originally – making sure they meet all the health and safety rules

  • Once your heaters are back to how they were before, the engineer will turn the energy supply on again to make sure they’re working

If anything is different from what you were expecting, please talk to the engineer. They may be able to sort things out on the day. If not, please call 0117 3323 729 (Mon-Fri 9am-5pm, excluding bank holidays).

If your Dynamos are online, we’ll put them into “home alone mode” on 15 June 2021, so they won’t have their smart controls anymore. We'll set them to charge your heaters within your new 7-hour off-peak window, which will be some time between 11pm-8am.

We also won’t be responsible for them anymore. If your Dynamos stop working or you have any issues with them after 31 July 2021, you’ll need to call (and pay for) an electrician to fix or remove them. That’s why it’s really for the best if you let us remove them. If you recheck your contract, you’ll see that we have the right to remove them with 30 days’ written notice.

No, from 31 July 2021 it won’t work anymore.

We often run small-scale projects so we can learn about products and how people get on with them. We sometimes refer to products like this as “trials”, because they may not carry on in the long term.

Our engineers are fully trained and know how best to remove the Dynamos. There might be some small marks left on the walls where we’ve had to remove the devices – but any damage should be minimal and easily fixed with a lick of paint (which you’d need to do yourself).

Of course. You can give us a call on 0117 3323 729 (Mon-Fri 9am-5pm, excluding bank holidays) or drop us an email at [email protected]

If you’d prefer us not to visit your home because of coronavirus, or if someone in your house is unwell or self-isolating, we understand. Just give us a call on 0117 3323 729 (Mon-Fri 9am-5pm, excluding bank holidays) or email us at  [email protected] and we can chat through your options.