App Help and General Questions

What electric vehicles and charge points are you compatible with?
Our app is compatible with all Tesla vehicles or any electric vehicle using a Rolec HomeSmart EV charger.

Over the next few months, we will be releasing full support for Jaguar, Nissan, Renault and more. We can also integrate with home solar and Powerwall installations. Please email us to learn more: support 'at' ev.energy.
Why do you need my energy tariff details?
Entering your energy tariff details allows us to more accurately calculate the energy price and energy savings of your charging sessions.

If you're on a Flat rate tariff, it'll help us display accurate information on how much your charging is costing. If you're on . a variable rate tariffs, it allow us to optimise your charging for cost as well

When you sign up we'll default to a standard flat-rate tariff. You can enter your tariff at any time in the ev.energy app by navigating to Account > Profile Settings and selecting your tariff from the drop down - if you can't find your tariff, please let us know your supplier, tariff name, tariff times and rates and we will add it to the system!
Will the app work with any energy tariff?
Yes! - We support all electricity tariffs.

We also work with energy suppliers to develop bespoke tariffs for electric vehicle owners, to get you the best deals on the market! For example, Igloo Energy are offering 1,200 free miles of Smart Charging on their low rate Pioneer tariff. If you are interested in finding out more, please contact us or visit: https://igloo.energy/ev

(if you can't find your tariff, please let us know and we will add it to the system)
I’m already on a cheap Economy 7 tariff, how can you provide a better rate than this:
Through out certain times of the year there can be excess energy generate by renewables such as wind and solar. When there is an abundance of this energy, the actual energy prices drop further.
My tariff isn’t in your settings?
If you are on a flat-rate tariff, please select the flat rate that is closest p/kWh that you pay for your home electricity. (If we try to list all tariff names there would be thousands!)

If you are on an EV time-of-use tariff that is not in the list, please email us: support "at" ev.energy and let us know the details of the tariff and we’ll add that to your system.
My country/time-zone isn't in your setting?
We currently have full support for the UK and Ireland but we'll soon be expanding to cover more territories.

Countries outside the UK and Ireland are currently in BETA. Please email us: support "at" ev.energy to let us know your country, address and tariff details and we will get you set up wherever you are.
I’m not interested in ev.energy Smart Charging app, how do I remove my account
Just email us at support 'at' ev.energy with your email that you registered with and we will remove your account and all details from our system.
What does the "Boost" button do?
When your car is set to Smart Charge, we'll slowly turn your charging on and off on a schedule, using the greenest and cheapest energy available. If you need your car charged right away (instead of waiting for a scheduled charge) you can press the Boost button. This will start charging you car immediately at the fastest rate your charger will allow.
What’s this reward system?
The aim of ev.energy is to reduce electricity bills for you, and reduce CO2 emissions for the planet. If you join us on this mission, you’ll earn a £5 Starbucks voucher for every 10 smart charges you complete!

Didn't receive your voucher? No problem, please email us: support "at" ev.energy

(smart charge sessions are >10kWh)
I've got an idea for a new feature in the app...
We want to make the app the best it can be and we're very keen to hear from early adopters. If you have an idea for a new feature or an improvement to an existing feature, please email support 'at' ev.energy.
Where can I get the app?
Our Smart Charging app is available on both iOS and Android. Just search "ev.energy"
How secure is the platform?
Our platform is accessed via HTTPS, which provides the same level of encryption as used by all the online banks. We have firewalls put up on our servers as well as intruder detection systems in place.
Can you integrate with home solar and Powerwall installations?
Yes! We are currently testing our integration with home solar and Powerwall installations. Please email us to learn more: support 'at' ev.energy.

Rolec HomeSmart EV Charger FAQ's

Does the HomeSmart work with any car?
Yes! - The Rolec HomeSmart EV works with all electric vehicles when you charge at home, helping you save money by capturing off-peak rates and reduce the carbon footprint of charging your EV by 20%.
Can the app track my on-the-go charging?
If you have a Tesla, you can use the ev.energy app to track your charging on the go! We will soon be rolling this out for Jaguar, Nissan, Renault and more.
How does the device communicate?
The HomeSmart communicates via a General Packet Radio Service (GPRS) sim card, which is more reliable, secure and simpler to setup for you than products that rely on your home WiFi.
Are there any subscription fees?
The Rolec HomeSmart EV charge point comes with a FREE 3 year-subscription to ev.energy's smart charging service. We guarantee that no subscription charges beyond 3 years will apply if we are not saving you money in the app.


There are several options available to you after the first three years. These cover the GPRS SIM connection and data management, which is more reliable, secure and simpler to setup for you than using Wifi:

Option 1 is to continue to use ev.energy for free, with one of our energy supply partners. ev.energy’s goal is to work with partner energy suppliers to provide you with super cheap charging at home. For example, we currently have a deal in place with Igloo Energy which gives customers 1,200 miles of free charging – see here: https://igloo.energy/ev - and we have more great deals underway with a number of other energy suppliers, include ESB, and a big 6.

Option 2, you can continue to use ev.energy for £2/month with any energy supply company. The saving we deliver though smart charging (reported in the app via smart saving) will be more than £2/month, however if we are not making you a net saving for active users, the subscription will be free.

Option 3, if you don’t want to do smart charging / ev.energy anymore, you can disconnect from ev.energy and just continue to use your charge point as a standard charger. There are no charges to do this.

Hopefully this gives you peace of mind about the advantages of this solution and that you will never be out of pocket.
I've logged in to the ev.energy app, but my Rolec HomeSmart EV can't be found
To ensure only you can control your charge point, the installer registers your email address with your unique charge point ID during commissioning.

Please make sure you have logged in using the same email address that you gave to your installer (note: email addresses can be case sensitive).

If you are still struggling, please contact us (support 'at' ev.energy) with the email you'd like to use, your home address, post-code and the name of your installer. We'll get you set-up quickly and securely.

Tesla Integration FAQ's

I've set my Tesla to Smart Charge with ev.energy, why does my car still charge immediately?
Our system only talks to your Tesla every 30 minutes. This means when you first plug in, you may charge for a short period of time before our system kicks in. To avoid this, we recommend you set a schedule on your car to tell your car to start charging at midnight every night. ev.energy will override this schedule within 30 minutes of you plugging in your vehicle.
I've signed up, but my Tesla isn't Smart Charging.
To control charging, we need to have communications with your car at all times. In your Tesla account settings under Controls > Displays > Energy Saving> 'Power Management', there is a tick box called "always connected" - please ensure this is ticked in your Tesla, to allow us to charge your car using the cheapest greenest energy available.
Why does the app require me to log in with my Tesla username/password?
We use this in order to be able to ready the state of charge of your battery and also to allow us to start and stop charging of your car. Our platform will charge your car based on a combination of the cheapest price of your electricity tariff and the carbon intensity index.
Do you store my Tesla credentials on your servers?
No, we only use the credentials to obtain an access Token to your Tesla. This token is validate for 60 days only. After then we will be locked out from your vehicle. To continue using ev.energy after 60 days, you'll have to log back in to your Tesla account - just head to your "Car Account Settings" in app.
I don’t want to hand my Tesla username/password or token details over, but I’m still interested in Smart Charging.
We understand that not everyone is comfortable with handing over these details. You can still Smart Charge without integrating your car by using one of our integrated charge points like the Rolec HomeSmart EV. If you would like to use this system, please let us know and we can discuss how this can be installed in your garage/driveway.