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What is Smarty+?
Smarty+ is a solution providing real-time insight into the customer’s energy data.
As soon as the Smarty+ dongle is connected to the Smarty meter (without any intervention of the electrician or the grid operator (DSO i.e. Creos, Sudstroum, Electris, City of Diekirch or City of Ettelbruck)), the customer can consult his energy data in real time on his tablet or smartphone in the Smarty+ application. Furthermore, if the customer wishes, he can choose to share his data with his DSO and thus contribute to improving the management of electricity distribution grids in order to facilitate the energy transition. When sharing his information with other service providers, to be found in the “Connect” tab of the application, the customer may also benefit from additional services.
What are the benefits of Smarty+? / What does Smarty+ do for me?
Smarty+ will allow you to monitor your energy consumption and determine your major consumers, as well as supervise the production of your photovoltaic installation (a separate Smarty+ dongle is required for each of your Smarty electricity meters). You can try to improve your daily behaviour to reduce your energy consumption to a minimum and save money. By adapting your consumption to the production times of renewable energies or by sharing your data with your DSO or research institutes, you can actively contribute to a successful energy transition. Voluntary data sharing with your DSO will help them to estimate the actual load on the distribution network more accurately and to use the existing network capacities more efficiently, which in return will reduce the network usage costs for the end customer.
In the future, further services will be available that will allow you to take advantage of other opportunities provided by professional processing of your energy data.
Do I have to change my energy supplier to use Smarty+?
No. The Smarty+ dongle can be connected to the Smarty smart meter independently of your energy supplier. (Your energy supplier will not be informed).
How do I know if Smarty+ is compatible with my home / my electricity meter?
The Smarty+ dongle is compatible with all Smarty meters installed in Luxembourg.
Visit www.smarty.lu and choose your DSO for more information on the progress of the smart meter rollout.
*Note (not relevant for standard 40 A residential meters): Smartys above 100 A measure the current after a transformer ratio has been applied, as a direct measurement is not possible at this current intensity. The Smarty+ app does not yet allow the user to enter this transformer ratio, which is why the values transmitted via the P1 Port and displayed in the app would be much lower than the energy consumed in reality. However, we are currently working on integrating this functionality!
What technology does Smarty+ use?
The data will be communicated to the cloud via a WiFi connection and via a secure Internet connection. A variant of the dongle, which will be available soon, will use a new mobile technology that has been developed for the Internet of Things.
Where can I buy Smarty+ and how much does it cost?
The Smarty+ dongle is sold at a fixed price of €35 via the “Letzshop” platform with home delivery option. Downloading the application and consulting the data in real time is free and does not require a subscription.
However, you have the possibility to share your data with service providers of your choice, to benefit from further offers. These services will be subject to the conditions and fees stipulated by each service provider.
What are the dimensions of the dongle?
The housing has a diameter of 80 mm and a height of 30 mm. The connection cable supplied with the dongle is 1 metre long, but it can be replaced by a cable of any length with two RJ12 connectors.
My dongle doesn’t seem to be working, what should I do?
First check if the LED on the back of the dongle is blinking while the dongle is connected to the meter. If this is not the case, you can send a message to firstname.lastname@example.org to have your dongle replaced. If the LED on your dongle is flashing, but it is not communicating correctly with your mobile application, please consult the user manual to determine the cause of the problem you are experiencing and possibly solve it yourself, for example by resetting the dongle. In case of persistent difficulties, please call the number 2624 4444 or use our contact form.
I no longer wish to use the dongle, what should I do?
Disconnecting the Smarty+ dongle from your electricity meter will completely interrupt the reading and transmission of energy data. Please note that from this moment on, the data will be lost and cannot be recovered when the dongle is reconnected later on.
By accessing your account in the Smarty+ application, you also have the option to delete all your data and your user account.
Disconnecting your dongle and deleting your account will not necessarily terminate the contract with a service provider. For more information, please refer to the specific terms and conditions of the subscribed service.
How do I setup my Smarty+ dongle and who will install it? Does the installation require a professional? How long does it take?
The Smarty+ dongle can be installed by yourself without any intervention of your DSO or an electrician*: To access the P1 port you can remove the green cover of the Smarty meter by pushing and pulling it down. The P1 port is now accessible and the dongle can be connected to it. The cover can then be reattached by leading the Smarty+ dongle connection cable through the small hole at the bottom edge of the green cover. This step can be completed within a few minutes.
Do not remove the seals placed by your DSO on the Smarty meter (this action would trigger a fraud alert at Luxmetering).
* For safety reasons, in older installations, smart meters may be installed behind a plexiglass protection (to avoid exposure to unshielded live parts). In these cases, the intervention of the DSO is required. It will be free of charge and you can contact your DSO via the following numbers:
- Creos: 2624 4000
- Sudstroum: 26 78 37 87686
- Electris: 8002 8032
- City of Diekirch: 808780 501
- City of Ettelbruck: 81 91 81 221
How does the activation of Smarty+ work?
The commissioning is explained step by step in the Smarty+ application. You will be guided with precise instructions when connecting the Smarty+ dongle, creating your account, associating the dongle with your account, activating communication via NB-IOT or your WiFi network and decrypting the data using the P1 key.
The whole process may take about ten minutes.
Does the Smarty+ dongle need to be connected to an electrical outlet?
No, the 250 milliamperes at 5 volts available through the P1 port of the Smarty smart meter to which the Smarty+ dongle is connected are sufficient to power the Smarty+ dongle and to allow pairing and communication to the WiFi as well as reading, decrypting and transmitting data.
How does the Smarty+ dongle receive information from my Smarty meter?
The Smarty meter feeds all available data in a cyclical manner through the P1 customer port.
According to the specifications of the Luxembourg smart meter, this output is encrypted, using an advanced encryption standard to guarantee the confidentiality of the end user data.
Access to my Smarty meter is difficult. I can’t connect my Smarty+ dongle. What can I do?
If your Smarty meter is located in the technical room of your residence to which you do not have access, please contact your property manager to give you access.
If your Smarty meter is installed behind a plexiglass protection, please contact your DSO to help you with the installation of the Smarty+ dongle.
- Creos: 2624 4000
- Sudstroum: 26 78 37 87686
- Electris: 8002 8032
- Ville de Diekirch: 808780 501
- Ville d’Ettelbruck: 81 91 81 221
Can I turn my Smarty+ dongle on and off as I wish?
The dongle does not have an on/off button. When the dongle is disconnected from the P1 port of the meter, its power supply is interrupted, and it switches off. During the disconnection time no data will be read, and the data will be lost.
Can I reset my Smarty+ dongle?
To reset your dongle, you must unplug it and plug it back in, while keeping the button pressed until the LED flashes after about 10 seconds. Please also consult the user manual for further information. Before resetting, you may need to deactivate your dongle (Account > My Smarty+ dongles > Choose dongle and deactivate).
I am changing my address. Will I be able to connect my current Smarty+ dongle in my new home?
Yes, you can move your Smarty+ dongle with you. Remember to ask your DSO for the encryption key for the P1 port of your new meter (for more detailed information on the encryption key, please refer to the section “Smarty+ dongle connection -> P1 encryption key”). After the connection to the new meter, you can continue with the setup using the Smarty+ application, described under “How do I setup my Smarty+ dongle and who will install it?“. You may need to deactivate your dongle (Account > My Smarty+ dongles > Choose dongle and deactivate) and reset the dongle to restart the activation process on your new smart meter.
How can my Smarty+ dongle be updated?
Updates will be realised “over the air” as long as your dongle is connected to your Smarty Smart Meter and to a WiFi/mobile network.
What do the different intervals and colours with which the LED flashes mean?
The dongle can indicate its status and possibly an existing error by different flashing sequences and colours. Please refer to the user manual for the correct interpretation of the flashing sequence.
Where can I get the Smarty+ app and how much does it cost?
Downloading and consulting data in the Smarty+ application is free of charge (data charges may apply) and does not require any subscription.
Optionally you are free to transmit your data to service providers who will use your energy data to help you with different functionalities. These services offered by third party service providers will be subject to their terms and conditions.
I can’t download the Smarty+ application. What should I do?
Make sure you are connected to the Luxembourgish app-store and that there is enough memory on your mobile.
How do I start using the Smarty+ dongle?
As soon as the Smarty+ dongle is connected to your smart meter, you can start with the setup by following the different steps and their explanation (account creation, assigning your dongle to your account, entering your WiFi password and your encryption key) in the Smarty+ application.
How is my Smarty+ account created?
Your account will be created by using your email address which you will be prompted for when you set up your Smarty+ dongle through the Smarty+ application. You will then receive a confirmation link which also serves as a “one-time password”, so that you do not need to remember a password.
How do I connect the Smarty+ dongle with my application?
By scanning the QR code on the back of your Smarty+ dongle, your dongle will be linked to your account.
How is the data from my Smarty+ dongle transmitted to my application? Does my phone have to be on the same network as the dongle to receive my data?
The Smarty+ dongle communicates the energy data read from your Smarty meter through your WiFi network or using NB-IOT (available soon) to a cloud platform hosted in Europe using secure communication via https. From this cloud the data will be transmitted to your Smarty+ application. Thus, your smartphone must not be in the same network as the dongle. All this happens in near real time with a delay of only a few seconds.
If there is a power outage, will Smarty+ continue to work?
In the event of a power outage, your Smarty+ dongle will not be powered and will therefore not be able to communicate. As soon as the problem is solved, the dongle will start working normally again.
If there is a WiFi outage, will Smarty+ still work?
In the event of a WiFi outage, data will no longer be transmitted to the cloud and therefore neither you nor your service providers will have any information for the duration of the connection interruption. However, a certain amount of data can be stored locally on the Smarty+ dongle to be sent when the WiFi connection is re-established to complete your charge curve afterwards.
Please note that besides the instantaneous values of your consumption, the index of your total consumption is also communicated. So even if the connection has been interrupted for a while, the total amount of energy consumed can still be determined correctly.
Will my Smarty+ dongle work with applications other than Smarty+?
You may agree to share your data with third party service providers. Each service provider will have the possibility to develop an application or service and may have access to the energy data of customers who choose to subscribe to their service.
In addition, Smarty+ will soon be compatible with Google Home and Apple Homekit.
The “P1 out” port on the back of the Smarty+ dongle will also allow you to access decrypted obis codes using a device with an RJ12 connector. (See Smarty+ dongle datasheet)
How can I add an additional Smarty+ dongle to my account?
An additional Smarty+ dongle can be added by selecting Account > My Smarty+ dongles
Can I connect my Smarty+ dongle to my router via an Ethernet cable?
No, this is not possible.
Do I have to pay attention to a correct configuration of my router when connecting the Smarty+ dongle? Can I use a WiFi repeater to connect my Smarty+ dongle?
Yes. It is important that the standard 2.4 GHz WiFi is supported. Most routers (e.g. Fritzboxes) provide 2.4 and 5 GHz networks. Only 2.4 GHz is accessible by the Smarty+ dongle.
Can I connect my Smarty+ dongle to a free WiFi network?
This option is not supported for security reasons.
My Smarty meter is installed in a room that does not receive a WiFi signal.
We are aware of this possible restriction. That’s why we will soon offer a version using a new mobile technology that has been developed (Internet of Things), so that you can use the Smarty+ dongle even without access to WiFi.
I have a new router. How do I reconnect my Smarty+ dongle to it?
You will need to deactivate (Account > My Smarty+ dongles > Choose dongle and deactivate) and reset your dongle to re-enter the pairing mode.
Is my Smarty+ dongle sensitive to computer viruses because it is connected to the internet?
Your dongle is not sensitive to viruses, because it only sends data and cannot receive data, except for a possible update via “over the air”, which will also be secure. It will not communicate outside secure communications.
How can I access the encryption key for the P1 port of my Smarty meter?
To receive the encryption key for the P1 port of your Smarty meter, please contact your DSO at the corresponding e-mail address, indicating your name, address and the serial number of your meter (number that starts with SAG and is followed by 13 digits, which can be found on the face of your Smarty).
Be aware that only the person on whom the meter is registered, has the right to ask for this information!
How does the encryption key work? How do I use the encryption/encryption key?
The P1 protocol is a clear text protocol. To guarantee the confidentiality of the end-user data, an encryption layer is added to the P1 protocol. This encryption layer is based on the advanced encryption standard AES128-GCM.
This channel has its own security context: a separate encryption key and a dedicated frame counter.
The parameters used for the encryption algorithm are as follows:
- IV is 96 bits = system title (64 bits) | frame counter (32 bits)
- AAD is 17 bytes = 30h || 00112233445566778899AABBCCDDEEFFh
- the label length is 96 bits
Why does my Smarty+ application ask me to re-enter the P1 key?
There are several events that can cause the P1 key to change, such as the installation of a new meter, a move, or a change of the energy supplier. If your key no longer seems to be valid, ask your DSO for it again. You may need to deactivate (Account > My Smarty+ dongles > Choose dongle and deactivate) and reset your dongle in order to enter the new key.
How do I delete my account?
By accessing your account in the Smarty+ application, you have the options to delete all your data and your user account.
Can I export my data for printing and/or viewing on my computer?
Yes, following GDPR requirements you have the option to formulate a specific request through the application to receive via e-mail a link to access a .csv file with all your data stored in the cloud (obis codes from the last 7 days).
Is the Smarty+ application available in different languages?
The languages available are English, German, and French and are part of the localisation, controlled by your device settings.
I have lost my smartphone containing the Smarty+ application. What can I do?
If you are concerned that someone could unlock your phone and access your data, you can reset the Smarty+ dongle by following the steps described under Can I reset my Smarty+ dongle?
I have changed my smartphone. Can I re-install the application?
Yes, you can download the application on your new smartphone and enter the e-mail address you used to create your Smarty+ account to view your Smarty+ dongle(s) with the corresponding data.
What data does Smarty+ collect?
All data provided by the network operator / Luxmetering via the P1 port. More information on the following link: https://www.luxmetering.lu/pdf/SPEC%20-%20E-Meter_P1_specification_20210308.pdf
What are OBIS codes?
OBIS codes (“Object Identification System”) are used in electronic data communication in the energy market to uniquely identify measured values (energy quantities, meter readings) and abstract data in electronic data exchange.
The OBIS code system is described in IEC 62056-61 for the electrical energy environment and in DIN EN 13757-1 for non-electrical environments.
Smarty meters use OBIS codes internally to classify the transmitted data points.
In what intervals is the data sent to the cloud and for how long will it be stored there?
Every ten seconds the current OBIS code values will be transmitted from the Smarty+ dongle to the cloud. This ten second resolution data will be kept in the cloud for seven days and then deleted. Weekly aggregations will be kept for a period of 5 weeks and monthly aggregations will be kept for a period of 13 months.
Why does the cloud operator need my data? What will the cloud operator do with my data?
The cloud operator only needs your email address to associate your Smarty+ dongle with your account and send you your data. They are not able to associate the OBIS code with a specific customer, as neither your name nor your postal address will be available or stored in the cloud.
Who else other than the operator will have access to my data?
If you choose to use only the basic features of the application, no one else will have access to your data. You are free to choose to share your data with your electricity network operator, but this is not mandatory. In return you will receive more detailed graphs for free. You also have the option to subscribe to services offered by third party providers, which use (part of) the data extracted from the P1 port, clearly indicated in the service description in the “Connect” tab of your Smarty+ application.
Where is the data collected by Smarty+ stored?
All data collected by the Smarty+ platform is stored on servers located in the European Union, which means that European data protection laws apply.
How is the security of my information guaranteed?
You are in control of your data. If you decide to share your data, we will ensure that it is communicated via secure communication interfaces. The communication between the Smarty+ dongle and the cloud is secured via TLS.
If I want to stop the Smarty+ service, will my data be retained?
As required by the GDPR, we will delete all data related to an individual who has opted to withdraw from the platform.
Where can I access all the information collected by Smarty+?
In accordance with the requirements of the GDPR, we will provide you, upon request, with a log file containing all the data we have collected from you.
How to delete all data collected by Smarty+?
How can I access my gas and water data in the Smarty+ App?
If you water and gas meters are intelligent and connected to your Smarty electricity meter, your consumption data can be shown in the Smarty+ application. You simply need to contact the responsible network operator to activate the communication of these meters through the P1 port, indicating your name, your address and the serial number (SAGXXXXXXXXXXXX) of your electricity meter and your gas meter (ELSXXXXXXXXXXXX or FLOXXXXXXXXXXXX) or water meter.
If you are connected to a gas network, you will either need to contact Creos (email@example.com), the City of Dudelange (firstname.lastname@example.org) or Sudenergie (former Sudgaz Email: Smartmeter-Gas@sudenergie.lu).
The municipalities are responsible for the distribution of water: Some examples of municipalities who have installed a smart water meter already and connected it to Smarty are the City of Dudelange (email@example.com), the city of Diekirch (firstname.lastname@example.org) and the city of Ettelbruck (email@example.com). Simply contact your municipality to check if they have or will install a smart water meter and ask them to unlock the communication channel to the Smarty if this is the case.
I interrupted the activation process, how can I continue the activation of my dongle?
If you aborted the activation process of your dongle in the Smarty+ app prematurely, e.g. because you still had to request your P1 key, you can continue it at any time at the same step. To do so, please click on “My Smarty+ dongles” in your account settings and select the dongle for which you want to continue the activation.
Can I display all my Smarty electricity meters through one Smarty+ dongle in the Smarty+ app?
No, this is not possible. You need a separate Smarty+ dongle for each of your Smarty meters. In Luxembourg, it is common to record the electricity production of the photovoltaic system via a second Smarty meter. In this case, two dongles are needed to overlay the consumption and production in the app.
Note: Smart meters for gas, water and heat can be connected to the Smarty meter. In these cases, this data can be read via the Smarty+ dongle connected to this Smarty meter. Further information at: https://smartyplus.lu/de/p1-key/