Electricity meter – Instructions for use and general information

Caruna's electricity meters are remotely readable, i.e. meter readings do not need to be reported separately. Meter readings come from the meter to our systems via a data connection. 

With remote reading, invoicing is always based on up-to-date electricity consumption. You can view your electricity consumption in the Caruna+ energy monitoring service.

How to use an electricity meter

A The small identifier T1 or T2 indicates which counter is currently in use. 
B Press the change button on the meter screen to change the counter device: 

T0 indicates general electricity consumption, i.e. the number of kilowatt hours (kWh). 
T1 indicates daytime or winter daytime consumption as two-rate hour metering. 
T2 indicates consumption at night or at other times as two-rate hour metering. 
AIKA indicates the time. 
PVM indicates the date. 
TARF indicates the electricity distribution product currently in use, i.e. the tariff. 

C Load control relay on/off status indicator. 
D The red lights flash according to consumption. 

Example image of Caruna's electricity meter:

Carunan sähkömittari

Disconnect electricity from the meter during an absence

If you want to ensure that all your electrical devices are switched off while you are away from home for an extended period, you can disconnect the electricity by pressing the meter’s 0 button. 

Do not disconnect electricity from the main switch of the apartment, as it will cut off the data connection of the electricity meter. If the connection is lost, we will not receive data from the meter about matters such as possible power cuts. When you disconnect the electricity by pressing the meter's 0 button, you will receive an invoice based on your up-to-date electricity consumption. 

The blue indicator light comes on if you disconnect the electricity. The data communication connection will continue to work even if you disconnect the electricity from the meter. The light turns off when you switch electricity on with the I button. In the interests of electrical safety, the electricity should be disconnected at the main switch on the property when electrical work is carried out.

Effect of electrical load control on the electricity meter

With electrical load control, an electrically operated storage heater, such as a water boiler or accumulating underfloor heating, is started from the electricity meter in a scheduled manner. 

In order to use load control, the electricity meter must have a relay, and it must be connected to the electrical devices you wish to control. It is a common misconception that the click of the relay in the meter indicates the start of night pricing for the electricity distribution product. Actually, it is the sound of electrical load control switching on. 

To find out which connection time group you are currently using, press the change button on the electricity meter until the screen shows "RELE". The number following the text indicates the group to which the connection time belongs. 

You can choose a suitable connection group from 1 to 5. The service is free of charge and does not affect the distribution product or pricing. 

View the electrical load control connection times  > 

Privacy of electricity consumption data

We collect electricity consumption data from meters in databases that are protected by firewalls, passwords and other technical means. Consumption data is transferred and encrypted automatically from the meter to our internal systems. The data can only be accessed by Caruna employees and partners who need it for their work. 

The consumption monitoring service and the backend systems have undergone an information security audit to ensure that each customer can only see their own consumption data. When you open Caruna's energy monitoring service, you are authenticated, and you can only view your consumption data for the accounting points where you currently have or have had an electricity network contract. If the point of delivery was previously owned by another person, you will not see the consumption data for that period. 

Hubs collect data on electricity usage

Remotely readable electricity meters send electricity consumption data via the electricity network to hubs, which forward the data using a mobile network connection (3G/GPRS) once a day. Thus, meters do not send data directly on the mobile network. Meters and hubs operate in accordance with set standards on frequencies intended for use by electricity network companies. Hubs are installed outdoors or in the basements of apartments so that we can service them freely.

Electricity meters do not interfere with other electrical devices

electricity meters and hubs comply with the EMC (electromagnetic compatibility) standard. Standard-compliant electrical devices must not be affected by or interfere with the operation of other devices electrically or electromagnetically. This means that an electricity meter does not interfere with, for example, a pacemaker.

The Radiation and Nuclear Safety Authority has published radiation data related to home appliances on its website (in Finnish), which also covers the electromagnetic radiation caused by remotely readable electricity meters. The Radiation and Nuclear Safety Authority has stated that remotely readable electricity meters are safe to use.