Our services for small-scale generators of electricitry

You can monitor your electricity consumption and the volume of surplus electricity generated in Caruna+ once you have received a connection permit for your generating equipment. The electricity produced and consumed are measured through the same electric meter in hourly measurement periods and are netted, i.e. added together for the same hour, when the power of the generating equipment does not exceed 100 kW.

Electricity monitoring on Caruna+

After commissioning the generating equipment, you can view in Caruna+ the data recorded by the electric meter, i.e. the amount of electricity transferred from the network to the property and the amount of surplus production transferred from the property to the network.

Caruna's records do not include anything that happens in your property before the electric meter. These include information on the amount of production and the amount of consumption of self-generated electricity in the property.

The following is a more detailed explanation of what the data in Caruna+ means and how you can monitor your gross production and consumption in your property.

Data to be monitored in Caruna+

Total distribution is the amount of electricity distributed from Caruna's distribution network to you. This is the amount of electricity you have used in your property in addition to the electricity produced by your solar panels.

Surplus production is the amount of electricity you produce and do not consume in your property. This electricity is transferred into Caruna's distribution network in full. It is the sum of the production eligible for sale and reimbursement.

Production eligible for reimbursement is the proportion of surplus production that is reimbursed from the total distribution distributed during an hour through netting. Production eligible for reimbursement does not mean the amount of electricity produced that you have used on the property.

Production to be sold is the amount of electricity that you produce and that is left over after hourly netting. In other words, it is the amount remaining after the production eligible for reimbursement. Your electricity supplier will pay you for the share of production to be sold on the basis of your agreement.

Billable consumption is the amount of electricity that you pay for in your electricity bill. We calculate your billable consumption by subtracting the production eligible for reimbursement from your total distribution.

Things happening before the electric meter that cannot be monitored in Caruna+

You can monitor the total amount of electricity your solar panels produce by checking the screen on the inverter or by accessing the supplier's service.

The amount of production used in the property reduces the total distribution transmitted to the property in the same proportion. The main benefit of generating equipment on your electricity bill comes from the fact that you get some of the electricity you need for your property through the panels, rather than it being transmitted to you from the electricity network.

Utilising load control

Caruna has a load control service for its customers through the electric meter, which allows you to schedule, for example, the operation of electrically operated storage heaters, such as a water boiler. 

Solar power producers can use the load control service to select switch groups to switch on devices during the day during the sunniest hours. This allows a greater proportion of own production to be used for own consumption.

You can deploy the load control service in Caruna+.

Read more about load control

Netting of small-scale generation, generating equipment up to 100 kW

The electricity produced by solar panels is primarily consumed on your property. You also need electricity from Caruna's distribution network in addition to the electricity produced by your panels.

We measure the consumption and production of your point of delivery using the same electric meter. The metering period is one hour, during which the production generated by your panels and the electrical energy you consume are netted, meaning that they are calculated together for the same hour. 

  • If the panels produce more electricity than you consume in the property in the same hour, the electricity supplier will compensate you for the remainder of the electricity sold after netting.
  • If you consume in the property more than the panels generate in the same hour, you will pay for the difference between consumption and generation for the hour in question.

All of Caruna's small-scale producers are covered by automatic netting. In addition to hourly netting, Caruna's electric meters momentarily balance small-scale electricity generation and consumption between phases. Without hourly netting, it would be possible to accrue both consumption and surplus generation in the same hour if these do not occur at the same moment in time.

Caruna's distribution invoice shows you the amount of consumption to be invoiced after netting. The netted surplus production (production eligible for reimbursement) has, in other words, already been deducted from the amount of electricity distributed from Caruna's distribution network to the small-scale generator in the same hour.

The electricity consumption on your property may vary momentarily between the following alternatives, depending on how much electricity is consumed on your property and how much your solar panels produce. 

The images describe three possible metering and netting situations for a small-scale producer in one-hour metering periods.

Example from noon to 1 pm
Example from noon to 1 pm
Example from 1 pm to 2 pm
Example from 1 pm to 2 pm
Example from 2 pm to 3 pm
Example from 2 pm to 3 pm


The electricity I generate does not show up in monitoring. Why?

Monitoring surplus generation on Caruna+ requires an agreement on the purchase of surplus electricity with a supplier.

Caruna's meter only measures the surplus generation transmitted to the electricity network. If you have consumed all the electricity generated by the solar panels in the property during an hour, the monitoring will not show the generation data because there is no surplus generation. 

Measurement errors are extremely rare.