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On Friday, September 26, our customer service will exceptionally be open from 12:30 p.m. to 3:00 p.m.

Solar panels

Connecting a solar power system to the Herrfors Nät-Verkko distribution network

What is a solar power system?

A solar power system generates electricity directly from sunlight and provides an ecological way to produce your own energy.

Benefits of solar power

Economic savings

A solar power system reduces the need to buy electricity and can provide income from selling surplus electricity.

Ecological

Reduces your carbon footprint and supports sustainable development.

Long lifespan and low maintenance

The system lasts up to 25–30 years and requires little maintenance.

Connection process


  1. Preliminary study


    Contact us before purchasing the system. We will work with you to determine whether the system can be connected to the grid. Connectivity depends on your connection size, the strength of the grid, and the size of the main fuse. For a three-phase connection, the system must be connected three-phase.


  2. Submission of general information form


    Fill in the electronic general information form to notify us of the production equipment. The form can be completed by the customer or an authorised contractor.


  3. Purchase agreement


    We will notify you when the production site has been created for the system. You can then make an agreement to sell the surplus electricity you produce.


  4. Network works and connection permit


    Connecting the production equipment to the network may require changes to the electricity grid or a meter replacement. We will handle the necessary changes.
    The connection may only be made with written permission from the distribution network company.

What should you do as a customer?

  • Contact us before ordering the system.
  • Choose a qualified and certified electrical contractor.
  • Complete the necessary form and ensure agreements are in place.

Vanliga frågor

How long does it take to connect the system to the grid?

The process usually takes from a few days to a few weeks after the form has been submitted and the commissioning inspection completed.
Can I sell surplus electricity back to the grid? 

Yes. You can obtain more information about the purchase agreement from us.
What should I do if there are problems with the system?

Contact the contractor who installed the system.

Need help connecting your solar power system to the electricity grid?

Our expert technical customer service is ready to help you with all connection-related questions – whether it’s about documentation, schedules, or technical requirements.

Contact us easily using the form below.
We will respond as soon as possible and guide you step by step.

Fill out the contact form