District heating for your home
Carefree, affordable and environmentally friendly choice
Herrfors district heating brings reliable warmth to your home without unnecessary surprises. Enjoy everyday convenience while making an environmentally friendly choice.

Finland’s most satisfied customers
Overall rating for the district heating experience, scale 1–5
Herrfors’ District Heating Products
Herrfors district heating provides households and businesses with energy-efficient and environmentally friendly heating systems.
Renewable
Renewable energy sources
By choosing Renewable district heating, you contribute to sustainable development. We mainly produce heat from biofuels and also utilize other renewable energy sources.
- Low carbon footprint
- Locally produced energy
Traditional
Competitive price
Traditional district heating provides consistent warmth and sufficient hot water throughout the year. It is an easy and convenient option that ensures reliable heating without major maintenance costs.
- Fixed price, no surprises
- Easy maintenance and convenient use
Peak
Backup source with integration options
Herrfors Peak district heating is suitable for properties where district heating is not the primary heating source. It is mainly used during the winter months and as a backup heating source at other times of the year.
- Reliability for cold months
- Always sufficient heating and hot water
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District heating
Who is district heating suitable for?
District heating is a perfect fit for:
- Homes where a low-maintenance heating solution is a priority.
- Families who value the simplicity of heating and predictable costs.
- Environmentally conscious households seeking a responsible way to heat their home.
Benefits of District Heating
Switching to district heating brings many advantages, both for you and for the environment.
Reliability and Stability
Herrfors provides efficient and reliable district heating solutions designed to meet the needs of both households and businesses. District heating is a cost-effective and dependable choice that ensures an adaptable and comfortable temperature all year round.
Environmental Friendliness
District heating uses mostly renewable energy sources and is therefore an environmentally friendly option. It reduces carbon dioxide emissions and helps you lower your carbon footprint – a choice that supports sustainable development.
Easy Maintenance
District heating systems require very little maintenance, which keeps upkeep costs low.
Even Heat
District heating delivers an even and stable heat supply that adapts to the needs of your home or business. It is a flexible and reliable solution that guarantees a pleasant warm environment in every season.
What’s happening in Herrfors district heating
District Heating Production Methods
District heating is produced where it is used – as close to your home as possible. In Pietarsaari and Ylivieska, heat is generated efficiently in combined heat and power plants, where the focus is on renewable fuels and energy efficiency. These production methods ensure a reliable supply in all weather conditions.

Pietarsaari – Heat from Renewable Raw Materials
District heat in Pietarsaari is mainly produced at the Alholmens Kraft AK2 power plant, which is the world’s largest power plant using biofuels.
- Main fuels: bark, forest chips and milled peat
- AK2 boiler capacity: 550 MWth (CFB technology)
- Backup: AK1 power plant and Herrfors’ own heating plants

Ylivieska – Local Heat and Electricity from One Plant
In Ylivieska, heat is produced at Vieskan Voima, which operates as a combined heat and power (CHP) facility.
- Fuels: forest chips, sawdust, bark and milled peat
- During summer and for peak demand, heat is produced with a separate wood-fuelled boiler and electrical boilers
- On the coldest days and in the event of possible disturbances, oil-fired boilers ensure sufficient heat

Alavieska and Raudaskylä – Warm Energy Close to You
Herrfors also produces district heating in Alavieska and Raudaskylä, focusing on local and reliable heat production. In these areas, heat is produced efficiently and dependably – right where it is needed.
- Fuel: forest chips, with light fuel oil as a reserve
Customer Service Contact Information
Would you like to learn more about the benefits of district heating for your home or check the availability of a connection? We are happy to help with anything you need to know.
Customer Service
Opening hours: Mon–Fri 10 AM–3 PM
Fault reports
Opening hours: 24/7
Frequently Asked Questions
Here you can find answers to the most frequently asked questions about district heating and its production.
Herrfors has extensive and comprehensive district heating networks in Pietarsaari and Ylivieska. There are also production plants and district heating networks in Alavieska and Raudaskylä in Ylivieska. Among Pietarsaari’s 950 and Ylivieska’s 760 customers are not only apartments and single-family homes, but also housing cooperatives, commercial and industrial properties, and public buildings.