Electricity for New Customers
At our electricity trading company Bixia, you can find information on how to get electricity and other important topics related to your electricity contract in several languages.
About Tekniska verken and Our Services
Here you will find information in English and other languages about who we are and what we do. We also offer international services such as technical visits, biogas expertise and regional energy solutions.
We make everyday life more sustainable
Tekniska verken helps people live sustainably without compromising on comfort. We also support businesses in using resources efficiently and profitably. Our services are based on making the most of resources that would otherwise go to waste – often in several steps. This has resulted in one of the world’s most resource-efficient energy systems.
By linking different parts of our business, we’re uniquely positioned to drive sustainable development. We build energy recovery plants, ensure clean drinking water, improve waste management, and more – all to reach our vision: to build the world’s most resource-efficient region.
Climate action that makes a difference
Our work is aligned with Sweden’s and the EU’s climate goals – but we aim higher. By turning waste into energy, producing biogas from food waste, and expanding renewable electricity, we help reduce global carbon emissions and increase the use of clean energy.
Three dimensions of sustainability
Our work is based on three principles:
- Social benefit – delivering essential services like energy, water, waste management and broadband.
- Environmental care – using resources wisely and protecting the climate.
- Financial responsibility – offering good value while securing funds to invest in the future.
About gröna påsen – the Green Bag
If you live in Linköping Municipality, you sort your food waste – like apple cores, coffee grounds and potato peels – in “gröna påsen”, the Green Bag. Here you can find information about Gröna påsen in different languages.
French
Triez vos déchets alimentaires avec le sac vert.
Arabic
تصنيفات مخلفات الطعام بأستخدام الكيس الأخظر
Farsi
جدا كردن ضايعات غداءى باآستفاده آز كيسهءى سبز
Kurdish
Services for the regional market
We provide essential services to 260,000 customers. Here you can learn more about our work and services.
For more information, please contact our custumer service
We handle all types of waste from households and businesses through recycling centres and customised solutions. Our facilities in Linköping (Gärstad, Ullstämma, Malmen) and Katrineholm (Vika) are popular and well-visited.
In Linköping, food waste is sorted into "gröna påsen", the Green Bag, collected with other waste and separated automatically at the sorting plant. The food waste is then turned into biogas and bio-fertiliser.
Waste is central to our energy system. At the Gärstad plant, sorted waste from over 30 municipalities is incinerated for energy recovery. This produces district heating, cooling and electricity, reducing carbon dioxide emissions.
Key facts:
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420,000 tonnes of waste incinerated per year
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Over 90% of Linköping’s homes use district heating
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We also supply Katrineholm, Borensberg, Kisa, Skärblacka, Åtvidaberg and Mjölby
We purify water from lakes and rivers to produce safe drinking water, and clean wastewater before it returns to nature. Around 2,000 km of pipes carry drinking water, wastewater and rainwater across Linköping.
Each resident uses about 200 litres of water daily, sourced from the River Stångån and Motala Ström, and treated at Råberga and Berggården water plants.
We are investing in increased capacity, better purification and advanced protection against bacteria and viruses. We also aim to build Sweden’s first full-scale plant capable of removing pharmaceutical residues from wastewater.
We manage the electrical grid in Linköping, parts of Mjölby and large parts of Katrineholm. We also operate most of the public lighting in Linköping and offer design, consulting and maintenance services.
We are actively switching to energy-efficient light sources and improving the reliability of both power and lighting infrastructure.
Our subsidiary Utsikt Bredband AB is a leading regional provider of fast and secure broadband for households, businesses, property owners and operators. Utsikt operates open-access fibre networks in Linköping, Katrineholm and Mjölby, offering open competition between internet, TV and phone providers.
Utsikt is jointly owned by Tekniska verken and Mjölby-Svartådalen Energi AB.
Through our ownership of Bixia, one of Sweden’s largest electricity trading companies, we focus on electricity from renewable sources. We also own several small hydropower plants and invest in wind power. Bixia has customers all over Sweden and supports small-scale producers of renewable electricity.
Our subsidiary Svensk Biogas develops biogas as a vehicle fuel. This includes building public filling stations and improving production methods and fuel quality.
We offer services in:
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Planning and construction
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Operation and maintenance
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Project management
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Emergency preparedness
Our expertise covers water, waste, district heating and cooling, electricity, urban networks, property services and energy efficiency.
Services for the international market
In less than 200 years, our use of the earth’s resources and emissions of greenhouse gases have increased sharply – mostly due to fossil fuels. The big challenge now is to build a resource-efficient society. We has accepted that challenge. As we move forward, we want to build strong partnerships with the world around us.
With many years of experience in waste incineration (Combined Heat and Power) and biogas production, we offer technical visits for companies and organizations that want to learn more about Waste-to-Energy.
Our expertise in complex energy systems gives you a unique opportunity to explore efficient solutions for waste management, power and heat generation, and the production of biogas as vehicle fuel.
These visits are aimed at businesses, politicians, and public officials with a strong interest in Waste-to-Energy and sustainable development.
We tailor each visit to your specific area of interest. When you contact us, please include a short description of your focus so we can involve the right experts and plan accordingly. We kindly ask you to submit your request about one month in advance. All technical visits are offered on a commercial basis.
Tekniska verken in Linköping is a leading player in Sweden’s biogas development. We were early to invest in R&D for biogas from waste and now have extensive experience in managing a wide range of organic residues.
Through in-house research and external projects, Tekniska verken R&D Biogas stays at the forefront of process development. We continuously improve gas yield from existing substrates.
Advanced lab testing and process simulation
We work with both internal and external projects. In our well-equipped lab, we run advanced experiments using patented, semi-continuous biogas reactors. We’ve developed reliable methods to measure biogas potential. Our accredited water lab (ISO/IEC 17025) in the same facility handles water and sludge analysis.
By testing changes at lab scale first, we reduce risks to full-scale operations.
How we can support your biogas project
We assist in every stage – from feedstock evaluation and lab trials to plant design, process monitoring, and optimisation. Our lab-scale simulations help test new ideas or changes before applying them in full scale.
Thanks to our experience and accredited lab support, we deliver results with strong real-world applicability.
We offer:
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Lab-scale simulation of new biogas processes
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Evaluation of new substrates or process changes
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Digestate quality analysis
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Full-scale process consulting and monitoring
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Chemical analysis: volatile fatty acids (VFA), nitrogen fractions, dry matter, volatile solids, pH, metals
Examples of projects:
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Greve Biogass AS – Start-up of a new biogas plant in Norway
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Rena Hav AB – Simulation of biogas production from fishery waste
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Västervik Biogas AB – Co-digestion of salt-rich substrate and primary sludge
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Linköping WWTP – Increased biogas production through co-digestion
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Swedish Biogas International AB – Process additives to boost gas yield
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Svensk Biogas i Linköping AB – Post-digestion at low mesophilic temperatures
For more information please contact
Erik Nordell
Product Manager for Biogas, Water and Wastewater
- Phone number: 013-30 85 42
- Email: erik.nordell@svenskbiogas.se
Jan Moestedt
Research and Development Engineer, Tekniska verken
- Phone number: 013-20 93 77
- Email: jan.moestedt@tekniskaverken.se
Sören Nilsson Påledal
Process Engineer, Technology and Systems, Tekniska verken
- Phone number: 013-20 93 87
- Email: soren.nilsson-paledal@tekniskaverken.se
Tekniska verken has developed a patented process additive that optimizes biogas production. It is used by several biogas plants across Europe and is marketed under the trademark Kemira BDP.
Benefits of the additive:
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Reduces hydrogen sulfide (H₂S) directly in the digester, minimizing odor and toxicity issues
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Provides essential trace elements and nutrients to support more efficient microorganisms and remove bottlenecks in the methanogenesis step
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Lowers ammonia toxicity by reducing pH levels in the reactors
These effects contribute to a more stable biogas process, allowing for a higher organic loading rate and increased biogas production.
The additive is exclusively licensed to Kemira Oyj, which manufactures and distributes the product throughout Europe.
For more information please contact
Erik Nordell
Product Manager for Biogas, Water and Wastewater
- Phone number: 013-30 85 42
- Email: erik.nordell@svenskbiogas.se
Jan Moestedt
Research and Development Engineer, Tekniska verken
- Phone number: 013-20 93 77
- Email: jan.moestedt@tekniskaverken.se
Sören Nilsson Påledal
Process Engineer, Technology and Systems, Tekniska verken
- Phone number: 013-20 93 87
- Email: soren.nilsson-paledal@tekniskaverken.se
An infraculvert is a shared underground space for all utility infrastructure. This prefabricated solution allows fast, efficient installation and provides a flexible setup that reduces future operation and maintenance costs. It’s a smart, sustainable option for both new developments and existing areas.
Why choose an infraculvert?
As cities grow and new urban areas are developed, infrastructure such as water, wastewater, heating, power, broadband, and waste systems becomes increasingly complex. Traditional methods often require digging up roads during construction or repairs – a costly process that disrupts traffic, the local community, and the environment.
The infraculvert gathers all pipes and cables – including electricity, fibre, district heating, wastewater, drinking water, and vacuum waste collection – in a large plastic culvert with a diameter of 3.5 metres. This provides:
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Better protection and inspection access
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Reduced need for future excavation
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Efficient use of space and resources
The culverts are manufactured and pre-assembled at Uponor Infra’s facility in Fristad, north of Borås, Sweden.
Key benefits
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Easier maintenance and upgrades – everything is accessible in one place
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Less disruption – fewer road closures and quicker emergency repairs
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Improved working environment for maintenance teams
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Adaptable to tough ground conditions – the system is waterproof
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More buildable land – frees up space above ground
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Cost-effective – enables development in areas that would otherwise be unprofitable
For more information please contact
Annette Nilsson
Affärsenhetschef Produkt & Distribution, Tekniska verken
- Telefon: 013-30 86 86
- Mejl: annette.nilsson@tekniskaverken.se
