Linka Group consists of three companies that together are among the world’s leaders in biomass plants and smaller waste-based plants. We are specialists in the development and optimization of environmentally friendly forms of energy based on biofuel and waste.

In 2018, Linka Energy and Jernforsen merged and in 2019 Weiss joined the partnership as well. Together, we have one of the widest product ranges in the industry, and we offer biomass boiler systems for all professional purposes. Our technologies are “top-of-class” and guarantee an efficient combustion of different biomass fuels, such as straw, wood chips, wood pellets, wood waste, RDF and more.

With Linka Group, you get an energy partner who understands your needs and answers your technical questions.

Innovative technical development, optimisation and operational support of future energy plants.

Technical competence in dialogue

As specialists in energy installations, we are your energy partner, regardless of your own technical expertise. With our many years of international experience, you therefore get an optimised plant with full operational support.


As a supplier of the energy systems of the future, we ensure optimised operation.
Our technical know-how in energy development strengthens our competence as the energy partner that can provide you with optimal operational support for your plant.

A future-proof solution

When you choose Linka Group as your energy partner, you choose a future-proof solution. With technical know-how and an operational approach to installation and operational support, you get the most optimised energy system.

Linka Energy A/S

Since 1978, Linka Energy has built fully automated plants, thus helping to reduce large amounts of CO2 with our customers. More than 40 years of experience and know-how about biomass combustion make the company one of the world’s leading companies in the industry.

Linka Energy has delivered more than 3,500 fully automated plants worldwide to various customer groups such as agriculture, industry, institutions and heat plants. The plants are supplied in the form of hot water and hot water systems as well as steam systems. All plants are designed for maximum fuel utilization, high reliability and minimal maintenance costs.

Patented combustion system

The biofuel boilers, type LIN-KA H., are a cylindrical, powerful duct tube boiler in 3-pull design, intended for firing with biomass (straw, wood chips and wood pellets). The kettle has a smooth fire channel and water-cooled turning chambers. The boiler is designed to provide full combustion and efficient utilization of the radiant heat in the fire channel, while the convection heat is utilized as much as possible in the two subsequent flue pipe sections.

At the rear end of the boiler is placed a movable staircase, thereby avoiding slag formation. Air is supplied, via Linka’s world patented system, from the firing end in a co-flow principle. This causes the flue gas to be sucked up into the boiler and burned efficiently. This results in the best results on efficiency and emission figures. The combustion system has one of the highest efficiency in the EU and is up to 94.7%.

Jernforsen Energy AB

Jernforsen, a Swedish company, is one of Europe’s leading companies in the bioenergy industry. Since 1984, over 1,000 plants have been installed for satisfied customers around the world. With many years of experience in the industry, the company is an expert in developing and installing biomass incinerators. Particularly wet fuel is one of the company’s top competences. Fuels with up to 60% humidity can be used in a plant from Jernforsen.

The company employs approx. 30 employees, by service, sales, project management and administration. The competent service organization has extensive experience with inspection, service and technical support.

The primary customer groups are sawmills, heat plants and industry and all plants are adapted to the individual customer’s wishes and needs. Whatever energy system is needed, the system is built around the combustion equipment. The core of the combustion is the movable shaking system. The grids are controlled by a forward motion that brings the fuel forward as it burns.

Weiss ApS

Weiss is a Danish company headquartered in Hadsund. They specialize in providing service, spare parts, total solutions and energy optimizations at waste and biomass plants. For more than 92 years, the company has supplied more than 1,000 customized and CO2 neutral energy plants as well as smaller cogeneration plants. These plants are located throughout the World – the largest part, however, in northern Europe.

Weiss operates in the intersection between the provision of service / spare parts, the manufacture of larger plant components, consultancy and optimization of plants. With their know-how and many years of experience, well-tested, reliable and profitable solutions are delivered – regardless of wish and need.

Service tasks and projects are carried out with great expertise and many years of experience. All tasks are solved with the individual customer in focus. For Weiss, mutual cooperation with customers is the most important in all aspects.