We have been awarded the Green RKI Diploma by Experian
We have been awarded the Green RKI Diploma by Experian
when a shared, dedicated effort pays off
We are proud to have been awarded the Green RKI Diploma from Experian, because for us it is more than just a diploma on the wall. It is recognition of the development we have gone through as a company and proof that responsible operations, financial stability, and long-term thinking deliver results.
What is the Green RKI Diploma?
The Green RKI Diploma is awarded by Experian to companies that demonstrate a particularly high level of financial responsibility and stability. The diploma serves as a quality seal, showing customers, suppliers, and business partners that the company has its finances under control and meets a range of strict requirements.
Only a small proportion of Danish companies achieve this recognition. In fact, fewer than 4% of all Danish companies qualify for the Green RKI Diploma. We are therefore both proud and humbled to be among the companies that meet these requirements.
A journey marked by hard work and dedication
Times have not always been easy. Like many other companies, we have experienced periods of challenges and adversity. But through integrity, hard work, and a shared dedication to being the best possible partner for our customers and collaborators, we have managed to build a strong foundation for the future.
Throughout, we have focused on delivering quality, keeping our commitments, and building long-term relationships based on trust. These are values that continue to form the foundation of the way we run our business.
Recognition of a shared effort
The Green RKI Diploma is not only the result of sound financial decisions. It is also the result of the effort our employees put into their work every day, and the trust our customers and business partners place in us.
We would therefore like to extend a heartfelt thank you to everyone who has been part of our journey. This recognition is just as much yours as it is ours.
Looking ahead
Although we are proud to receive the Green RKI Diploma, we primarily see it as motivation to continue our positive development. We will remain focused on creating value for our customers, being a trustworthy partner, and running a business built on responsibility, integrity, and quality.
Thank you for your trust – we look forward to continuing the journey of growth together.

FJV Landsmødet 2025
Energy in Transition
Meet Weiss & Linka at FJV Landsmødet 2025
The district heating sector is undergoing major changes – and this year’s theme, “Energy in Transformation”, perfectly reflects our joint mission at Weiss: delivering reliable, flexible, and sustainable solutions to prepare heat supply for the future.
Together with Linka, we will be participating in Dansk Fjernvarme’s Annual Meeting 2025 2025 in Odense, October 30–31.
At our stand, you can learn more about:
- Large straw boilers that provide stable and future-proof heat
- Wood chip boilers and flue gas cleaning that comply with the latest emission requirements
- Multi-fuel boilers that ensure fuel flexibility and freedom
👉 Visit us at stand SA-4 in the Green Area — let’s talk about how Weiss and Linka can help your district heating plant take the next step in the green transition.
We look forward to inspiring discussions, new ideas, and showing how together we can shape the energy solutions of tomorrow.
Weiss ApS is now ISO 9001 certified
Weiss ApS is now ISO 9001 certified
With this ISO 9001 certification, Weiss ApS is qualified to perform major inspections of safety and control equipment for steam, hot water, and thermal oil boilers.
Inspection:
- Inspection of the safety circuit on the system.
- Inspection of other safety systems
(safety valve, etc.). - Inspection and, if necessary, adjustment of instrumentation.
- Inspection and, if necessary, adjustment of AMS equipment.
- It can be expanded to cover the entire system.
Benefits:
- Increased safety.
- Documentation that can be presented to the relevant authority.
- Continuous registration and history of the safety system.
- The supplier is more closely connected to your specific system.
Contact our BackOffice for further information about our service concepts:
Monday – Thursday 8:00 – 16:00
Friday 8:00 – 15:00
Phone: +45 96 52 04 44
E-mail: service@weiss2energy.eu
Outside normal opening hours, weekends and holidays:
On-call phone: +45 30 98 35 60

Weiss ApS rebuilds a chip plant for a customer in the wood industry
Weiss ApS rebuilds a chip plant for a customer in the wood industry
The challenge:
The customer has a Linka boiler to heat the factory by burning wood chips from production. The customer’s chip silo is too small and its cone-shaped bottom is unsuitable for sawdust/shavings because the material bridges inside and cannot be fed out. In the summer, surplus chips are transported away in containers. In winter, it struggles to produce enough wood chips to heat the factory.
The solution:
It is decided to connect the boiler to the city’s district heating system so that heat can be exchanged both ways. Weiss ApS. Installing a new and larger silo, with a flat bottom and a Weiss NFU 600 outfeeder. In addition, a solution is designed for filling wood pellets during periods when not enough wood chips are produced for firing. Throughout the conversion phase, the customer borrows a mobile 3 MW oil boiler from Weiss. This is connected to the heating system until the district heating is connected.
Now:
The facility after reconstruction: The existing chain conveyor is now used, along with a new unloading station, to fill with wood pellets in the winter. The chip silo has double the capacity compared to before. With the new Weiss outfeeder, there are no longer any problems getting the material out of the silo and into the boiler. In the summer, surplus heat is fed into the local district heating network.

Valued employee returns to Weiss
Valued employee returns to Weiss

After 5 months at Middelfart Fjernvarme, the loss of Weiss became too much for Ronni Andreasen.
We are therefore pleased to announce that Ronni, a highly valued employee, has returned to Weiss ApS.
Both the employees and management at Weiss are thrilled to have Ronni back.
Welcome back, Ronni!
Weiss back in Scotland
Weiss back in Scotland
We have been working for the NHS at Raigmore Hospital in Inverness for the past few years, where we have installed two 1.6 MW biomass pellet boilers that produce steam for the hospital’s laundry/cleaning facilities.
Our Service Engineer is currently there to provide support and training to their operating staff.
Production is in full swing at Weiss ApS
Production is in full swing at Weiss ApS
We are currently working on the production of a pusher piston for a Weiss wood chip pusher, which will be delivered and installed at Ølgod Varmeforsyning.

Customer on Bornholm gets new Weiss infeed system
Customer on Bornholm gets new Weiss infeed system
We are in the process of replacing the feed system on a wood chip fired non Weiss boiler for a customer on Bornholm.
Tasks consist of delivering, installing and commissioning a complete new Weiss system, consisting of:
- New double receiving hopper.
- New dosing tank with fire damper.
- New hydraulic pusher.
- New water-cooled duct.
Start-up of the system is scheduled for early November 2022.

First fire
First fire
Weiss is now finishing updating an older steam boiler with original retort principle at a customer on Funen.
It has been a major upgrade project where we have installed:
- A new complete Weiss stoker w/cell sluice.
- A new Weiss 1000 KW push grate for wood pellets w/hydraulic station.
- A transition section from grate to boiler.
- A new option for better air control, new primary/secondary fans.
- New ash augers.
The parts have been produced in Linkas Produktion in Lem, based on Weiss technology and know-how.
There was a First Fire on Wednesday, September 29th and now a little trimming and test drive is needed. It is really well done by all involved.

Custom designed ECO tops for Norway
Custom designed ECO tops for Norway
The 2 specially designed ECO tops with built-in gunshot cleaner are ready for shipment to Norway.
The customer wanted a more innovative solution that minimizes the risk of leaks and makes ongoing maintenance easier and more time-saving.
We at Weiss look forward to the customer getting this solution installed and tested and look forward to further deliveries of this innovative design/solution.








