About Solrød Biogas2016-12-14T10:50:46+00:00


Waste, environment, climate, energy. Danish local authorities face a wide range of complex challenges. The set-up of Solrød Biogas represents an initiative aimed at neutralising several of them, while also offering a range of environmental benefits in both the short and the long term.

Solrød Biogas will lessen the problems of odour nuisances at the beach caused by seaweed and algae by removing the material and using it for biogas production. When we remove the seaweed, Køge Bay will be less impacted by nutrients, today a significant problem for the aquatic environment. We will reduce marine pollution.

Also, the facility reduces the use of fossil energy for electricity and heat production. It will cut down greenhouse gas volumes, in this way contributing to solving the climate problem. Residual products can be used for fertiliser on farms to replace artificial fertiliser, typically produced by means of fossil fuels.

In this way, Solrød Biogas contributes to achieving Solrød Local Authority’s ambitious goal of reducing the local authority’s greenhouse gas emission by 55% before 2025.


Profile presentation of Solrød Biogas A/S

The film theme is “from algal sludge to energy”, based on the concept which started it all and the considerations, reasons and visions leading to the gas flame being lighted over the facility in Solrød. So focus rests on the background, while the perspectives rest on the successful public-private partnership and the profile of Solrød Local Authority as a responsible and ambitious player in the climate field.

When so many partners team up, it becomes difficult to produce a short film, normally the most frequent format used on online platforms. However, this film meets the psychological aims by emphasising and involving the partners of the biogas project, who have enabled the vision on establishing a biogas facility to come through.

From idea to reality

December 2016

Solrodbiogas.dk in the air

15. December 2016|

A new Solrød Biogas website will give a better outline of the biogas project of the Municipality of Solrød for citizens, businesses, and other stakeholders.

After much preparation we can now present our new website. We look forward to presenting our interesting activities and keeping you updated on recent developments in our biogas project.

September 2016

CP Kelco and Solrød Local Authority continue their partnership

15. September 2016|


”CP Kelco and Solrød Local Authority continue the public-private partnership aimed at establishing a biogas facility. Solrød Local Authority is one of the local authorities with the most ambitious goals for the environment and climate, as it looks to reduce its CO2 emission by 50% before 2025. The set-up of a biogas facility is a key step towards fulfilling its goal.”

BIGADAN as the turnkey contractor

15. September 2016|


”An agreement was concluded with Bigadan A/S, granting the company the turnkey contract for establishing the facility and operating it for the first five years of its lifetime. Solrød Biogas A/S was set up in close cooperation with CPKelco, VEKS, Chr. Hansen, Bigadan A/S and the agricultural sector. The project receives project assistance from the EU, Region Zealand and Growth Forum Zealand.”

Visit by MEP Jeppe Kofod

15. September 2016|


MEP Jeppe Kofod visited Solrød Biogas to hear more about the experience which Solrød Local Authority and the private partners have accumulated from the unique facility. Jeppe Kofod expressed great enthusiasm of the project and took a wealth of interesting ideas and experience back to Brussels from the visit.

Visit by former MP Rasmus Helveg Pedersen

15. September 2016|


Former Minister for Climate and Energy, Rasmus Helveg Pedersen, visited the building site for Solrød Biogas A/S and described it as an impressive project. ”I find it interesting that you want to merge so many sources. And really ground-breaking that the agricultural sector and industry join a local authority in solving such a task”, the Minister said when chairman of Solrød Biogas, mayor Niels Hörup, had explained the project.

November 2015

Biogas in Solrød is a quadruple egg of Columbus

23. November 2015|

A strong signal from local forces in Solrød who have united in order to establish a unique biogas plant. These were the words from a minister at the opening of the plant.

Both the European Commission and the Danish Government gave much praise when Solrød Biogas A/S was officially inaugurated on Monday morning. On an annual basis the plant will produce approximately ten million m3 of biogas on the basis of local raw materials such as livestock manure from agriculture, seaweed from the beach and residues from the industry. The technology with a unique composition of residues converted into energy may become an international role model.

It took three pairs of scissors before the red ribbon to the plant was cut on Monday morning. Together with Niels Hörup, Mayor of Solrød, and chairman of Biogas Solrød A/S, Lars Christian Lilleholt, Minister for Energy, Utilities and climate, and Vincent Berrutto from the European Commission cut the ribbon.

The parent of all Columbus eggs

Lars Christian Lilleholt described the plant as a ground-breaking contribution to the renewal of sustainable energy.

– The enthusiastic minister said that it is at least a quadruple egg of Columbus – and almost the parent of all eggs of Columbus. You displace fossil fuels. You use waste products from agriculture, industry and beaches. You create a better distribution of nutrients to agricultural land. And you help removing foul-smelling seaweed from the beach.

Lars Christian Lilleholt said that it gives a strong signal that when Solrød wishes clean energy, then local forces unite to build a plant. Just as in the past where local communities wishing to have clean drinking water united and built waterworks.

The Minister welcomed the fact that it is a green conversion which is locally based and which uses local forces and local raw materials. That this facility can make use of seaweed is quite unique. He called the project a good contribution to the development of new biogas solutions that can inspire others, not least in coastal areas in Denmark and the rest of the European Union. The inauguration was also symbolically marked by the very first load of seaweed being driven to the receiving tank at the plant.

All of Europe can learn from you

Even Vincent Berrutto from the European Commission believes that the biogas plant in Solrød can inspire other local communities in Europe. It is one of 95 projects with sustainable energy that the Commission has backed in the last five years, and Solrød will be used as a successful example of how subsidies actually can realize additional capital investment within the climate and energy area.

– Let us help one another in telling the rest of the European Union about your unique project where it is possible to create competitive green energy. It is an example which all of Europe can use and learn from. You have shown political vision and leadership in a project that matches the European Union’s target to use renewable fuels instead of fulfilling half of the energy consumption by importing fossil fuels – as we do today. This is a strong contribution to the fight against climate changes and to achieve a more green energy future, Vincent Berrutto said.

Recouped in ten years

In his speech Niels Hörup emphasized that Solrød not only sets ambitious targets – Solrød also realizes them. When the plant is fully operational in one month, it will each year produce approximately ten million m3 of biogas. Solrød Municipality has a climate target to reduce emissions of CO2 with 55 percent before the year 2025. The biogas plant alone achieves half of this target.

Environmentally it is therefore a good investment, but economically it also holds, Niels found Hörup noted. The revenue from the sale of gas, etc. means that the plant will pay for itself in ten years.


  • Biogas is a flammable mixture of gases primarily consisting of methane and carbon dioxide which it is possible to convert it into energy.
  • The extraction of biogas is done through a biological process in which organic material is converted into biogas in an anaerobic environment.
  • The biomass consists of biological residues from the companies CP Kelco and Chr. Hansen, seaweed and fouling algae from beach cleaning in the Bay of Køge and livestock manure from nearby agriculture. The biogas production is estimated to constitute approximately 6 million m3 of methane annually.

The biogas is sent to VEKS Heat Transmission Company at Solrød District Heating Company by which approximately 23 GWh electricity is produced annually, corresponding to consumption of electricity in approximately 4,500 homes as well as 28 GWh heating, corresponding to heat consumption in 1,530 homes.

2015 November: A quadruple egg of Columbus

15. November 2015|


The European Commission joined the Danish Government in applauding Solrød Biogas A/S at the official inauguration. Lars Christian Lilleholt, Minister for Energy, Utilities and Climate, Vincent Berrutto of the European Commission and Niels Hörup, mayor of Solrød Local Authority and chairman of Solrød Biogas A/S, all participated in the ribbon-cutting ceremony. Mr. Lilleholt described the facility as something like a quadruple egg of Columbus.

September 2015

2015, autumn: Doors open day for citizens

1. September 2015|


The new asphalt had barely cooled when several hundred interested citizens and guests lined up for the doors open day at Solrød Biogas A/S. Guided tours had been organised to explain about the concept of the facility and its processes and to show them how biogas is produced.

August 2015

2015, late summer: VEKS to buy gas from Solrød Biogas

30. August 2015|


Annually, Solrød Biogas will produce six million cubic metres of gas which will be transmitted to VEKS for firing in a gas engine at the premises of Solrød District Heating. Via a gas generator, the gas engine will generate electricity, while the cooling water will be converted into district heating for VEKS’ system.

2015, August: Launch of Solrød Biogas A/S

1. August 2015|


Solrød Biogas receives the first load of cattle manure from farmers and eluate from Chr. Hansen. Later, co-substrate will be added. Cattle manure and co-substrate work as starter ingredients to get the bacteriological process going at the biogas facility. Subsequently, the gas production will start.

February 2015

2015: Topping-out ceremony

1. February 2015|


The topping-out ceremony marks a well-completed building stage which set up the framework of the unloading hall. Mayor Niels Hörup, who is also the chairman of Solrød Biogas, used the topping-out ceremony to thank craftsmen and turnkey contractor Bigadan A/S

January 2015

2015: Phase 3 – Construction starts

15. January 2015|


The construction stage of the facility starts after cutting the first sod. The plan envisions the facility to be constructed and ready for operation by late summer of 2015.

December 2014

2014: 12-year agreement with Bregentved Manor

15. December 2014|


Solrød Biogas concludes an agreement with Zealand’s biggest estate – Bregentved Manor – on annually supplies of 80,000 tonnes of degassed biomass. The agreement between Bregentved and Solrød Biogas is a key precondition for the biogas facility operation, as Bregentved will buy more than 40% of the annual volume of degassed biogas from the facility.

September 2014

2014: Cutting the first sod

17. September 2014|


More than 80 experts, technicians and partners turned up on a warm September day to witness mayor Niels Hörup’s cutting the first sod at Solrød Biogas A/S. The ceremony marked a milestone after years of intensive planning.

June 2014

Solrød Biogas leads the way to green growth

20. June 2014|

– unique cooperation between the industrial, agricultural and energy sectors

Solrød biogas plant is established in close cooperation with CP Kelco, VEKS, Chr. Hansen, Bigadan A/S and the agricultural sector. It is a powerful and convincing example of public-private cooperation. The parties have agreed to establish a biogas plant, which they all consider of great potential. Particularly, this close cooperation between the parties is key to the realisation of the Solrød biogas project and to meeting the requirements in order to obtain project subsidies from players such at the EU, Region Zealand and Growth Forum Zealand. Also, the coming together of numerous skills has been pivotal to the success of the project, and Roskilde University in particular has provided essential input to the project development. 

“The success of the project is greatly based on this interesting public-private cooperation between the municipality, suppliers, outlets, and research institutions. At the same time, the project has attracted people with various kinds of expertise which are essential in order to manage a project of this nature”, explains Niels Hörup.

Subsequent to the recent establishing of Solrød Biogas A/S, in which Solrød Municipality is the sole shareholder and Mayor Niels Hörup is the Chairman of the Board, the next step was to secure the agreements.

After a long process of ongoing negotiations, Solrød Biogas A/S has entered into agreements with business partners. A contract has been signed with Bigadan A/S, which has the turnkey contract and the operation responsibility for the first five years of production. Additionally, contracts have been signed with suppliers of by-products, CP Kelco and Chr. Hansen, which will supply pectin and carrageenan residue and eluate for the biogas plant respectively. Moreover, agreements have been reached with VEKS, which is to buy the biogas and convert it into power and heat for the users in and around the capital of Denmark. Solrød Biogas A/S has also signed agreements with local farmers, including Taagemarksgaard, Maglegaarden, Niemanns Maskinstation and Bjeragergaard & Nygaard I/S, who will supply slurry and take degassed biomass from the biogas plant.

 Chairman of the Board, Niels Hörup, states:

“It all started with an odour problem due to seaweed fouling the beach. Inspired by the traditional use of seaweed in agriculture, we began considering seaweed a resource. A couple of experts believed the seaweed to have gas potential. Subsequently, the project took off and we realised that by cooperating with the industry we were able to contribute to increasing the reutilisation and to generate a gas product which – to companies such as VEKS – can be converted into a major power and heat potential.”

The biogas plant is key in order to meet the ambitious 2025 climate objectives of Solrød Municipality, and with the board signing the agreements and initiating the final construction phase, a considerable step has been taken towards realising the biogas plant and thus the realisation of the municipality’s climate objectives.

Niels Hörup continues:

“Now the climate efforts of the municipality are really taking off. The municipality has set an objective of reducing the municipal greenhouse gas emission by 50 % by 2025. The biogas plant is expected to provide more than half of this reduction.”

It is expected that the final project phase will be completed in the late summer of 2015, and then the plant will be ready to supply gas for green power and heat.

Further information can be obtained at www.solrodbiogas.dk or by contacting Chairman of the Board Niels Hörup at +45 5618 2001 or acting Managing Director Jens Bach at +45 5618 2310.   

May 2014

2014 – Solrød Biogas A/S is incorporated

28. May 2014|


Solrød Biogas A/S is incorporated with Solrød Local Authority as the sole shareholder. The company’s object is to operate a biogas facility focusing on energy production for public heat supply by using raw materials, a facility supporting the fulfilment of goals for climate, environment and waste disposal.

Large EU subsidy to biogas plant

1. May 2014|

The Municipality of Solrød has entered an agreement with the EU about a large subsidy to Solrød Biogas Plant.

After many months of intense negotiation, the Municipality of Solrød has entered an agreement with the EU about a subsidy of DKK 3,600,000 for the implementation of Solrød Biogas Plant. The subsidy is granted under the EU initiative of “Mobilising Local Energy Investments”, which intends to assist public authorities (local and regional level) in preparing and implementing investments in sustainable energy projects.

Therefore, the subsidy is not granted to the construction of the biogas plant, but is associated with the consultancy services needed for the project in the preliminary work prior to the establishment of the biogas plant; in other words, for the preparation of tender documents, economic and legal consultancy, etc.

The entire EU agreement has a duration of two years after which a turnkey contractor will be selected to be in charge of the construction of the biogas plant.

Mayor Hörup says:“It started with an odour problem due to seaweed fouling on the beach after having been washed ashore in the Bay of Køge.Inspired, among others, from many years of use of seaweed in agriculture, some wise men believed that the collected seaweed should be used in a meaningful way.We grasped the idea and with the EUsubsidy today we are well on the way of realising a biogas plant that uses, among other inputs, the collected seaweed from the Bay of Køge for the generation of green energy.It will be the first of its kind in Denmark”

The biogas plant plays an important role in meeting the ambitious municipal climate objectives in 2025, and with the City Council’s approval of the cooperation with the EU we have taken a significant step towards the realisation of the biogas plant and thereby also the compliance with the municipal climate objectives.

“In addition to being a concrete payment under the project we see the EU support to the biogas project as an approval of the municipal efforts in the fields of climate and environment”, says Hörup. He continues:

Now the climate efforts of the Municipality are really taking off. The Municipality has set an objective of reducing the municipal greenhouse gas emissions by 50% in 2025.Of this amount, the biogas plant is believed to contribute with more than half of this reduction.With the EU subsidy we now really have the opportunity to meet our very ambitious climate objectives”.

The biogas plant is established in close cooperation with CP Kelco, VEKS (a local heat transmission company), agriculture, and the Beach Cleaning Association of Solrød. This cooperation is a fine example of a public-private cooperation since a common objective has been set regarding the establishment of a biogas plant due to the fact that all parties see major benefits from the project. This strong cooperation plays a vital role in the implementation of the project and in the creation of the necessary basis for entering the agreement with the EU. Also, the coming together of many competences has been a decisive factor for the success of the project; particularly the University of Roskilde has produced many significant inputs in the development of the project.

The success of the project is very much based on this interesting private-public cooperation between the Municipality, suppliers, and outlets.Also, in the project many competences come together that are needed to operate a project of such a nature.Here, particularly the University of Roskilde has played a significant role for the project development”, Mayor Hörup explains, and he continues:

The local administrations in the Municipalities of Køge and Greve have also followed the project from the outset, and I really hope that both municipalities will look positively upon a future co-ownership”.

The biogas project has also received support from Region Zealand and Growth Forum Zealand in the preliminary project phases, and this has been a strong contributory factor for taking the project where it stands today.

January 2014

2014: Phase 2 – One step closer to realising the facility

1. January 2014|


An application was submitted for assistance to establishing the facility on the basis of the selected construction concept, supply system and location. The phase selected methods, equipment and equipment supplier, prepared a detailed description for authority processing, and set up a time and action plan for implementation. Further, the phase included the preparation of a business and finance plan and a prospectus.

January 2012

Environmental authorisation granted

30. January 2012|


In connection with the implementation of Solrød Local Authority’s Heat Plan and the 2010-2025 Climate Plan for Solrød Local Authority, the possibility will be investigated of establishing a biogas facility based on residual products from CPKelco and Chr. Hansen, seaweed from beach cleaning in Køge Bay and animal manure from the agricultural sector. On this background, the Technical and Environmental Administration of Solrød Local Authority has applied for environmental authorisation for the Solrød Biogas Facility. The Ministry of the Environment granted the environmental authorisation.

2012: Phase 1 – preliminary survey

1. January 2012|


Preliminary survey including raw materials mapping, chemical composition analysis and value of biogas production as well as an assessment of methods to collect seaweed, location of facility and technical and financial assessments.

June 2011

CP Kelco and the Municipality of Solrød cooperation

17. June 2011|

CP Kelco and the Municipality of Solrød continue the public-private cooperation in view of establishing a biogas plant, which is one of the first of its kind in Denmark. The event was celebrated on 15 June 2011 when the cooperation agreement was signed.

The company CP Kelco ApS in Køge and the Municipality of Solrød now enter a closer cooperation on the establishment of a biogas plant based on seaweed from the Bay of Køge and by-products from CP Kelco. This is one of the results of a feasibility study on the biogas plant, which was published in December 2010; the feasibility study is supported by Growth Forum Zealand; the Universities of Roskilde, Århus, and Copenhagen; Green Centre; Rambøll; the Beach Cleaning Association of Solrød; CP Kelco; and the Municipality of Solrød.

CP Kelco is the world’s largest manufacturer of pectin and carrageenan, both of which are natural vegetable ingredients used, among others, for the improvement of the texture of food and in pharmaceutical products. Pectin is manufactured from dry citrus fruit peels imported from South America and the Middle East where the fruits are first used for juice production. The dry peels are then sent to CP Kelco where pectin is extracted from the peels. Carrageenan is extracted from a special type of seaweed originating from Indonesia, in the sea east of Africa and off Chile. CP Kelco receives thousands of tonnes of raw materials every year for the manufacture of pectin and carrageenan; in the production large quantities of by-products are generated.

With its 21,000 inhabitants the Municipality of Solrød is one of the smallest municipalities of Denmark, but with one of the most ambitious objectives for environment and climate. The Municipality has adopted an objective of reducing its CO2 emissions by 50% before 2025; the establishment of a biogas plant together with CP Kelco will be an important step in attaining this objective. Also, the removal of seaweed will contribute by 70 – 100% to meeting the requirements for reduction of nitrogen and phosphorous in the entire Bay of Køge area in the future national aquatic environment plan.

This cooperation is a very fine example of a public-private cooperation. A common objective has been set regarding the establishment of a biogas plant due to the fact that both parties see major benefits from the project. CP Kelco gets an outlet for its by-products in an economic and environmentally benign manner. The Municipality of Solrød gets a durable solution of the seaweed problems on the Beach of Solrød, and on top of this the bathing water quality will be better and the municipal greenhouse gas emissions will be drastically reduced..

Mayor Hörup comments on the project: “CP Kelco is a visionary environmentally aware company with much know-how and intention to take the lead together with the Municipality of Solrød in grasping a clear opportunity to develop a unique climate and environmental project with major economic benefits. This is full of promise for the future”.

“We have created the basis of a project with high probability of coming into being in cooperation between knowledge centres, municipal players, and industry. A project of such category may very well be difficult to implement without this very interesting private-public cooperation”, says Plant Director Stryger.

January 2011

Million grant from the EU

1. January 2011|


Solrød Local Authority concludes agreement with the EU on financial contribution of DKK 3,600,000 to realise the Solrød Biogas project. The agreement is key to fulfilment of the local authority’s ambitious climate goals by 2025.

January 2008

2008: From seaweed to energy

15. January 2008|

In part, the idea of constructing a biogas facility arose from the nuisance to the local residents of Køge Bay caused by the odour of decomposing seaweed. In connection with Solrød Local Authority’s ambition of promoting the green transition in the local area, the idea arose of constructing a biogas facility that could utilise the washed-up seaweed, organic residual products and animal manure to produce green energy.

Board of Directors

Niels Hörup


Mayor of Solrød Local Authority (Liberal Party)

Kaj Holm


Marine engineer with more than 30 years’ experience in the energy and heat sector. As well as handling the daily management of Solrød Biogas A/S, Mr Holm is operations manager of Solrød District Heating

Hans Odder

Board member

Solrød local council (Conservative Party)

Claus Madsen

Board member

2nd deputy mayor of Solrød Local Authority (Social Democrats)

Per Hauge

Board member

Solrød Local Authority (Danish People’s Party)

Eilif Nørgaard

Board member

Solrød Local Authority (Homeowners’ Party)



Decision on non-EIA duty - change and development of Solrød Biogas A/S

Solrød Biogas applied to Solrød Local Authority for authorisation under the Environmental Protection Act to change and develop the facility. Solrød Local Authority decided that the change and expansion applied for would not cause significant impact on the environment compared to the previously evaluated project. The decision is, therefore, that an EIA will not have to be made. Read the background of the decision here.

Appendix to the environmental authorisation of Solrød Biogas A/S

The appendix covers an expansion of the capacity for biomass treatment at the facility, including new types of biomass, and establishment of an energy facility with a capacity of more than 1 MW. The appendix to the environmental authorisation comprises the approval notification, conditions, Solrød Local Authority's evaluation of the application and the reason for the decision.

Environmental authorisation

In connection with the implementation of Solrød Local Authority's Heat Plan and the 2010-2025 Climate Plan for Solrød Local Authority, the possibility was investigated of establishing a biogas facility based on residual products from pectin and carrageenan production at CPKelco in Lille Skensved, seaweed from beach cleaning in Køge Bay and animal manure from pigs and cattle.

Appendix to Local Plan

The objective of draft appendix no. 3 to the 2009-2021 Local Plan is to set up a new framework defining the physical limitation and the overarching new applications for the framework area for technical facilities such as a biogas facility with related functions. The appendix to the Local Plan is in accordance with the main structure guidelines in the 2009-2021 Local Plan. Consequently, only the new framework provisions will be appended to the 2009-2021 Local Plan.

Local Plan

The 2010-2025 Climate Plan for Solrød Local Authority presents a range of concrete proposals for projects and initiatives, all contributing to reducing greenhouse gas emission. One of the proposals is the establishment of a biogas facility. On this background, Solrød Local Authority and CPKelco have entered into a partnership with a view to establishing a biogas facility in Solrød Local Authority. This Local Plan aims to create the planning basis for establishing the biogas facility.

Preliminary study

In relation to the implementation of Solrød Local Authority's Heat Plan and the 2010-2025 Climate Plan for Solrød Local Authority, the feasibility of establishing a biogas facility was studied. Potentially, the construction of a biogas facility will significantly lower greenhouse gas emission, as biogas is a carbon-neutral fuel.

EIA report

The EIA report from Solrød Local Authority contains a non-technical summary, a project description, description of alternatives, an environmental impact assessment, visualisation and method. 150 pages.

Report on Solrød Biogas

Achieve more in-depth understanding of the challenges and recommendations supporting the planning and implementation of a biogas facility and the key experience achieved by Solrød Biogas in the process from initial idea to the actual construction of the facility in Solrød Local Authority from the linked report. 36 pages. (Only available in English)