We work on several projects that center around the environment, energy, nature, transport, waste, urban development and water. A few of our expertise areas and projects are described below.

In Denmark, we produce over 2.5 million tons of waste per year. This means that every Dane throws out 8 kg of rubbish per week on average. In order to minimize this number, we must be better at sorting and recycling our waste. In the next five years a special focus will be put on the Waste Management Plan 2014-20 and The Green House has prepared a number of activities that support the implementation of this plan and help create awareness about waste sorting and recycling. The Green House and Køge municipality waste department have worked together for many years to make Køge a model city for waste sorting.

We arrange a variety of activities with a focus on waste and recycling, including guidance on waste as a resource, collection of biowaste, resource check for municipal institutions to review and adjust their waste-handling procedures and the collection of used batteries and lightbulbs. Most significant is our project regarding compost guidance and compost worms for home composting.

We expect to start a new project with selected institutions in Køge municipality to find a model for future waste in Køge and work on how to better inform citizens about waste sorting.

Contact Henrik Lerdorf to know more.


Agenda 21
Agenda 21 is the international designation of UN’s action plan the “Agenda for the 21st Century”, which aims to create a sustainable development, so that the next generations will have the same opportunities as us.

The basic principle of Agenda 21 is: “Think globally – act locally”, stressing that sustainable development begins at the local level by involving citizens and encouraging action while initiating sustainable project ideas. The Green House is Køge municipality’s local Agenda 21 center.

Contact Jacob Skjødt Nielsen for more information on Agenda 21.


Urban development
Køge municipality is in the process of rapid urban development. At the moment a new fast train connection to Copenhagen and Ringsted is being developed, furthermore, Køge Campus continues to grow and a new top of the line super hospital is being built. Additionally, there is breeding ground for new construction further out in the countryside.

The prerequisite for good urban development is that all stakeholders – from the municipality and private developers to residents, institutions and businesses are involved early in the process.

Contact Jacob Skjødt Nielsen for more information.


The total climate impact of a typical Danish diet is about 3-4 tonnes of CO2 per year, which corresponds to approximately 20% of the emissions the average Dane impact the climate with annually. The Green House wants to highlight the climate impact of food production and inform citizens about the advantages of eco-labeled and organic foods. A more climate-friendly diet contains more vegetables and less animal products.

In our café we serve tasty, healthy and climate-friendly dishes in order to inspire alternatives to our daily eating habits. In order to encourage daycare centers and after-school programs to focus on healthier and happier children, we have developed a catalogue packed with ideas for games and activities, as well as lectures and workshops on foods. Furthermore, we offer customized presentations and follow up guidance on healthy food habits in the home and in institutions.

Contact Jacob Skjødt Nielsen for more information.


Climate change adaption
The climate is changing and on our part this means that there will be more and heavier rain at a more frequent rate. The water level in Køge Bay is expected to be 80 cm above current levels by 2100, which will mean a much greater risk of flooding by storm surges.

In order to find sustainable solutions to the climate change that can engage and motivate sustainable action, The Green House has developed a system that allows the rainwater of the house to be recycled and flow into Køge River. In addition, we have established a number of projects on the handling and recycling of rainwater on their own land in collaboration with homeowners’ associations and village and roads associations in Køge municipality.

We are also responsible for a large demonstration project in Faxe Municipality, where we designed a system with office buildings and a school that handles rainwater in 10 different ways, including percolation and recycling.

Contact Henrik Lerdorf to know more.


1996 it became a legal requirement to use renewable energy, when the electricity market was liberalised. The legal requirement means that the user must use and pay for renewable energy. In practice, this means a “green” tariff of 20% of energy consumption and a market-based rate for the remaining 80%. However, consumers can require paying a green tariff for a larger share of their consumption, thereby committing the companies to provide more renewable energy.

Renewable energy is CO2 neutral. The use of it does not present emissions of the greenhouse gas CO2 into the atmosphere – as opposed to the use of fossil fuels (coal, oil and natural gas).

The Green House has ongoing campaigns focusing on standby consumption, the choice of the right lighting, and the power and light of energy-saving bulbs. Furthermore, we answer questions and provide guidance on electricity and energy in the home and on renewable energy and alternative sources of heat. In cooperation with the Danish supermarkets; Super Brugsen, Kvickly, and Wicka we have carried out campaigns with a focus on energy-saving light bulbs.

Contact Jacob Skjødt Nielsen for more information.


A number of the products we use in our daily life have serious environmental consequences. Todays’ labels provide more and more information and are good to use for any consumer in order to form an overview. We also advice that consumers use eco-labeled and organic products, as it is better for nature, animals and also for one’s health, as chemical fertilizers and synthetic pesticides are not used in organic farming. Furthermore, recycling, waste sorting, energy saving and renewable energy sources are all actions that help save the environment and are now within most people’s reach and often better financial choices.

In The Green House, we choose eco-labeled products and provide information to citizens and make campaigns often in cooperation with shops and businesses.

Contact Henrik Lerdorf to know more.


Our actions can be more or less harmful to the environment and when it comes to consumption and behavior we, in many cases, are able to choose more or less environmentally harmful solutions. It is therefore essential that care and respect for the environment is integrated into everyday life. The Green House is working to better the condition of the nature and communicate the best environmental solutions.

The Green House is the initiator of a number of projects in which citizens, associations and the municipality participate in restoring and strengthening the regions’ biodiversity and sustainable natural planning. We work with projects such as; village ponds, river restoration, hogweed control, and landscaping. Furthermore, we are currently working on “Køge Common Ground”, a common garden for the citizens of Køge municipality that is intended as an oasis for anyone interested.

Contact Marianne Mark to know more


The Green House offers inspiration on how you can help promote sustainable transport. There are two main ways of creating a greener road transport; either by saving energy or by converting fossil fuels (gasoline, diesel and natural gas) to alternative fuels (bioethanol, biodiesel, biogas, electricity and hydrogen).

The Green House has carried out various projects related to sustainable transport and transport habits. We have an electric car-sharing system as well as a range of electric bicycles, which can be borrowed, free of charge.

Contact Jacob Skjødt Nielsen for more information.


Water is our most important resource and the water abstraction for our daily consumption is not sustainable. We use more groundwater than the earth can create. Therefore, the groundwater levels are falling and we have problems with “natural” pollution from nickel released from oxygenated layers in the subsurface, and the salt water that enters groundwater. Water should be used wisely and we should conserve it where we can.

Each spring we conduct a water saving campaign in Køge municipality, where we hold lectures and exhibitions on water use, wastewater, and the reuse of rain water. Furthermore, we provide inspiration for a non-toxic garden and exemplify many environmentally friendly products for home and gardening.

Contact Henrik Lerdorf for more information.

We are open to ideas concerning new projects in these areas and others. Kindly contact us.