Our Masterplan & Roadmaps

ProjectZero is the vision for making the entire Sonderborg-area CO2-neutral by 2029.


During 2008 and 2009 more than 75 leading Danish energy specialists analyzed the areas opportunities and challenges and created the ProjectZero 2029 Masterplan, concluding that Sonderborg can achieve ZEROcarbon by 2029.

Key issues are as follows:

  • Massive focus on smart use of energy. Lowering consumption by energy efficiency improvement is estimated to reduce energy consumption by 40% compared to baseline 2007.
  • Conversion to multiple renewables including efficient use of the areas manure and waste from farming, geothermal heat, wind, solar heat and photovoltaic
  • Creation of the world first intelligent, dynamic energy system in close cooperation with SE (Utility Company) and other stakeholders.

The solution is based on the areas own renewable energy sources and respects that the grid connects to the national/international grid. Smart and commercial viable solutions are the preconditions. Socio-economic analysis proves that the 2029 Masterplan implementation can be made profitable. As a positive side effect, Bright Green Business (the business creation aspect) will create growth and new jobs for society.


Cities play a crucial role in the sustainable zero-emission energy transformation in all countries. In that sense, the municipality of Sonderborg strives at becoming a role model and a forerunner city in the climate initiatives. Since 2007, becoming a carbon neutral city has been one of the main goals of Sonderborg. The goal is to be reached by 2029 and the main driver behind this process is ProjectZero (public private partnership set by the Sonderborg’s City Council in cooperation with private businesses in the area).

Along the way to 0 CO2 emissions, Sonderborg puts its citizens, businesses, educational institutes and utility companies in the centre of the process. This enables them to contribute to the way the city is going to transform rather than have the city council decide for all without consulting with the stakeholders that will experience and live in this transition.

Since 2007, Sonderborg reduced its carbon emissions with 35%. Roadmap2025 looks into how will Sonderborg reach 75% CO2 emission reduction by 2025 and pave the way to a carbon neutral city in 2029. The roadmap has been developed by ProjectZero and approved and ratified by the City Council end of 2018. In the development process numerous stakeholders have been involved. To do that, the city was divided in 8 segments. Then a calculation on the needed CO2 emission reduction was made. This calculation showed how much carbon emissions need to be reduced in each of the segments to reach an overall 75% CO2 reduction by 2025:  

  • Energy – 295,000 tonnes
  • Agriculture – 8,000 tonnes
  • Housing associations – 9,000 tonnes
  • Private rental – 5,500 tonnes
  • Owner-occupied housing – 35,000 tonnes
  • Passenger transport – 21,000 tonnes
  • Businesses – 14,500 tonnes
  • Heavy transport – 4,000 tonnes

Representatives from each segments were invited to workshops and discussions and then were given the opportunity to propose initiatives that will reduce the carbon emission in their segment. These initiatives have then been evaluated, the result of which are 50 concrete initiatives for reducing the carbon footprint of Sonderborg until 2025. The initiatives are incorporated in the Roadmap2025 and furthermore each initiative is given a CO2 reduction equivalent.

The Roadmap2025 is a continuation from the series of Roadmaps Sonderborg has acquired            Roadmap2020     and      Roadmap2015


The new climate solutions will demonstrate best/next practice and establish market dynamic for a growing Bright Green Business demand. Several (local) companies have achieved two digit growth figures on climate and energy technology/solutions.

ProjectZero achieved in spring 2010 the EU-commissions energy price award: Sustainable Energy Communities.

ProjectZero cooperated with WWF (World Wildlife Foundation) to develop a simple tool (indexes), to assist the world’s cities to implement sustainable solutions and create sustainable cities.

ProjectZero´s own company learning program, ZEROcompany, created together with the CDP Carbon Disclosure Project a special participation program for SME-companies, with the result that 40% of all Danish companies which had been registered in the CDP-database in 2009 had its base in Sonderborg.

Sonderborg became in 2011 a participant in the Clinton Climate Initiative´s Climate Positive Development Program. In this program ProjectZero share and receive important lessons learned with other CPDP partners and the C40 Cities-network. Learn more about the CPDP-project here: http://www.c40.org/networks/climate_positive_development

Sonderborg was in November 2013 a signing party at the EU China Urbanization conference in Beijing, where Sonderborg also presented its new cooperation with Haiyan County (China). The cooperation is focused on scaling the best practice from Sonderborg in Haiyan, starting with energy efficient building construction, green urban planning and the associated competencies.

Sonderborg demonstrates today some of the newest and most advanced energy solutions within intelligent heat pumps, fuel cells, ZERO+ house construction, intelligent roof-systems etc. You are invited to visit Sonderborg and be inspired by Sonderborgs green transition. You can also join Green Seminars learning seminars and create a green masterplan for your own city. Learn more about Green Seminars here: http://www.greenseminars.com/

Learn more about a Green Denmark and the Danish solutions here: http://stateofgreen.com/en




About Sonderborg

Municipal Energystrategy 2014

Download the Municipal energystrategy 2014