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Beacon project:

zero:e-park Hannover

30457 Hannover, City of Hanover, DE (Front Runner region) , Germany
Contact Wohlfahrt, Matthias

03.2013 © M.Wohlfahrt
03.2013 © M.Wohlfahrt
envelope curve
03.2014 © M.Wohlfahrt
03.2014 © M.Wohlfahrt
03.2014 © M.Wohlfahrt






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General description

By building nothing but Passive Houses in the zero:e park in Hirtenbach in southwestern Hanover, the City faces the challenge of building a new residential area with 330 single-family homes as a zero-emissions neighborhood. The plan is based on an innovative concept which ecological objectives are derived from the Kronsberg neighborhood, which was built more than ten years ago for Expo 2000. Overall, the new neighborhood will not emit any carbon from heat supply and household electricity. The zero:e park in Hirtenbach, based on the Kronsberg neighborhood (1999), is thus another milestone for Hanover’s climate protection objectives. After a nationwide urban development competition in 2006, apartment construction company ‘meravis Wohnungsbau und Immobilien’ and Niedersächsische Landgesellschaft (NLG) partnered to develop the neighborhood until it was ready to be sold. Now that construction has started, it is an appropriate time to analyse the extent to which regional factors and municipal resources are important or even a requirement for planning and implementing such a project. As a basis for planning, the City’s Bureau for Climate Protection worked with proKlima to develop an energy concept including the results of the urban development competition (2005/2006). The winning concept from Bau¬frösche and foundation 5+ of Kassel included a detailed design that provided more information for requirements in the develop¬ment plan and for the need for compensation. The basic principle of the energy concept is to bring the houses’ heat demand to a minimum thanks to energy-efficient construction with passive and active use of solar energy; taking the use of renewables into consideration, only a small amount should need to be compensated for outside of the neighborhood. For heat supply, average residual carbon emissions were calculated to be 900 kg/year per house. Compared to a neighborhood built only to the current legal standard (EnEV 2009), consistent application of the Passive House Standard reduces greenhouse gas emissions from heating by 65 to 87 percent. Costs for heat supply are also minimized. Important aspects of the zero:e park include • constructing all buildings as Passive Houses • using solar thermal energy to reduce residual energy demand • using household appliances that consume electricity efficiently • compensating for remaining carbon emissions from heat and household electricity demand with renewable energy production facilities For the entire neighborhood to achieve climate neutrality, compensation for heating and household power was calculated to be an average of 1,300 MWh; this amount is to be covered with electricity from a reactivated hydropower plant. To implement the previously described goals, developers and building owners need intensive and comprehensive consulting, information, and other support (including quality assurance). Along with an initial consulting service from the Bureau for Climate Protection, building owners can also take advantage of funds from proKlima to hire an “energy guide.” This guide gives conceptual advice, points out possibilities for optimization, and starts the quality assurance process. (Source: E. Kirscht, Bureau for Climate Protection, City of Hanover) interim result, 06.2013: http://www.hannover.de/Leben-in-der-Region-Hannover/Planen,-Bauen,-Wohnen/Bauen-Denkmalpflege/Hannover-baut/Klimaschutzsiedlung-zero-e-park/Zwischenbilanz-zum-zero-e-park

Project type

New build

Project scale

urban neighbourhood

Ownership type


Energy efficiency and use of renewables

renewable appliances: Solarthermal, PV, biomass (wood)


B-Plan 1522 In der Rehre - Süd rechtsverbindlich 2010_07_01.pdf - development plan

Intelligent Energy Europe
Passive House Regions with Renewable Energies
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