Illustration Signatories

The fight against climate change will be won or lost in urban areas. A vast majority of the European population lives and works in cities, consuming an estimated 80% of the energy used in the EU. Local administrations, as the closest government level to citizens are ideally placed to address climate issues in a comprehensive manner. More and more cities are thus deciding to take up the challenge, as shown by the growing number of Covenant of Mayors signatories.

Signatory cities vary in size from small villages to major metropolitan areas such as London or Paris.

The commitments for Covenant Signatories are linked to the European Union’s Climate and energy policy framework. These include the European Union’s climate and energy package for 2020 for signatories who have joined between 2008 and 2015 and the European Union’s 2030 climate and energy framework as well as the EU Strategy on Adaptation to Climate Change for signatories joining after 2015.

As of October 2015, Covenant signatories commit to adopting an integrated approach to climate change mitigation and adaptation. They are required to develop Sustainable Energy and Climate Action Plans with the aims of cutting CO2 emissions by at least 40% by 2030 and increasing resilience to climate change within the first two years of adhesion.

The list of cities that have signed up to the Covenant of Mayors can be found below.


Mitigation (2020 target)2030 CO2 targetAdaptation


Mayor (or equivalent): Anna Tenje
Population: 90,000 inhabitants

Covenant status

Date of adhesion: 21 October 2008
Status 3


Main contact: Henrik Johansson
Position: Environmental coordinator
Phone: +46 470 41330

Covenant Supporters

Covenant Supporters Countries Signatories
The Climate Municipalities (Sweden - Klimatkommunerna)Sweden21


The Green Data Center
Sector: Tertiary buildings equipment/facilities
Implementation timeframe: 2011 - 2012
Area of intervention: Integrated action (all above)
Policy instrument: Not applicable
Responsible body: Växjö Energy
CO2 reduction :
32 t CO2 eq./a
Energy savings (MWh):
1533 MWh/a
Renewable energy produced (MWh):
17 MWh/a
Implementation cost (€):
1.12 Million €
electricity saved:

Description: In 2012, a new energy efficient server hall was inaugurated in Växjö. It is an example on how to optimise energy use. To start with, by combining the needs of several organisations, we have saved about 1,533 MWh of electricity for running the server hall. Server halls need a lot of cooling, which is normally solved by the use of electric cooling machines. In Växjö, we have instead connected the server hall to the district cooling network, which produce cooling from biomass-based district heating. In this way we have replaced another 580 MWh of electricity and instead use biomass. On top of the server hall there is also a PV plant.

Rate this benchmark: BadPoorFairGoodExcellent (1 vote)

Benchmarks Date Language
The Green Data Center16 May 2017 en
Coordinated transport of municipal purchased goods16 May 2017 en
Bio-based steam production in Lantmännen Reppe industry in Växjö16 May 2017 en
Last updated at: 16 May 2017
The sole responsibility for the content of this website lies with the authors. It does not reflect the opinion of the European Union. The European Commission is not responsible for any use that may be made of the information contained therein.
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