European Solar Thermal Industry Federation


Best practice implementation of solar thermal ordinances

Solar thermal ordinances (also known as "solar obligations") are now a major tool for the development of solar thermal markets. The overall objective of ProSTO is to support European local authorities in planning, developing, introducing and managing efficient solar thermal ordinances (STOs).

A large number of tools are available on the website (see STO database, STO toolbox and STO helpdesk) and five best practice STOs are being developed by the participating local authorities in cooperation with scientific partners.


ProSTO webinar:

"Setting the right incentives for solar thermal in Europe"
30 November 2010, 15.00-16.30 CET.

Presentations available to download on the ProSTO website

ProSTO workshops

“Solar thermal ordinances: making a commitment to local sustainable energy”

  • 29 October 2010, Committee of the Regions, Brussels (Belgium
    To view the programme, please click here
  • 15 April 2010,Congress Center/International Expo Center, Sofia (Bulgaria)
    To view the programme of the Workshop, please click here


For further information, please visit the ProSTO project website or consult the following project deliverables below:

  • ProSTO policy paper - now available to download, please click here
  • New proSTO brochure available - please click here to download
  • Please click here to view the ProSTO flyer
  • The “STO Developer's Blueprint” is designed to guide the STO developer step-by-step through the process of planning and implementing a STO at local level.


ProSTO policy paper

(to download, please click here)


Solar Thermal Ordinances:Making a commitment to local sustainable energy

A cost-effective energy policy for local authorities

We, the ProSTO project partners, support the wider adoption and implementation of solar thermal ordinances in Europe. We call for the speedy adoption by all EU Member States of best practice regulations making it mandatory, at least where existing buildings are substantially renovated, new buildings are built or heating systems are replaced, that a minimum share of the heating requirement is met from renewable sources in general and from solar thermal energy in particular.

We call on the EU institutions to actively encourage the introduction of solar thermal/renewable heat ordinances, using all the leverage provided by the National Renewable Energy Action Plans (NREAPs), the implementation of the Energy Performance of Buildings Directive (EPBD) and the forthcoming eco design/energy labelling of water and space heating systems regulations.

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