Statements of successfull STO-makers
Our common target is to tackle all the challenges and take advantage of the opportunities to achieve a real sustainability, both for the municipal administration and the neighbors of our municipality. In this point, Solar Thermal Energy is a very important potential for our municipality. The Solar Thermal Obligation will contribute to regulate, guide and enhance the development of these systems, increasing the use of energy coming from renewable resources and reducing CO2 emissions.

Mrs. Adela Martínez Cachá - Deputy Mayor for Environment and Urban Quality at the City Council of Murcia (SP). Vice-President of the Local Agency for Energy and Climate Change  of Murcia.

Today, energy is a part of everyday life! As leaders in our community, we have the obligation to set an example of good practice in the areas of energy saving and renewable energy use, so that citizens would acknowledge the importance of each gesture intended to contribute to the health of the planet.

Eng. Lucian ILIESCU – Mayor of Giurgiu Municipality (RO)
“Solar thermal has enormous potential and low costs. Our challenge in Lazio is to convince people of the advantages deriving from its use.”

Mr. Filiberto Zaratti - Regional Minister for Environment and Cooperation among Peoples, Lazio Region (IT)

Solar energy will be
the “sun of energy”!

Professor Eduardo de Oliveira Fernandes - Secretary of State for Environment (Portuguese Government, 1984-1985), Secretary of State to the Minister of Economy for Energy and Innovation (Portuguese Government, 2001-2002), former Chairman of the Commission for Buildings Thermal Regulations at the CSOPT  (Portuguese Ministry of Public Works, 2002-2006)

Our justifiably ambitious climate protection goals are reachable. However, this needs active combatants. With the provided regulations we found a passable way for on one hand making an effective contribution to reducing CO2-emmissions and on the other hand not overburden the single citizen. People do follow, because they feel, that we have to act for protecting the climate.

Tanja Gönner - Minister for the Environment of the State of Baden-Württemberg (DE)

STO Database

Detail View:Modification of the building code of the City of Rome.

City of Rome.

Municipality of Rome
Via della Greca, 5
00186 Roma (Italia)


This ordinance, issued by Rome City Council in 2006, introduced some modifications in the city building code, dealing with energy and water saving measures, as well as renewable energies.
The text of the ordinance could be downloaded from:


Ordinance Facts
Ordinance titleModification of the building code of the City of Rome.
Type of ordinancerenewable heat law
Starting dateFebruary 20th, 2006
Geographical areaMunicipality of Rome
No. of inhabitants, area2,700,000; 1,285 km2

Building scope: both new and refurbished, both public and private (different rules foreseen for the different building categories); Exemptions: in the historical or protected areas, it is necessary to check the compatibility of the measures with the specific requirements in terms of historical value, shape of the buildings, etc.

Technology priorities

Minimum contribution from renewables to cover the global building energy consumption and also a specific minimum requirement for domestic hot water; no specification about allowed technologies, even though solar thermal collectors and photovoltaic are explicitly mentioned; some mandatory water savings measures are included.

Size of the solar heating system requiredNot specified
Alternative measuresSee "Technology priorities"
Executing authorityMunicipality of Rome
Execution mechanism

The ordinance is a modification of the City Building Code, so its management falls within the building code management, done by the Municipality of Rome; it is not clear which kind of refurbishments are included; a document on technical requirements was developed by RomaEnergia, basing on the “best class” method for building energy certification, but it was never implemented.

Development and Implementation

This ordinance puts into practice a proposal done by the end of 2005, following the Regional Law no. 15 by Region Lazio (see the relative case study).
In the introduction of the ordinance text, it is also stated that it is a consequence of Law Decree 192/2005, which is in turn the reception of the European Directive on the Performance of Buildings.


New buildings shall cover 15% of their overall energy demand by passive energy saving measures and further 15% by renewables. 50% of the domestic hot water demand shall be produced by renewables.


This ordinance puts into practice a proposal done by the end of 2005, following the Regional Law no. 15 by Region Lazio. ACER, the Roman Association of Building Companies, has been involved in several meeting of a “Commission on Energy Certification of Buildings”. Their general attitude was a complete opposition to this solution.


This ordinance was issued by Rome City Council in February 2006, after the 6 months foreseen by Region Lazio to fulfil the requirements. The duration of the Ordinance is permanent.

Quality schemes productno
Quality schemes installationno
Quality schemes otherno
Flanking measures

No flanking measures have been put into practice.


The documentation for submitting the request of building permission must include a technical report, signed by a professional, assuring that the above described requirements are fulfilled.

Sanctioning feesNot foreseen
Costs for implementing

Since the Ordinance just modified the City Building Code, no additional checks are needed. No data available for the surplus cost of the building realised under the new provisions.

Monitoring and Results

No specific monitoring of the Ordinance was planned by the Municipality of Rome.

Quantitative results

No information available.

Costs borne by the enduserNo data available.
Effects on other sectors

No information available .


Except for a workshop on this subject, where also ACER and RomaEnergia were invited, no specific communication of the Ordinance was planned by the Municipality of Rome.

Future outlook

No changes foreseen.

Lessons learned
Barriers faced and overcome

- no rules for calculation are given, so everything depends on the honesty and on the fears of the professional who signs the technical report and of the building companies
- lack of communication policy
- lack of flanking measures
- lack of a monitoring plan

Success factors

- it is a powerful ordinance, since it directly affects the City Building Code;
- the Municipality personnel actually ask for the technical report, showing that the project is fulfilling the requirements.

Potential for improvement

- implementation of a technical annex for calculation and checks
- design and planning of an overall approach, including training, information and dissemination, monitoring


When such modifications are introduced in the building code, they should come together with consistent flanking measures. 

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