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:Building Code of Carugate (Province of Milano)

City of Carugate (Province of Milano)

City of Carugate
Via XX Settembre 4 - 20061 - Carugate (Mi)
Phone +39 02921581
Fax +39 02925320


In 2003, the small (less than 15,000
inhabitants) Municipality of Carugate adopted a new building regulation which promotes energy efficiency in general.
In particular, following the model of Barcelona “Solar Ordinance”, the use of solar thermal systems to produce at least 50% of the domestic hot water demand was introduced as a mandatory measure for new buildings.



Ordinance Facts
Ordinance titleCity Building Code of Carugate
Type of ordinancesolar thermal ordinance
Starting dateNov. - Dec. 2003
DurationStill in operation - No closing foreseen
Geographical areaMunicipality of Carugate
No. of inhabitants, areaAbout 14,000; 5 km2

Municipality level; only new buildings; exemptions: historical areas

Technology priorities

Facultative and mandatory measures are foreseen; solar thermal is mandatory

Size of the solar heating system requiredSize not defined; it should cover 50% of the domestic hot water demand
Alternative measuresNone
Executing authorityMunicipality of Carugate
Execution mechanism

The new measures were embedded in the local general Building Code

Development and Implementation

This regulation was promoted also thanks to the following background elements:
- EU Directive on Energy Efficiency in Buildings;
- Barcelona “Solar Ordinance”;
- raising interest on the side of the Regions (and, more in general, of the Local Bodies) for the promotion of sustainable buildings.


- to Introduce energy efficiency measures and renewable energy technologies as standard and mandatory solutions for new buildings.
- to act as a good practice, stimulating the replicaton in other Municipalities


- the Carugate Municipality promoted this ordinance;
- “Rete Punti Energia” (association of energy agencies of Region Lombardia) gave the Municipality the necessary technical support;
- the building sector (designers, builders, etc.) was involved from the beginning;
- the Province of Milano, which is trying to extend this kind of building regulation to other Municipalities.


The new building regulation was approved on 24/11/2003 (valid from 24/12/2003).
No closing is foreseen, unless it will be modified by an updated version of the local building regulation.

Quality schemes productno
Quality schemes installationno
Quality schemes otherno
Flanking measures

 -promotion in local fairs and schools
-pilot plant in the Municipality buildings
-low interest loan from a local bank
-trainings for designers and building companies

Sanctioning feesNot foreseen
Costs for implementing

Improved skills needed by the technical personnel to evaluate building projects.

Monitoring and Results

The Municipality of Carugate, togheter with “Rete Punti Energia”, is monitoring the outcome of the regulation.

Quantitative results

The regulation brought to a total (installed or approved) of about 485 m2 by 2006. The average per capita is 1 m2 per 28 inhabitants, while the Italian average is 1 m2 per about 1,400 inhabitants.

Costs borne by the enduserFor solar thermal, the extra-cost per m2 of building is 0.5%, with a payback time of 6 years.
Effects on other sectors
Future outlook

No information available.

Lessons learned
Barriers faced and overcome
Success factors
Potential for improvement
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