Solar Obligation by the Municipality in São Paulo
 Solar Obligation by the Municipality in São Paulo

Solar Obligation by the Municipality in São Paulo

The huge city of São Paulo, with its approx. 19 million inhabitants, approved the first solar obligation on a municipality level in July 2007. Solar water heaters have since become mandatory in a wide range of new residential and non-residential buildings.

Country /Municipality

Brazil / São Paulo


Lei N° 14459, from 3 July 2007


New buildings in São Paulo require the installation of a system that uses solar energy for heating water in cases of both residential and non-residential use.

Date when law came into effect

Solar thermal is mandatory for building permits approved after July 2008

Target group

  • Hotels, motels and similar buildings
  • Health services
  • Sport clubs
  • Barracks
  • Schools, nurseries
  • Public swimming pools
  • Private buildings with up to three bathrooms  

The buildings covered are those intended for the following use: commercial (in special cases), industrial (if hot water is needed for the industrial process or if showers are to be installed for the staff), and, in general, any other use that entails the presence of dining rooms, kitchens or collective laundries.

Special requirements

The solar thermal system is to cover at least 40 % of the entire annual demand for heating sanitary water and pools.  
Products have to be certified in compliance with the National Institute of Metrology, Standardization and Industrial Quality (INMETRO).


The provisions shall not apply to buildings in which it is technically impossible to achieve the conditions to meet the above-mentioned share of annual energy demand.

Last review

May 2009

Further information

Cidades Solares:  
Prefeitura do Municipío de São Paulo:


Prefeitura do Municipío de São Paulo
Secretaria Municipal de Habitação
Mr. Elton Santa Fé Zacarias
Edifício Matarazzo- Viaduto do Chá, 15, Centro, Diadema- SP, Brazil


Baerbel Epp

Bärbel Epp is Founder and Director of the German communication and market research agency solrico and editor-in-chief of