Solar obligation by the state of Rio de Janeiro, Brazil
 Solar obligation by the state of Rio de Janeiro, Brazil

Solar obligation by the state of Rio de Janeiro, Brazil

The state of Rio de Janeiro is the front runner in terms of solar building codes on a state level. In January 2008, its state government approved a law that makes the installation of solar water heating systems mandatory for public buildings.


Country Brazil
State Rio de Janeiro
Name Lei N° 5184 from 2 January 2008
Goal Solar thermal systems are mandatory for new and refurbished public buildings in Rio de Janeiro. Solar energy must cover 40 % of the annual hot water demand.
Date when law passed Published on 2 January 2008
Date when law came into effect January 2008
Target group Public buildings
Special requirements The materials and equipment used in implementing the system have to comply to the Brazilian norm NBR, and the Brazilian Technical Standards Association (Portuguese: ABNT).
A technical body will then test its efficiency, so that the system can be accredited by the National Institute of Metrology, Standardization and Quality Industrial (INMETRO).
Exceptions Public buildings, in which it is technically impossible to install a solar thermal system, are exempt from this regulation.
Last review March 2009
Further information Cidades Solares: Governo do Rio de Janeiro:
Contact  State government of Rio de JaneiroSecretaria de Estado de Obras – SEOBRAS” (state bureau of constructions)
Mr. Sérgio Poubel de CamposCabinet Chief, Centro, Rio de Janeiro, RJ, Brazil Email:

Baerbel Epp

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