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.
|Rio de Janeiro
|Lei N° 5184 from 2 January 2008
|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
|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).
|Public buildings, in which it is technically impossible to install a solar thermal system, are exempt from this regulation.
|State government of Rio de Janeiro