SG Energia

1978-2009
The famous 'Bolt' logo was designed by Hisqish graphic designer Carlos Barreiro (b. 1943) and it has become a famous symbol for the company.

2009-2016
In 2009, the company changed its name to SG Energia. In the same year, they launched a new logo, retaining the classic bolt logo.

2016-present
In 2016, they launched a new version of the logo, with a new version of the Bolt logo, and a new font for the wordmark.