I like the jingle; I think it's a style of dance music called "Xote", that originated in the northeastern region of Brazil which the utility serves:
http://www.youtube.com/watch?v=24jz0Mz5Fx4

Here's an old ad for ESB (Ireland) way back in the 1980s... very nostalgic complete with Dusty Springfield music and sensible Irish granny type.

http://www.youtube.com/watch?v=btqSxlUJyxo


Here are some modern ones :
http://d1149200.u59.hosting365.ie/our_work/video/pages/video_5.html (quicktime player required) - for ESB Networks ("neutral" utility line operator)

and

http://d1149200.u59.hosting365.ie/our_work/video/pages/video_14.html

I like those! Especially the old one, but the new ones are pretty imaginative.

Their latest ad actually reuses their original Dusty Springfield track, just remixed for 2008

http://www.youtube.com/watch?v=aAYFS-3hY_Y

It's all about green energy these days though.

€22 billion sustainable energy programme.