Biomedical engineers earned a median yearly income of $88,670, while electrical engineers made a median salary of $89,180 annually. Environmental engineers earned a median income of $82,220, while the median income for mechanical engineers was $82,100 per year, reported the BLS in May 2013.iomedical engineers earned a median yearly income of $88,670, while electrical engineers made a median salary of $89,180 annually. Environmental engineers earned a median income of $82,220, while the median income for mechanical engineers was $82,100 per year, reported the BLS in May 2013.