I have a small website for my electrical contracting business named MyCompany.com

I would like to purchase a second domain called MyTownElectric.com

I don't want to have to make a completely different website for the second domain, I would rather just redirect it to the main site. Is there a way to do this without the search engines penalizing me? A 301 redirect?

FWIW, it would only be 1 more domain, I am not going to buy up a bunch of them and redirect them all.