Mechanical, Electrical, and Plumbing (MEP) engineering firms have a big role to play in how buildings work. They handle the design and setup of systems that keep things running smoothly, safely and efficiently. These firms take on everything from system planning and energy use analysis to sustainability advice, depending on the needs of the project. Prospect Wiki has put together a list of MEP companies in the U.S. It’s a handy resource for businesses looking to team up with experienced professionals to help get their projects done right. You will find some of the well-known names that include 2L Engineering, 303rd Engineering Group, Affordable Concepts and more on Prospect Wiki.