West Plains Engineering, Inc. is a mechanical, electrical, and utilities engineering firm with four offices in South Dakota, Wyoming and Iowa. We specialize in the design of mechanical and electrical systems for the construction industry and transmission, distribution and substation design in the utility industry. We design systems that are functional, energy efficient and environmentally friendly. Whether you’re building substations, transmission and distribution lines, or setting and testing protective relays, our highly skilled staff of professional engineers and senior technicians are your solution to the most complex power systems challenges.