Local family owned electrical contractor and service electricians for 30 years. CSE is located in Ellisville, MO 63011 and has been serving St. Louis and the surrounding counties including St. Charles, Jefferson, and Franklin since 1987. CSE serves both residential and commercial customers and is involved in all aspects of electrical contracting including solar panels, data, phone, fire alarm, refrigeration control wiring, and security wiring. We have a large portfolio of custom home wiring up to 22,000 square foot homes, tenant finish projects of all sorts, grocery stores, medical facilities, schools, restaurants, and explosion proof electrical systems.