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E-Mon, established in 1981, is the industry leader in the manufacture of solid-state electronic kilowatt-hour submeters, automatic meter reading & billing software and other energy management products and services. E-Mon's products are installed worldwide for tenant billing, cost allocation, demand side management, energy conservation, load profiling and green building programs in skyscrapers, shopping centers, airports, factories, office buildings, apartment buildings, college campuses and government facilities. The company's customer base ranges from small retail stores to Fortune 500 corporations. After several years of research and development, E-Mon brought the first fully electronic kilowatt hour submeter to market. This product, the E-Mon D-Mon, quickly became the industry standard, making E-Mon the leader in the submetering market. Since that time, E-Mon has continued to expand its product line with state-of-the-art technology in demand profile analysis and energy consumption aggregation. To position itself for international growth, E-Mon has established a network of over 4,000 distributors supported by independent sales representative agencies throughout the world. E-Mon maintains in-house engineering staff for hardware/software development and sales and technical support staff for pre- and post-sale assistance.


850 Town Center Dr
Langhorne, PA 19047
Phone: 215-752-0601
Fax: 215-752-3094




Energy Management
Browser-based Meter Dashboard for Multi-Facility IP LAN/WAN Apps

Building Automation (Energy Metering)
Dual-Protocol Interval Data Recorders (IDR)

Submetering Equipment
E-Mon D-Mon “Green Class” Meters for Green Building Energy Monitoring

Energy Recovery Systems
E-Mon D-Mon Smart Meters

Building Automation (Controls)
Web-Mon Internet-enabled Energy Meter Dashboard