Electrical Reliability Services, Inc. (ERS) is an electrical services company in Denver providing comprehensive testing, maintenance, and power system services. Operating since 1971, ERS serves utilities, data centers, renewable energy, commercial, and industrial clients. Services include acceptance testing and maintenance, power system services, DC power testing and maintenance, protection and controls, transformer services, and compliance programs. ERS also offers preventive maintenance programs to extend equipment life and improve reliability, arc flash studies to maintain electrical safety information, emergency response teams for power restoration, and support for NFPA 70B compliance.
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