The SMUD PV1 and PV2 Generation Facilities are adjacent sites generating a combined 3.2MW from fixed solar arrays. As part of a system-wide upgrade program, SMUD engaged IEC to provide detail engineering and technical support for the replacement of the Remote Terminal Units (RTU’s) at both sites.  IEC verified the existing equipment wiring and documentation, worked directly with the RTU vendor and SMUD personnel to determine the design requirements, and provided a complete design package for the new equipment that facilitated the RTU replacement within a narrow time window. IEC was also on hand providing technical assistance throughout the installation process.