110 MW Solar Project: Greenfield Substation and Transmission Line Design

Client Challenge

A renewable energy developer required engineering and permitting support to launch a 110 MW solar facility, including a greenfield collector substation and transmission line upgrades connecting to the utility interconnect substation. The project needed a partner capable of managing the design from concept to construction while addressing a non-standard interconnection requirement.

How We Helped

SGC Power was selected through a competitive bid to deliver the complete design package, including transmission line engineering and substation civil, electrical, protection, and control design. Our team prepared 30% and 75% issued-for-construction drawings, then finalized record drawings at project completion. We also conducted supporting studies, protection settings, arc-flash analysis, equipment specifications, and provided construction support throughout the project.

The project required a DVAR system on the tertiary of the main power transformer, which differed from standard collector substation design. SGC Power integrated dynamic reactive compensation into the protection and control scheme, ensuring the facility met the utility's interconnection requirements without affecting the project schedule.

Powerful Results

SGC Power delivered the project on time and under budget. The client has since engaged SGC Power for additional renewable energy projects, reflecting the strong working relationship and design quality established during this engagement.  

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