138kV Substation Expansion

A bitcoin mining operation in Ohio needed more capacity from its substation to support growth without putting the existing station at risk. Spark Power took the expansion from engineering design through construction and commissioning, so the new capacity was integrated into the station and verified before it went into service.

• Engineered the expansion around the existing station, designing bus modifications and transformer containment to fit the equipment already in place.
• Planned E-House integration into the design from the start instead of adding it late.
• Built the high-voltage and medium-voltage sides as one package, so switching, protection, and interconnection came together without gaps between scopes.
• Treated testing and protection verification as a required step before energization, not a formality at the end of the job.

• Turnkey design-build-commissioning under a single partner. Engineering, procurement, construction, and commissioning delivered without third-party handoff risk.
• High-capacity grid interconnection enabled. 115 MVA transformer and 138kV expansion provide the grid-scale power delivery the facility requires.
• System reliability increased through engineered 138kV expansion. System reliability increased through an engineered expansion.
• NETA-compliant testing eliminated energization risk. Rigorous pre-commissioning testing and protection verification confirmed safe, reliable energization before go-live.