Commissioners approve two Microsoft‑area substations after sharp public safety debate
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Summary
After extended public comment about safety and traffic, the board granted conditional use permits for two substations tied to a proposed Microsoft data center, with conditions including FAA clearance, fire review and road improvements.
The Lyon County Board of Commissioners on March 5 approved conditional‑use permits for two electrical substations proposed to serve a planned Microsoft data center in Silver Springs.
Microsoft and NV Energy presented the larger Nighthawk 345/120 kV substation and a smaller 120 kV Microsoft substation, explaining the siting was driven by the county’s designated above‑ground utility corridors and the need to tie into Nevada Greenlink transmission. NV Energy emphasized engineering standards, containment and monitoring systems for transformers.
Public testimony was extensive and sharply critical. Fire chiefs and emergency managers warned the projects would change the county’s risk profile and could require sustained staffing increases, new apparatus and regional mutual‑aid planning. Tim McHarg, Central Lyon Fire Protection District chief, said industrial‑scale electrical infrastructure would “require increased minimum daily staffing levels” and specialized equipment and cautioned the district must be supported sustainably.
Brett Levitt, representing a nearby multifamily development, argued the neighborhood commercial zoning was not an appropriate place for a regional transmission facility and urged relocation to a heavy‑industrial district. Other speakers raised concerns about FAA airspace impacts, EMF, visual impacts, and potential effects on groundwater.
NV Energy’s Mark Sullivan and Microsoft representatives responded that the siting is intended to efficiently connect to transmission corridors and that the substations will be built to current safety and containment standards; Microsoft said it will not seek local tax incentives and pledged to fund required infrastructure and not raise local rates as a result of the projects.
The board approved the larger Nighthawk substation after a close vote (motion recorded as passing by a slim margin). The smaller Microsoft substation—sited closer to the planned campus—was approved with a condition requiring a masonry wall and other standard conditions including FAA 7460 clearance and fire plan review. The approvals include requirements for paved construction access, noise limits at property lines and coordination with the Central Lyon Fire Protection District and NV Energy.
Next steps: The applicant must obtain an FAA determination (Form 7460), complete fire‑plan review and meet all conditions stated in the county’s approvals before construction permits issue. Commissioners said they expect coordination with local fire districts and county staff on resource and response planning.
