Penrose Lane in Yerington NV: Proposed 4.6 Million Square Feet of Data Centers

Michelle Sanow-Trevino lives in Mason Valley NV and shared a re-zoning request notification for her neighborhood in the Penrose LANE area that will be heard at the Board of County Commissioner meeting on August 7, 2025 at 27 S. Main St. in Yerington NV. Copia Power DevCo, LLC is applying to change 505 acres FROM Rural Residential 20 acre lot minimum/Agriculture TO “Specific Plan” Zoning for the proposed Monarch Data Center. The planned Monarch is 1000 mega watts, 4.6 million square feet of data centers including battery energy storage systems, natural gas backup system, electrical substation, and high voltage power system. If it’s rezoned, the L & M Family Limited Partnership and Masini Investments would plan to sell these properties to Copia Power DevCo, LLC.

Referencing CJ Jorgensen’s article for Bexnvbezx from July 17, 2025: https://nevbex.com/2025/07/17/monarch-data-center-lyon-county-approval/

“The Lyon County Planning Commission, during its July 8 meeting,unanimously recommended approval of Copia Power Devco LLC’s request for a master plan amendment from Agriculture to Specific Plan for its proposed 1,000MW (megawatts) data center.

“If fully approved, Monarch Data Center will be made up of 14 separate buildings across two adjacent parcels. The northern parcel is roughly 240 acres and located at 150 Penrose Lane. The southern parcel is approximately 265 acres at 155 Penrose Lane.

“L&M Family Limited Partnership is listed as the owner of the northern parcel, while Masini Investments appears as the owner of the southern parcel. While the owners appear as different entities, they are, in fact, owned by the same party. The overall owner was not identified in the submitted materials.”

Here is the agenda and supplemental documents for the Lyon County Board of Commissioners meeting on Thursday, August 7, 2025 beginning at 9am at 27 S. Main St. in Yerington, Nevada. The meeting can be attended in person or by zoom (link on agenda) with opportunities for public comment. Item 15.c reads: For Possible Action: To approve the request from Copia Power Devco, LLC, for a Master Plan Amendment from Agriculture to Specific Plan for the Monarch Data Center, consisting of 4.6 million square feet of data centers over 14 separate buildings and to include battery energy storage systems, a potential natural gas backup system, an electrical substation, high voltage power lines and other accessory uses over two parcels totaling approximately 505 acres in Mason Valley, east of US Highway 95A and accessed by Penrose Lane (APNs 014-201-07 and 014-201-30); PLZ-2025-025. (Hyperlinks to supplemental data can be clicked on [blue] or scrolled at pages 794 to 1097):

https://www.lyon-county.org/DocumentCenter/View/13597/BOCC-872025-Agenda

Lyon County, Nevada Assessor’s Office list of 2025 property owners of parcels on Penrose Lane in Mason Valley NV: (https://gsaportal.lyon-county.org/)

Learn more about Data Centers that already exist in the Western United States:

Thirsty for power and water, AI-crunching data centers sprout across the West

Click on page 1 of 24 to enlarge and read proposed “Specific Plan” rezoning request for Penrose Lane written by the Lyon County Community Development Department (further supplemental data included in pages 794 to 1097 of the agenda):

About the Fort Churchill generating station in Mason Valley NV:

https://www.nvenergy.com/publish/content/dam/nvenergy/brochures_arch/about-nvenergy/our-company/power-supply/Fort_Churchill_Fact_Sheet.pdf

LYON COUNTY BOARD OF COUNTY COMMISSIONERS
THURSDAY, August 7, 2025 @ 9:00 AM
LYON COUNTY ADMINISTRATIVE COMPLEX
27 S. MAIN STREET, YERINGTON, NV 89447
AGENDA: https://www.lyon-county.org/AgendaCenter/ViewFile/Agenda/_08072025-1869
Join Zoom Meeting: https://us02web.zoom.us/j/83368686463#success
Meeting ID: 833 6868 6463 / Passcode: 896135 Mobile: 1-253-215-8782 / 1-346-248-7799