Page 145 - Mines Facilities Plan

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additional gensets in the future, which could bring the maximum capacity of
two (2) additional gensets, which would bring the total capacity to 8.1 MW.
gensets installed. As a result, the ISOC generator plant can readily accept
In addition, it appears to be possible to add another PowerBlock with fi

the ISOC generator plant to 11.3 MW. Existing Conditions

a 0.87 power factor, Xcel Energy is able to supply up to an additional 5.5 MW
demand for the past year was 6.4 MW. Based on that demand and assuming
Substation. In 2018 a generator plant was installed as part of an Interruptible
The Mines campus is fed by an Xcel Energy electrical system from Lookout
The campus medium voltage electrical distribution system includes two (2)
Service Option Credit (ISOC), which allows Xcel Energy to shed the Mines
(gensets) were installed, providing a total capacity of 6.9 MW. The gensets
Loop 2A/2B primarily serves campus buildings south of 17th Street to 19th
are grouped into “PowerBlocks”, with each PowerBlock having capacity for
served by Mines’ ISOC generator plant and is disconnected from the Xcel
loops. Loop 1A/1B primarily serves campus buildings north of 17th Street.
As part of the ISOC project, a total of thirteen (13) engine-generator sets
five (5) gensets. PowerBlock #1 currently has three (3) of five (5) possible

ELECTRIC POWER load during periods of peak demand. During these times, the campus is Energy service. Street. Loop 2A/2B will serve the future campus expansion. Based on the 600A primary meter rating, the maximum capacity of Xcel Energy’s service to Mines is 13.7 MVA, and the campus peak electrical of load from the existing medium voltage service.