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February 13, 1981
Jerry Canning, Manager
Electric System Planning
Sierra Pacific Power Company
P.O. Bos 10100
Kmo, Nevada 89510
Dear Jerry:
Thank you for tseetlng with me on February 10, 1981, to dlacuae the
mutual benefits end problems of wheeling hydro power fron the California
eource of ths Friant Daa to the Trocfece-Ponner Public Utility Diatrict.
Thia ia a abort sucnary of tho sa^or point* we diacusaed.
PC&E continues to infons Sierra that there sre transmission and
trcttofenner limitations between the PC4B and Hierra systcn«. The problem
rencrally centera ercur.d the carrying capacity of the tvo 120,000 volt
linen fioinr: vest fron- Ponr.er Surnsit to the threw Power Plant and tho three
120,000 volt line* that continue from Pnrct down to Rio OBO Sub Station
near 8«CT«aasto. tGtt has put a licit of 108 riw on the tie between Sierra
and PC&E. Thia is fire capacity end the energy i« scheduled by requeot
frcra your dispatchers.
Sierra has looked st several alternatives for increasing their trans-
ir.lsaiun line capacity into California vhieii include increasing the capacity
of CKitting lines, constructing two 500 kv lines fron northeast Kevida
ccroas Nevada into California to supply PCSS with 1500 to 2000 t*» of coal-
fir^J powor, un-J coma 1 met in r, n 345 kv line frora Nevada over Echo fonnit
«lor.g US liipiiViiy 50.
You also discussed in rach detail the loop flow problems c/",«aed *y the
large amounts of generation located in the Pacific Northwest and Wyoming
with the general load center on the loop located in Southern Oiifomi*.
You illustrated how the ties through Sierra's system transmitted additional
capacity with the tie between you end PCSE trfnsnittinjt aa mich />a ISO rtr.
You also indicated that PCSE tiay have ao«e deeiees to discontinue the tie
between Sierra end PC4E because of the physical limitations.
Also, your discussions with Western Area Power Administration hava
contirurd alonj the lines where Sierra would swap energy for a portion of
the 102 eiw that WAP A ia presently marketing.
I
Jerry Canning Page 2 February 13, 1981
u n„.n,r sierra would aid *ai .upport
Of particular interest to T™*"-^"*^'™^. iueh a. th. Pri.nt
Truck..', effort, to ..cur. a pw.t «**,*£ 'J^ „ch.n,e the .upply
Power Authority or WAPA. A™n«Ir~ supply. Al.o. the arr.nRe.nent. t'SSK'SWS {.ITS fflU-A ~~
Sinc.rely your.,
Kenneth B. Peters
Office H<ra*g*t nn^
Pen?or r.nginccr
KBP/cl
Roberta iiuber
Doubles Holt,
Tiueke^-tanner PUD
Truckee-Uonnor PUD
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