Ex 201, p.1 Mon Curtailment Sum.pdf

Monsa
nto
Soda
Spring
s Plant
Curtail
ment
History

Year Total Curtailment
(kWh)
System Curtailment
(kWh)
Economic Curtailment
(kWh)
Premium paid
above contract
price ($)
Operating
Curtailm
1986 329,963 259,963 70,000 $390
1987 7,481,460 1,297,368 6,184,092 $31,435
1988 109,238,360 973,113 108,265,247 $622,100
1989 98,853,300 705,000 98,148,300 $923,368
1990 18,992,250 787,250 18,205,000 $145,085
1991 16,815,080 791,080 16,024,000 $102,636
1992 138,074,680 459,680 137,615,000 $700,755
1993 148,072,620 4,381,620 143,691,000 $801,032
1994 100,580,820 2,951,820 97,629,000 $401,983
1995 * 5,687,780 37,780 5,650,000 $4,140
1996 0 0
1997 0 0
1998 49,940 49,940
1999 37,010 37,010
2000 ** 1,864,967 219,483
2001 ** 2,268,120 0
YTD
2002
** 73,816 0

Note * 1995 Contract
eliminated
economic
curtailment (Nov.1
1995)

** Signed additional
Operating Reserve
curtailment
contracts

System Curtailment
is defined as

interruptions
needed to maintain
the integrity of the
electrical grid.
(No power is
available due to
system problems)

Economic
Curtailment is
defined as
interruptions that
occur when the
price of power
reaches a pre-
defined

(trigger) price.
(Power is available
at a higher price)

Premium is defined
as the difference
between the
contract rate and
the actual market
price paid to buy
through

the curtailment.

Operating Reserve
purchased by
PacifiCorp in 2000,
2001, and 2002
persuant to short
term agreements.