Flexible Renewable Storage Potential
55
MIST STORAGE FACILITY
Overview
• In operation since 1989
Storage capacity at Mist 16 Bcf
-
11 Bcf Core Utility
5 Bcf Interstate Storage Services
Unique, Valuable Asset
⚫ Limited storage options in Pacific Northwest
Part of utility's diverse, reliable gas supply strategy
Utility can recall Interstate portion for Core Utility demand
Optimize non-utility portion and share revenues with utility
customers
⚫ 5 Bcf under long-term high-value contracts
BCF
18
15
12
9
52063
30
BCF / Day
0.60
0.50
0.40
0.30
0.20
0.10
0.00
Mist Storage Capacity
1998
2000
T
T
T
T
2002
2004
2006
T
2008
2010
2012
T
T
2014
Mist Storage Deliverability
T
T
2016
2018
T
2020
1998
2000
2002
2004
2006
2008
2010
2012
■ Utility
■Utility Recall
■Interstate
2014
2016
2018
2020
NW NaturalⓇView entire presentation