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study results northwest firmed resource option
Study ResultsNorthwest Firmed Resource Option

This slide deck contains results from the 2012 TEPPC Study Program related to the Northwest Firmed Resource Option Studies. The generation results for the associated transmission expansion projects follow immediately along with flow information for the added transmission.

slide2

Hydro Firming

Modeling Goal

  • Compare different hydro dispatches in different wind conditions given various modeling techniques
  • Compare path flows and production costs
  • Implementation Steps
  • Start with 2022 PC23 NW Resource Option (+12,000 GWh)
  • Increase WECC annual energy demand 8%
  • Add 12,000 GWh of renewables to NW
  • Under the purview of high wind in a particular region, investigate how a nearby region’s hydro responds based on different types of modeling
  • Investigate how the changes listed above impact path flows
slide3

Renewable Options Under High Load

  • Firmed Cases

Increase WECC-wide load 8%

1

Hydro

Add: 12,000 GWh to meet WECC RPS

Gas

2

3

Add: firming resource

4

Pumped storage

Add transmission

For these regions

slide4

Increase WECC-wide load 8%

1

8%

8% increase to peak and energy

10%

10% decrease to energy

Higher Load = Additional RPS Energy

slide7

NW Firmed Resource Cases

  • Comparing Four Cases

PC1-5

High Load

PC23

NW Resource Option

PC27a

NW Firmed Resource

PC27b

NW Firmed Resource

Shrum

Shrum

Shrum

Shrum

Mica

Mica

Mica

Mica

Revelstoke

Revelstoke

Revelstoke

Revelstoke

+12,000 GWh

(mostly wind)

+12,000 GWh

(mostly wind)

+12,000 GWh

(mostly wind)

+12,000 GWh resources

No added resources

+12,000 GWh resources

+12,000 GWh resources

Standard HTC modeling

Standard HTC modeling

Fixed shape hydro from PC1-5 (no resources)

HTC modeling with price signals from a windy Northwest

Compare

Results

Generation

Hydro impact

Path Flows

Compare

Compare

slide8

AZ, OR, CA, WA

Production cost decreased $27 M (.15%)

Dump energy increased 397 GWh (93%)

Emergency Energy decreased 6%

CO2 Emissions decreased 0%

slide10

AL, BC

Production cost decreased $6 M (.032%)

Dump energy increased 80 GWh (19%)

Emergency Energy decreased 0%

CO2 Emissions decreased 0%

slide11

PC23 vs. PC27b

Normal hydro

NW $ Hydro

slide12

Production cost decreased $22 M (.125%)

Dump energy increased 478 GWh (1649%)

Emergency Energy decreased 6%

CO2 Emissions decreased 0%

slide13

PC27a vs. PC27b

Fixed hydro

NW $ hydro

slide16

S-N

Less S-N flow

Congestion

slide18

k

k

slide19

k

k

slide23

2-weeks in April

2-weeks in October