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10-Year Study Results California Resource Option. Study Concept Starting case: 2022 High Load (PC1-5) Increase WECC annual energy demand 8% Results in additional 12,000 GWh of RPS resource requirements (per statutes) Model added 12,000 GWh in regions throughout WECC (w/ transmission) Goal

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10 year study results california resource option
10-Year Study ResultsCalifornia Resource Option


Renewable options under high load cases the basics

Study Concept

Starting case: 2022 High Load (PC1-5)

Increase WECC annual energy demand 8%

Results in additional 12,000 GWh of RPS resource requirements (per statutes)

Model added 12,000 GWh in regions throughout WECC (w/ transmission)

Goal

Compare different resource and transmission options

Total (capital and production) cost comparisons

Will be shown at a later date

Renewable Options Under High Load CasesThe Basics


Increase WECC-wide load 8%

1

Add: 12,000 GWh to meet WECC RPS

2

3

Add transmission

For these regions


Increase WECC-wide load 8%

1

8%

8% increase to peak and energy

10%

10% decrease to energy

Higher Load = Additional RPS Energy


Add 12,000 GWh to meet WECC RPS

2

Extrapolation Method


Resource option studies breakdown of incremental 12 000 gwh
Resource Option StudiesBreakdown of Incremental 12,000 GWh

Wind Solar PV Solar Thermal Small Hydro Geothermal Biomass RPS


1- Check PRM

2 - Add CTs (if needed)

=

Higher load and new resources


PC1-5 High Load PRM Gap

1) Added CTs in 100 MW increments to make up this 11,426 MW PRM Gap

2) CT’s were adjusted in Renewable Options Under High Load studies



3 fewer CTs needed in Basin

This makes sense:

3,000 MW wind × 10% = 300 MW to peak = 3 fewer CTs


3

Add transmission

  • Transmission Expansion Projects

Path 8 Upgrade

MSTI + SWIP N

Selkirk – Bell – Ashe

Nicola – Chief Joe

Selkirk – Ashe DC

Selkirk – Buckley DC

WY-CO Intertie

TransWest Express

Zephyr A /B/C/D

High Plains Express

SSPG East

SSPG North

SSPG South

High Plains Express

None

Centennial West


Now to the results
Now to the results…

  • Resource assumption overview

  • Portfolio Case generation results (versus PC1-5 High Load)

  • Transmission projects overview

  • Expansion case generation results (versus PC1-5 High Load and Portfolio Case)

  • Path flow results - Reviewed duration plots for key WECC paths. Will show some that are interesting in this presentation.


California resource assumptions
CaliforniaResource Assumptions

Gates

+ 697

Tehachapi

+ 1078

+ 100

+ 60

Lugo

+ 646

+ 371

Imperial Valley

+299

+ 1121

Wind Solar PV Solar Thermal Small Hydro Geothermal Biomass RPS


AZ, NV, CA

Production cost decreased $413 M (2.4%)

Dump energy increased 3 GWh (.9%)

Emergency Energy decreased 0%

CO2 Emissions decreased 1.1%


Decrease from PC1

Increase from CC


Decrease from CC

No change


No change

Decrease from CC


No change

No change



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