Municipal Services Committee and Environmental Advisory Committee Meeting
September 10, 2024
Development of an Optimized
Strategic Plan for Pasadena Water
and Power
Nick Schlag, Partner
Mike Sontag, Associate Director
Nathan Lee, Sr. Managing Consultant
Michaela Levine, Managing Consultant
2 1. General project status update
2. Framing the decarbonization challenge
3. Highlights from preparatory studies
• Local Solar & Storage
• New & Emerging Technologies
4. Proposed plan for portfolio development
Agenda
3 Phase 1
Preparatory Studies
Identify and characterize all
potential resource options
Phase 2
Portfolio Development
Use detailed power system
modeling to construct multiple
portfolios that meet clean
energy goals and maintain
reliability
Phase 3
Impact Assessment
Calculate cost metrics;
identify feasibility concerns,
dependencies, and risks of
each portfolio
Result
Optimized Strategic Plan
Informed by technical
analysis, develop an action
plan.Distributed Solar
and Storage
(in progress)
New & Emerging
Tech
(in progress)
Demand Response
+ Flex Loads
(in progress)
Transmission
Options
(on deck)
Glenarm
Conversion/
Replacement
(on deck)
Long-Term
Capacity
Expansion
(on deck)
Production Cost
Modeling
Distribution
System Analysis
Cost Impacts
Optimized Strategic Plan: Study Workflow
Action Plan/
Final Report
Technical Analysis Synthesis
Framing the Decarbonization
Challenge
5 Since filing the 2023 IRP , PWP has
secured contracts with new carbon-
free resources expected online before
2030:
• Solar: +144 MW
• Storage: +100 MW
• Wind: +20 MW
• Geothermal: +35 MW
Newly contracted resources support
PWP’s progress towards the carbon-
free goal of Resolution 9977:
Updates to Pasadena Water & Power’s Resource Portfolio Since 2023 IRP
Nuc
Coal
Natural Gas HydroGeothermal
Wind
Solar
Storage
0 100
200
300
400
500
600
700
2024 Existing Resource
Portfolio
2030 Existing &
Contracted Resources
(2023 IRP)
2030 Existing &
Contracted Resources
(OSP)
Installed Capacity (MW)
Metric 2024 2030 (Exp)
Metric 1 58% 86%
Metric 2 58% 78%
Metric 3 25% 83%
As defined on PWP’s Clean Energy Tracker, Metric 1 = Senate Bill 100; Metric 2 = Carbon-Free Generation; Metric 3 = Resolution 9977 Goal Does not include
generic resources
selected in IRP
portfolio analysis
Current Resource
Portfolio
Owned & Contracted Resources Online by 2030
As of 2023 IRP Filing As of Today
6 Balance of Carbon-Free Energy Resources based on Currently Executed Contracts
Hourly Carbon-Free Electricity vs. Hourly Load
0% 25% 50% 75% 100% 125% 150% 175% 200%
2030 Carbon-Free Electricity Supply (Executed Contracts Only) Additions: Coso Geothermal (11 MW), Geysers Geothermal (25 MW), Sapphire Solar/BESS (39 MW/20 MW), Bonanza Solar/BESS (105 MW/55MW), Glenarm BESS (25 MW), Calwind (20 MW)
2025 Carbon-Free Electricity Supply
Jan 1 Day of Year Dec 31
12am
12pm
12am
12am
12pm
12am
Jan 1 Day of Year Dec 31
Not an OSP result – based on data underlying metrics presented by PWP to MSC July 9 25%
annual load
served by
carbon-free
electricity
(Metric 3)
83%
annual load
served by
carbon-free
electricity
(Metric 3)
7 CAISO Grid Conditions, April 2024
Renewable resources – particularly solar PV –
have scaled rapidly in the past decade, already
causing profound impacts on how the grid
operates and the value of energy at different
times of day and throughout the year
Relative abundance of renewable energy
during spring daylight hours results in
curtailment and negative pricing, highlighting
the importance of resource diversity in state’s
continued efforts to decarbonize
Deployment of Renewables in California Impacting Grid
Operations
0 2
4 6
8 10
12 14
16 18
20 Wind & Solar Availability (GW)
-5
0 5
10 15
20 25
30 Net Load (GW)
-$80
-$60
-$40
-$20
$0
$20
$40
$60
$80
Day-Ahead Price ($/MWh)
0 1
2 3
4 5
6 7
8 9
Renewable Curtailment (GW)
Large quantities of wind &
solar…
…cause low net loads during
middle of the day…
…resulting in curtailment of
renewables…
…and driving market prices to
levels below zero
Highlights from Preparatory
Studies (Phase 1)
9 Phase 1
Preparatory Studies
Identify and characterize all
potential resource options
Phase 2
Portfolio Development
Use detailed power system
modeling to construct multiple
portfolios that meet clean
energy goals and maintain
reliability
Phase 3
Impact Assessment
Calculate cost metrics;
identify feasibility concerns,
dependencies, and risks of
each portfolio
Result
Optimized Strategic Plan
Informed by technical
analysis, develop an action
plan.
Demand Response
+ Flex Loads
(in progress)
Transmission
Options
(on deck)
Glenarm
Conversion/
Replacement
(on deck)
Long-Term
Capacity
Expansion
(on deck)
Production Cost
Modeling
Distribution
System Analysis
Cost Impacts
Highlights from Preparatory Studies
Action Plan/
Final Report
Technical Analysis Synthesis
Distributed Solar
and Storage
(in progress)
New & Emerging
Tech
(in progress)
Draft results for local solar technical potential (including rooftop, parking canopy, and ground mount)
Summary of findings regarding (a) mature technologies, (b) mid- and long-duration storage resources, and (c) hydrogen 10 Despite land constraints, technical
potential for local solar within Pasadena
footprint exceeds 500 MW-dc*:
Key insight: the amount of distributed
solar included in the OSP will be primarily
determined by the needs of the grid
and
economics rather than by constraints on
available space
Solar Technical Potential within Pasadena Water and Power Rooftop, Parking Canopy, and Ground-Mounted Solar
*These values represent the maximum capacity available for development in a given region and do not consider the economic or market viability, historical landmark status, or other physical conditions that may restrict installation.
Parking Canopy: 340 MW-dc
Rooftop: 220 MW-dc
Ground-Mounted: 10 MW-dc
10 MW Ground-Mounted
280 MW
Private Parking Canopy
60 MW
Municipal Parking Canopy
150 MW
Residential Rooftop
60 MW
Commercial Rooftop
10 MW Municipal Rooftop
11 A wide range of contracting and compensation
mechanisms can support development of
distributed solar resources
Further analysis in OSP study process will
explore…
• …how different electric rate designs impact level of
customer adoption of solar and storage (upcoming
analysis in Local Solar & Storage Study)
• …how different combinations of customer-owned,
utility-owned, and contracted solar impact total
resource costs and average customer bills (Cost
Impacts Study)
Multiple Mechanisms to Procure Local Solar and Storage
Resources
Naturally Occurring
Customer Adoption
• Net Energy Metering
• Net Energy Billing
• Feed-In Tariff
• Other Options…
Direct Install on
Municipally Owned
Properties
• Municipal Ownership
• Lease & Power Purchase
Agreement with Third-
Party Owner
Contracted
Development on
Private Property
• Power Purchase
Agreement with Third-
Party Owner
Multiple Mechanisms to Develop Local Solar
& Storage Resources
12 Highlights from New & Emerging Technologies Study
Mature Scalable Carbon-Free
Technologies
Mid- and Long-Duration Storage
Resources Hydrogen Combustion
Technologies Solar PV , Wind, Geothermal, Lithium-Ion
Batteries
Compressed Air, Liquid Air, Sensible Heat,
Aqueous Flow, Hybrid Flow, Metal Anode
Green Hydrogen Production, Transportation,
and Combustion
Commercial
Readiness
All options widely commercially available Many technologies are in various stages of R&D; pilot projects currently under
development; commercialization likely in 2030s
Combustion of 100% H2 not yet demonstrated;
multiple utilities (incl. LADWP and GWP)
include H2 in plans in mid- to late-2030s
Cost
Considerations
Despite recent inflationary pressures, costs are
considerably lower than five years ago
Current costs are prohibitively high; lack of
technological maturity translates to high
uncertainty for future cost; early movers likely
to pay higher costs to develop first-of-a-kind
projects
Hydrogen storage and transport costs are
uncertain and largely depend on the scale and
site; IRA tax credits (45V) for green hydrogen
can help mitigate costs
Other
Considerations
Saturation effects:
value subject to decline
with increasing penetrations (e.g. duck curve,
curtailment, declining marginal ELCC)
Land use: longer duration storage technologies
are typically less energy dense and require
larger footprints; some are site-specific (not an
option for local development)
Supporting infrastructure: H2 delivery requires
upstream production & transportation
infrastructure, likely at regional scale
Public Safety: need to address concerns
regarding leakage, NOx emissions
Key Signposts Negative pricing: increasing frequency of CAISO prices below zero poses market risk to
utilities dependent on off-system sales
Utility pilot projects: PSE, SMUD, SRP , Xcel,
Georgia Power currently developing LDES pilots
AB 1373: CPUC directed DWR to procure 1 GW
multi-day storage by 2031
ARCHES H2 Hub: statewide public-private
partnership with $1.2 billion federal funding to
develop foundational hydrogen infrastructure
by 2030
13 Highlights from New & Emerging Technologies Study
Mature Scalable Carbon-Free
Technologies
Mid- and Long-Duration Storage
Resources Hydrogen Combustion
Technologies Solar PV , Wind, Geothermal, Lithium-Ion
Batteries
Compressed Air, Liquid Air, Sensible Heat,
Aqueous Flow, Hybrid Flow, Metal Anode
Green Hydrogen Production, Transportation,
and Combustion
Commercial
Readiness
All options widely commercially available Many technologies are in various stages of R&D; pilot projects currently under
development; commercialization likely in 2030s
Combustion of 100% H2 not yet demonstrated;
multiple utilities (incl. LADWP and GWP)
include H2 in plans in mid- to late-2030s
Cost
Considerations
Despite recent inflationary pressures, costs are
considerably lower than five years ago
Current costs are prohibitively high; lack of
technological maturity translates to high
uncertainty for future cost; early movers likely
to pay higher costs to develop first-of-a-kind
projects
Hydrogen storage and transport costs are
uncertain and largely depend on the scale and
site; IRA tax credits (45V) for green hydrogen
can help mitigate costs
Other
Considerations
Saturation effects:
value subject to decline
with increasing penetrations (e.g. duck curve,
curtailment, declining marginal ELCC)
Land use: longer duration storage technologies
are typically less energy dense and require
larger footprints; some are site-specific (not an
option for local development)
Supporting infrastructure: H2 delivery requires
upstream production & transportation
infrastructure, likely at regional scale
Public Safety: need to address concerns
regarding leakage, NOx emissions
Key Signposts Negative pricing: increasing frequency of prices below zero poses market risk to utilities
dependent on off-system sales
Utility pilot projects: PSE, SMUD, SRP , Xcel,
Georgia Power currently developing LDES pilots
AB 1373: CPUC directed DWR to procure 1 GW
multi-day storage by 2031
ARCHES H2 Hub: statewide public-private
partnership with $1.2 billion federal funding to
develop foundational hydrogen infrastructure
by 2030
14 Highlights from New & Emerging Technologies Study
Mature Scalable Carbon-Free
Technologies
Mid- and Long-Duration Storage
Resources Hydrogen Combustion
Technologies Solar PV , Wind, Geothermal, Lithium-Ion
Batteries
Compressed Air, Liquid Air, Sensible Heat,
Aqueous Flow, Hybrid Flow, Metal Anode
Green Hydrogen Production, Transportation,
and Combustion
Commercial
Readiness
All options widely commercially available Many technologies are in various stages of R&D; pilot projects currently under
development; commercialization likely in 2030s
Combustion of 100% H2 not yet demonstrated;
multiple utilities (incl. LADWP and GWP)
include H2 in plans in mid- to late-2030s
Cost
Considerations
Despite recent inflationary pressures, costs are
considerably lower than five years ago
Current costs are prohibitively high; lack of
technological maturity translates to high
uncertainty for future cost; early movers likely
to pay higher costs to develop first-of-a-kind
projects
Hydrogen storage and transport costs are
uncertain and largely depend on the scale and
site; IRA tax credits (45V) for green hydrogen
can help mitigate costs
Other
Considerations
Saturation effects:
value subject to decline
with increasing penetrations (e.g. duck curve,
curtailment, declining marginal ELCC)
Land use: longer duration storage technologies
are typically less energy dense and require
larger footprints; some are site-specific (not an
option for local development)
Supporting infrastructure: H2 delivery requires
upstream production & transportation
infrastructure, likely at regional scale
Public Safety: need to address concerns
regarding leakage, NOx emissions
Key Signposts Negative pricing: increasing frequency of prices below zero poses market risk to utilities
dependent on off-system sales
Utility pilot projects: PSE, SMUD, SRP , Xcel,
Georgia Power currently developing LDES pilots
AB 1373: CPUC directed DWR to procure 1 GW
multi-day storage by 2031
ARCHES H2 Hub: statewide public-private
partnership with $1.2 billion federal funding to
develop foundational hydrogen infrastructure
by 2030
15 Highlights from New & Emerging Technologies Study
Mature Scalable Carbon-Free
Technologies
Mid- and Long-Duration Storage
Resources Hydrogen Combustion
Technologies Solar PV , Wind, Geothermal, Lithium-Ion
Batteries
Compressed Air, Liquid Air, Sensible Heat,
Aqueous Flow, Hybrid Flow, Metal Anode
Green Hydrogen Production, Transportation,
and Combustion
Commercial
Readiness
All options widely commercially available Many technologies are in various stages of R&D; pilot projects currently under
development; commercialization likely in 2030s
Combustion of 100% H2 not yet demonstrated;
multiple utilities (incl. LADWP and GWP)
include H2 in plans in mid- to late-2030s
Cost
Considerations
Despite recent inflationary pressures, costs are
considerably lower than five years ago
Current costs are prohibitively high; lack of
technological maturity translates to high
uncertainty for future cost; early movers likely
to pay higher costs to develop first-of-a-kind
projects
Hydrogen storage and transport costs are
uncertain and largely depend on the scale and
site; IRA tax credits (45V) for green hydrogen
can help mitigate costs
Other
Considerations
Saturation effects:
value subject to decline
with increasing penetrations (e.g. duck curve,
curtailment, declining marginal ELCC)
Land use: longer duration storage technologies
are typically less energy dense and require
larger footprints; some are site-specific (not an
option for local development)
Supporting infrastructure: H2 delivery requires
upstream production & transportation
infrastructure, likely at regional scale
Public Safety: need to address concerns
regarding leakage, NOx emissions
Key Signposts Negative pricing: increasing frequency of prices below zero poses market risk to utilities
dependent on off-system sales
Utility pilot projects: PSE, SMUD, SRP , Xcel,
Georgia Power currently developing LDES pilots
AB 1373: CPUC directed DWR to procure 1 GW
multi-day storage by 2031
ARCHES H2 Hub: statewide public-private
partnership with $1.2 billion federal funding to
develop foundational hydrogen infrastructure
by 2030
Other resources reviewed in New & Emerging Technologies study: enhanced geothermal, offshore wind, hydrogen fuel cells, concentrated solar power, advanced nuclear Plans for Portfolio Analysis
(Phase 2)
17 Phase 1
Preparatory Studies
Identify and characterize all
potential resource options
Phase 2
Portfolio Development
Use detailed power system
modeling to construct multiple
portfolios that meet clean
energy goals and maintain
reliability
Phase 3
Impact Assessment
Calculate cost metrics;
identify feasibility concerns,
dependencies, and risks of
each portfolio
Result
Optimized Strategic Plan
Informed by technical
analysis, develop an action
plan.
Demand Response
+ Flex Loads
(in progress)
Transmission
Options
(on deck)
Production Cost
Modeling
Distribution
System Analysis
Cost Impacts
Highlights from Preparatory Studies
Action Plan/
Final Report
Technical Analysis Synthesis
Distributed Solar
and Storage
(in progress)
New & Emerging
Tech
(in progress)
Glenarm
Conversion/
Replacement
(on deck)
Long-Term
Capacity
Expansion
(on deck)
Loss of load probability modeling used to conduct stochastic simulations of load and renewable variability, generator and transmission outages across 1000 “draws, ” each representing a plausible calendar year of conditions
Co-optimization of new resource investments and system
operations to minimize costs while meeting clean energy targets and reliability requirements
18 OSP supporting studies focus on development and analysis of “portfolios”: unique combinations of resources to meet PWP future needs
Goal of developing and analyzing multiple portfolios is not to select a single one as the Optimized Strategic Plan, but to synthesize learnings across all cases to inform creation of an OSP Multiple Portfolios
Developed and
Analyzed
Varying technology sets
Varying milestones
Role of Portfolio Analysis in Development of the Optimized Strategic Plan
Results of Technical
Analysis Synthesized
Common themes across
portfolios
Relative cost impacts
“Least regrets” actions
Key risks & uncertainties
Path dependencies, tools to
preserve optionality
Optimized Strategic
Plan Created
“…a roadmap that lays out the
key steps and future decision
points that will best position
PWP to achieve its goal to
source all electricity from
carbon-free sources by the end
of 2030 while maintaining
reliability and limiting cost
impacts to customers”
19 New Resource OptionsTechnology
Unspecified PurchasesGlenarm TransitionBy 2035Available by 2030PortfolioSet State PolicyMature T ech
Only
Li-ion Retained
Offset by unspecified sales
Summary of Portfolio Assumptions
Description • All statutory clean energy requirements (e.g. SB100) met or exceeded • CAISO resource adequacy requirements satisfied
• Only “mature” technologies included in portfolio
Purpose • Quantify the remaining gaps between PWP’s current portfolio and Resolution 9977 goals
• Provide a point of reference to measure cost impacts of alternative portfolios
Legend: Solar PV Wind Geothermal Flexible Loads Battery Transmission Expansion Long Duration StorageLi-ion LDES 20 New Resource OptionsTechnology
Unspecified PurchasesGlenarm TransitionBy 2035Available by 2030PortfolioSet State PolicyMature T ech
Only
Accelerated
DERs
Li-ion
Li-ion
Retained
Retained (limited use)*
Offset by unspecified sales
Offset by unspecified sales
Summary of Portfolio Assumptions
Description • All characteristics of “Mature Tech - State Policy” portfolio • Development of local solar, storage, and demand-side resources accelerated to limit use of Glenarm to emergency conditions only • Procure renewable natural gas as needed to fuel Glenarm during emergency conditions (*)
Purpose • Focus on how incremental distributed energy resources could advance PWP towards carbon-free goal by reducing frequency of Glenarm operations while mitigating reliability and regulatory risks associated with a complete retirement
Legend: Solar PV Wind Geothermal Flexible Loads Battery Transmission Expansion Long Duration StorageLi-ion LDES 21 New Resource OptionsTechnology
Unspecified PurchasesGlenarm TransitionBy 2035Available by 2030PortfolioSet State PolicyMature T ech
Only
Accelerated
DERs
Carbon-Free
Owned/Contracted
Li-ion
Li-ion
Li-ion
Retained
Retained (limited use)*
Replaced by end of 2030
Offset by unspecified sales
Offset by unspecified sales
Offset by unspecified sales
Summary of Portfolio Assumptions
Description • All characteristics of “Mature Tech - State Policy” portfolio • Additional local solar, storage, and demand-side resources included at level needed to fully replace generation capability of Glenarm Purpose • Quantify need for distributed energy resources to replace reliability contribution of Glenarm
Legend: Solar PV Wind Geothermal Flexible Loads Battery Transmission Expansion Long Duration StorageLi-ion LDES 22 New Resource OptionsTechnology
Unspecified PurchasesGlenarm TransitionBy 2035Available by 2030PortfolioSet State PolicyMature T ech
Only
Accelerated
DERs
Carbon-Free
Owned/Contracted
Carbon-Free
24x7
Li-ion
Li-ion
Li-ion
Li-ion
Retained
Retained (limited use)*
Replaced by end of 2030
Replaced by end of 2030
Offset by unspecified sales
Offset by unspecified sales
Offset by unspecified sales
Eliminated by end of 2030
Summary of Portfolio Assumptions
Description • All characteristics of “Mature Tech - Carbon-Free Owned/Contracted” portfolio
• Additional local & external resources added to eliminate all reliance on unspecified market purchases from CAISO
Purpose • Quantify resource needs associated with meeting PWP’s needs with specified carbon-free resources on a 24x7 basis throughout the year Legend: Solar PV Wind Geothermal Flexible Loads Battery Transmission Expansion Long Duration StorageLi-ion LDES 23 Legend: Solar PV Wind Geothermal Flexible Loads Battery Transmission Expansion Long Duration StorageLi-ion LDES New Resource OptionsTechnology
Unspecified PurchasesGlenarm TransitionBy 2035Available by 2030PortfolioSet State PolicyMature T ech
Only
Accelerated
DERs
Carbon-Free
Owned/Contracted
Carbon-Free
24x7
Carbon-Free
Owned/Contracted
Mature
Te ch + H2
Carbon-Free
24x7
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Retained
Retained (limited use)*
Replaced by end of 2030
Replaced by end of 2030
Converted to H2 by end of 2030
Converted to H2 by end of 2030
Offset by unspecified sales
Offset by unspecified sales
Offset by unspecified sales
Eliminated by end of 2030
Offset by unspecified sales
Eliminated by end of 2030
H2
H2
New Resource OptionsTechnology
Unspecified PurchasesGlenarm TransitionBy 2035Available by 2030PortfolioSet State PolicyMature T ech
Only
Accelerated
DERs
Carbon-Free
Owned/Contracted
Carbon-Free
24x7
Carbon-Free
Owned/Contracted
Mature
Te ch + H2
Carbon-Free
24x7
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Retained
Retained (limited use)*
Replaced by end of 2030
Replaced by end of 2030
Converted to H2 by end of 2030
Converted to H2 by end of 2030
Offset by unspecified sales
Offset by unspecified sales
Offset by unspecified sales
Eliminated by end of 2030
Offset by unspecified sales
Eliminated by end of 2030
H2
H2
Summary of Portfolio Assumptions
Description • Alternatives to “Mature Tech Only” portfolios • Glenarm Power Plant converted to hydrogen fuel by 2030 (rather than replacement with a portfolio of local resources)
Purpose • Study how a transition to hydrogen as a clean firm fuel by 2030 could provide PWP with an alternative pathway to achieve Resolution 9977 goals
24 New Resource OptionsTechnology
Unspecified PurchasesGlenarm TransitionBy 2035Available by 2030PortfolioSet State PolicyMature T ech
Only
Accelerated
DERs
Carbon-Free
Owned/Contracted
Carbon-Free
24x7
Carbon-Free
Owned/Contracted
Mature
Te ch + H2
Carbon-Free
24x7
Carbon-Free
Owned/Contracted
Mature
Te ch + LDES
Carbon-Free
24x7
Li-ion
LDES
LDES
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Retained
Retained (limited use)*
Replaced by end of 2030
Replaced by end of 2030
Converted to H2 by end of 2030
Converted to H2 by end of 2030
Replaced by 2035 *
Replaced by 2035 *
Offset by unspecified sales
Offset by unspecified sales
Offset by unspecified sales
Eliminated by end of 2030
Offset by unspecified sales
Eliminated by end of 2030
Offset by unspecified sales
Eliminated by end of 2035
H2
H2
Summary of Portfolio Assumptions
Description • Alternatives to “Mature Tech Only” portfolios • Glenarm Power Plant replaced by local resources – including solar, batteries, load flexibility, and long duration energy storage – by 2035 • Timing of replacement staged to coincide with upgrades to transformers at Goodrich receiving station
• Procure renewable natural gas as needed to fuel Glenarm during emergency conditions until 2035 (*)
Purpose • Study how emergence of long-duration storage in early 2030s could provide PWP new opportunities if achievement of Resolution 9977 goals occurs on a slower schedule
Legend: Solar PV Wind Geothermal Flexible Loads Battery Transmission Expansion Long Duration StorageLi-ion LDES 25 Legend: Solar PV Wind Geothermal Flexible Loads Battery Transmission Expansion Long Duration StorageLi-ion LDES Summary of Portfolio Assumptions
New Resource OptionsTechnology
Unspecified PurchasesGlenarm TransitionBy 2035Available by 2030PortfolioSet State PolicyMature T ech
Only
Accelerated
DERs
Carbon-Free
Owned/Contracted
Carbon-Free
24x7
Carbon-Free
Owned/Contracted
Mature
Te ch + H2
Carbon-Free
24x7
Carbon-Free
Owned/Contracted
Mature
Te ch + LDES
Carbon-Free
24x7
Li-ion
LDES
LDES
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Li-ion
Retained
Retained (limited use)*
Replaced by end of 2030
Replaced by end of 2030
Converted to H2 by end of 2030
Converted to H2 by end of 2030
Replaced by 2035 *
Replaced by 2035 *
Offset by unspecified sales
Offset by unspecified sales
Offset by unspecified sales
Eliminated by end of 2030
Offset by unspecified sales
Eliminated by end of 2030
Offset by unspecified sales
Eliminated by end of 2035
H2
H2
26 Comparative analysis across the suite of portfolios will provide insights into multiple questions to guide development of the OSP:
1. What are the characteristics of PWP’s remaining resource needs given its current portfolio and the goals of Resolution 9977?
2. How well-suited are different generation technologies and demand- side resources to filling those remaining needs?
3. What portfolios of resources would enable PWP to meet Resolution 9977 goals, including reliability?
4. How would the emergence of new technologies present alternative options to meet Resolution 9977 resource needs?
5. How do different portfolios consistent with Resolution 9977 objectives impact costs to PWP customers?
A holistic look across a range of portfolios will enable development of coordinated strategies reflected in the final OSP
Next steps:
Finalize results of Preparatory
Studies
Begin detailed power system
modeling needed for Portfolio
Development
Host first community meeting on
September 26
Conclusions & Next Steps
Thank You
Nick Schlag, [email protected]