clean energy standard technical conference on energy … · clean energy standard technical...
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![Page 1: Clean Energy Standard Technical Conference on Energy … · Clean Energy Standard Technical Conference on Energy Storage . SolarCity Confidential Slide 2 2 1. Behind-the-meter solar+storage](https://reader031.vdocuments.site/reader031/viewer/2022022009/5ae893327f8b9a6d4f8fa9fe/html5/thumbnails/1.jpg)
May 26, 2016
Solar + Storage and Multi-Use Applications Clean Energy Standard
Technical Conference on Energy Storage
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SolarCity Confidential Slide 2 2
1. Behind-the-meter solar+storage can support “Multi-Use
Applications”, providing value to the bulk system, distribution
system, and customers, and supporting CES and REV goals.
2. Only a subset of Multi-Use Applications are commercially viable at
this time, due to various barriers.
3. A storage incentive could help animate the market in the near-term,
while these barriers are overcome and storage costs come down.
Agenda
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SolarCity Confidential Slide 3 3
Multi-Use Applications for Solar+Storage
Customer
Distribution Wholesale
Markets
Time of Use Bill Management
Demand Charge Reduction
Back-up Power
Increased solar self-consumption
Distribution Infrastructure deferral
Reactive Supply
Voltage Control
Frequency Response
Increased hosting capacity
Energy
Regulation
Contingency Reserve
Resource Adequacy
Flexible Capacity
Flexible Ramping
Solar+Storage can provide multiple services to the bulk system,
distribution system, and customers.
Enabling multi-use applications is crucial to support CES and REV.
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SolarCity Confidential Slide 4 4
Behind-the-meter resources can provide the most
types of values.
Source: “The Economics of Battery Storage”, Rocky Mountain Institute (RMI), October 2015
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SolarCity Confidential Slide 5 5
Solar+Storage delivers power at times
of peak demand.
Example projects:
‒ Kauaʻi Island Utility Cooperative, Hawaiʻi:
‒ 17 MW solar
‒ 13 MW / 52 MWh storage
‒ Connecticut Municipal Electric Energy
Cooperative:
‒ 13 MW solar
‒ 1.5 MW / 6 MWh storage
Current business model – Utility-scale Solar+Storage
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SolarCity Confidential Slide 6 6
DemandLogic systems reduce energy and demand charges.
Example project:
‒ Solar system size 4.7 MW
‒ Storage size 1MW/2MWh
Current business model – Commercial Solar+Storage
+
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SolarCity Confidential Slide 7 7
Current business model – Residential Solar+Storage
Smart Energy Homes and Buildings:
Commercially deployed in Hawaii for solar self-consumption
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SolarCity Confidential Slide 8 8
Current:
‒ Reduce customer energy and demand charges
‒ Solar self-consumption
‒ Customer backup power
Soon:
‒ + Participate in NYISO markets (capacity, ancillary services)
‒ + Reduce distribution peaks (non-wires alternative contracts and distribution-level demand response)
Next:
‒ + Smart energy rates
‒ + Support increased hosting capacity (load shifting, smart inverters)
‒ + Additional distribution services (VVO/CVR)
Behind-the-meter Solar+Storage business models
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SolarCity Confidential Slide 9 9
Multi-Use Applications Project Simulation 1
Current Capability: Customer Demand Optimization
Customer
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Ene
rgy
(MW
h)
Customer Demand Management (MWh) Battery Charge (MWh) Solar Energy (MWh) Battery SOC (MWh)
Customer
Demand Charge
Management
Battery Charge
from Solar
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SolarCity Confidential Slide 10 10
Multi-Use Applications Project Simulation 2 Near-term Plan:
Customer + Wholesale DR + Distribution Service
Customer
Distribution Services
Wholesale Markets
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Ene
rgy
(MW
h)
Battery Charge (MWh) Wholesale DR (MWh) Customer Demand Management(MWh)
Distribution Service (MWh) Solar Energy (MWh) Battery SOC (MWh)
Customer Demand Charge Management
High Wholesale Price – PDR Dispatch
Distribution Service – Circuit Contingency Relief
Battery Charge
from Solar
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SolarCity Confidential Slide 11 11
Rate Design
‒ Customer demand charge not aligned with system peaks
‒ TOU rates may not allow inter-period netting
Market Eligibility and Scheduling
‒ Restrictions on NEM + other markets
‒ Timing of markets may limit multi-use applications
Measurement & Verification
‒ Metering requirements
‒ Customer baseline vs. measured inverter output vs. hybrids
Interconnection
‒ Unclear rules for some storage applications
Permitting
Markets for some values do not exist yet
Barriers to full realization of multi-use applications
for solar+storage must be overcome
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SolarCity Confidential Slide 12 12
Full Battery
Cost
Grid Services
Revenue
Customer
Revenue Storage
Incentive
Full Battery
Cost
Grid Services
Revenue
Customer
Revenue No Storage
Incentive
Today – Incentive Required Future – Incentive Not Required
Illustrative Economics
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SolarCity Confidential Slide 13 13
Deployment of and experience with storage is crucial to support the
CES and REV, but currently viable market opportunities are limited.
A storage incentive can bridge the gap, while storage costs come
down, and multi-use applications are further developed.
Example model:
‒ Declining block incentives proposed by CPUC for SGIP revamp:
Recommendation:
Storage incentive to animate market
Source: CPUC Proposed Decision, Decision Revising the Self-Generation Incentive Program;
Rulemaking 12-11-005; May 16, 2016
Proposed Incentives for Energy Storage
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SolarCity Confidential Slide 14 14
1. Behind-the-meter solar+storage can support “Multi-Use
Applications”, providing value to the bulk system, distribution
system, and customers, and supporting CES and REV goals.
2. Only a subset of Multi-Use Applications are commercially viable at
this time, due to various barriers.
3. A storage incentive could help animate the market in the near-term,
while these barriers are overcome and storage costs come down.
Recap
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SolarCity Confidential Slide 15 15
Thank you