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ON IT Energy Storage for the Grid New York Association for Energy Economics (NYAEE) July 25, 2013 1
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Energy Storage for the Grid
New York Association for Energy Economics (NYAEE)
July 25, 2013
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Con Edison in the Forefront of Energy Storage
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• Proposed in 1962
• 2000 MW
• Pumped Storage
• Abandoned
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1 24
Hou
rly D
eman
d (M
W)
Hour of event day Baseline With DR
Load Shaping and Demand Control
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Provide Safe, Reliable, and Cost Effective Energy Storage (ES) Solutions for the Grid
Presentation Overview
• Review of ES Technology
• High Valued Applications
• Overview of Con Edison ES Projects
• Location Impacts
• What Utilities Need to Integrate ES Into the Grid 4
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Factors that Impact The Value of ES:
Technology
Location Application
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Energy Storage Technologies
• Lead-Acid
• Lithium ion
• Flow batteries
• Molten salt batteries
• Flywheel
• CAES
• Pumped Hydro
• Thermal Storage
Varied Options
Pre Commercial
Specs and Protocols not Established
Long Term Reliability not Demonstrated
Cost Effective - Not Yet
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LI-ION BATTERY PACK COST AND PRODUCTION
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Cost is One Consideration
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Cost
Power Density
Energy Density Safety
Cycle Life
Ideal Battery
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1© 2013 Electric Power Research Institute, Inc. All rights reserved.
Bulk Storage
The Roles of Storage on the Grid
Bulk Storage
DistributedStorage
Edge ofGrid
Storage Edge ofGrid
Storage
Customer Premise
StorageCustomer Premise
Storage9
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Grid Application
• Power quality
• Power reliability
• Bulk storage
• Volt/VAR control
• Upgrade deferral
• Peak shaving
• Load leveling
• Community energy storage
• Frequency regulation
• Spinning reserves
• Emergency backup power
• Wind firming
• Wind integration
• PV integration
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4,000
4,600
5,200
5,800
6,400
7,000
7,600
8,200
8,800
9,400
10,000
10,600
11,200
11,800
12,400
13,000
13,600
0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 Number of Hours
4,447 5,001 6,001 7,001 8,001 9,001
10,001 11,001 12,001 13,001
5,000 6,000 7,000 8,000 9,000
10,000 11,000 12,000 13,000 13,189
664 1,596 2,102 2,587 883 517 255 120 29 7
Load Range (MW) Number of Hours
CECONY Service Area Load Duration Curve
System is planned to: Customer, Network, & Coincident Transmission Peaks
• Solar helps but it’s not the answer
• Solar is generally coincident with the system (transmission) peak
• Solar is not coincident with residential customer peak
• Experience shows little to no solar impact on demand portion of C&I customers bills
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Load Demand and Projections Lo
ad(M
W)
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• Demand Charges: $20 - $40/kW/month
• Energy Supply: $0.03 - $0.08/kWhr
• Demand Response
– ConEd $5/kW/month
– NYISO $12/kW/month
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Delivery Rates and Cost Recovery
Some Electric Rate Components
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Con Edison Energy Storage Projects
• Nickel Zinc Flow Assisted Battery
– CCNY Energy Institute
• Storage integrated with PV
– DOE Stimulus Grant Demonstration Project
• Transportable Li-Ion Energy Storage System
– Electrovaya and NYSERDA
• EOS Zinc Air Demonstration
– NYSERDA Project to Demonstrate Low Cost, Safe, Reliable and Long
Life Battery
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CCNY Nickel Zinc Battery
• Flow Assisted Zinc Anode Battery
• Reduces Dentrites
• 100 KWh integrated into building service
• Zinc is cheap, nontoxic and widely accessible
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Electric Vehicle Charger, PV & Battery Storage Integration
• GreenStations integrating – Electric Vehicle charging
– Battery charging and discharging
– Photovoltaics
• Peak Shaving
• Monitoring and control of multiple GreenStations via Network Operations Center (NOC) – Near real-time energy and demand monitoring
– Near real-time targeted demand response
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7 Eleven –Queens
GreenStationTM 40kW, 150kWh, Smart Controller, with L2 EV
charging
GridSynergy TM Execution
Solar Panels on roof EV Charging Level 2
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Peak shaving example
Avoided
Actual Panel Load
Battery
Charge / Discharge
Solar PV 10kW system
*First SSGU system of its kind installed in Queens, NY
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Transportable Energy Storage System (TESS) Demonstration
Transportable Energy Storage System.
HVAC
Battery Room
Electrical Control Room (contains
PCS/transformer)
Trailer Bed
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800 kWhr Storage Capacity, 500 kW Power Rating
40 x 8 x 12 ½ ft trailer weighing 60,000 lbs
Batteries, PCS, HVAC, Fire detection/suppression systems integrated within a transportable container
Connection at customer voltage levels
Programmable to charge off peak and discharge during peak load periods
Fire Suppressant Tank
Co-funding from NYSERDA, Electrovaya and Con Edison
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TESS Applications and Benefits
• Grid support and emergency backup
• Infrastructure Upgrade Deferral – e.g. Distribution Transformer
• Sensitive sites - No emissions, Less noise
• Energy Cost Savings – buy power at off peak
• Installed Capacity – NYC region values are higher
• Power Quality – Voltage Sags, interruptions
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Meeting with FDNY • Introduce the Project – Overview
– Safety by design
– Fire suppression system
– First Response Guide
• Get FDNY input and guidance – Hazard Risk Analysis
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• DEMONSTRATE A 6KW BATTERY SYSTEM AT A CON EDISON OWNED FACILITY
• TESTING TO EVALUATE KEY PERFORMANCE METRICS
• DEVELOP USE CASE TO DOCUMENT BENEFITS
EOS Zinc Air Battery Demonstration
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Other Energy Storage Projects
AES 8 MW Li-Ion Johnson City, NYS
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Demand Energy 100kW ALA at Barclay Towers,
NYC
AEP Fleet of 80 25 kW Li-Ion CES
Ice Storage at Durst, Barclay, Credit Suisse, Bank of America and Verizon Buildings
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Value of Demonstration
• Understand permitting and site prep issues
• Verify technical capability
• Real cost of operating and maintaining the system
• Develop decision-making tools
• Evaluate cost benefits
• Obtain operational experience
• Evaluate environmental benefits
• Evaluate use in Emergencies
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Location Impacts
• Regional/State – Regulatory/Policy Uncertainty
• Zones - Value of Services e.g. Installed Capacity
• Municipal Requirements – DOB, FDNY
• Utility Grid - Con Edison – highly congested, networked, and underground
– Space Constraints
– Interconnections
– Load Profile and Duration
– Thermal load Relief
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What Utilities Need
• Economic Decision Tools Tailored for Energy Storage – EPRI’s ES Valuation Tool is a Good Start
• Uniform Performance Protocols and Standards – Uniform way of measuring, quantifying, and reporting the
performance of ES in various applications
• Standard Specifications for ES Procurement
• ES Systems that Are Grid Integration Ready
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Q&A
