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©2011 A123 Systems, Inc. All rights reserved. Proprietary and confidential. ©2011 A123 Systems, Inc. All rights reserved. Proprietary and confidential.
Energy Storage for Integrating Wind
Andy Chu
VP, Marketing & Communications A123 Systems
UMass Lowell Wind Energy Research Workshop
©2011 A123 Systems, Inc. All rights reserved. Proprietary and confidential.
Energy Storage is a Multifunctional Tool
2
Frequency regulation
Spinning reserve
Renewable integration
T&D deferral
Peak shifting
Power quality and reliability
Voltage support
©2011 A123 Systems, Inc. All rights reserved. 3
Absorb sudden changes in wind farm output
Renewable Ramp Management
0:00 1:00 2:00
Ou
tpu
t (M
W)
Time (Hours)
Wind Project Output
Wind
Battery
Total Project
0:00 1:00 2:00
Ou
tpu
t (M
W/m
in)
Time (Hours)
Wind Project Ramp Rate
Wind
Project
0
100
0 100
Po
we
r O
utp
ut
(MW
)
Energy Capacity (MWh)
Storage System Sizing
Wind Farm Ramp Rate
Net Ramp Rate With Storage
Ramp Limit ±X MW/min
©2011 A123 Systems, Inc. All rights reserved.
Multiple Uses: Tehachapi Storage Project
• Customer: Southern California Edison
• Location: Tehachapi Windfarm + California’s largest wind resource
+ Wind development potential driving grid infrastructure upgrades and expansion
+ 2nd largest wind park in the world
– 660MW installed / ~5,000 turbines
• System + 8MW – 4 hour (32MW-hour) GBS system
– World’s largest Li-ion battery system when complete
+ Dynamic 4-Quadrant PCS/Grid Interface
+ A123 Prismatic Cells
+ Installation / Operation 2012
+ 13 Targeted Operational Uses – Individually and Stacked
5
Tehachapi, CA
©2011 A123 Systems, Inc. All rights reserved.
Multiple Uses: Tehachapi Storage Project
• Transmission-Related Uses + Voltage Support & Grid Stabilization
+ Demonstrate a decreased in transmission losses
+ Demonstrate how the system can defer transmission investment
+ Optimize Size and Cost of Renewable Energy-Related transmission
• System-Related Uses + Provide System Capacity and
Resource Adequacy
+ Black Start
+ Wind Firming
• ISO Market-Related Uses + Frequency Regulation
+ Spinning and Non-Spinning Reserves
+ Ramp Management
+ Energy Price Arbitrage
6
©2011 A123 Systems, Inc. All rights reserved.
Diverse System Needs…
7
0
100
0 100
Po
we
r O
utp
ut
(MW
)
Energy Capacity (MWh)
Storage System Sizing
Frequency Regulation
Wind Ramp Management
Wind Firming
Spinning Reserve
Capacity
©2011 A123 Systems, Inc. All rights reserved.
4MW
2MW
1MW
400kW
200kW
8
…Need a Flexible Product Architecture…
100kW
Choose Inverter Size Add Containers
More Power:
Select Number of Racks
More Energy: Scalability: