Transcript McCamey Wind Project

Energy Storage: Addressing Today’s Grid
Challenges for Tomorrow’s Energy Demands
Brad Roberts
Power Quality Systems Director
S&C Electric Company
Grid Week September 2011
©2010
www.sandc.com
The Grid Connected Energy Storage
Market is Large…..
Estimated Global Installed Capacity of Energy Storage
Source: StrateGen Consulting, LLC research; thermal storage installed and announced capacity estimated by Ice Energy and Calmac.
Note: Estimates include thermal energy storage for cooling only. Figures current as of April, 2010.
Grid-Purposed Energy Storage
- Hierarchy
Large Central Units
100s of MW
Substation Batteries
10s of MW
Graphics adapted from an EPRI Presentation by Joe Hughes
Storage at Grid Edge
10s of kW
Grid Storage Benefits
3- Market Benefits
• Energy Arbitrage
• Frequency Regulation
• Generation Capacity
All
three must
work together
synergistically to
justify widespread
storage deployment
2- Service Benefits
•
•
•
•
T&D Capital Deferral
Service Reliability (DA)
Improve System Efficiencies
Voltage Regulation
1- Strategic Benefits
• Prepare for new Revenue Models
• Prepare for new Renewable & Reliability Mandates
• Prepare for new Customer Behaviors
Layered Intelligence Reaction Times
Smart Grid Projects with Storage
Project Name
Size in MW
Online
Date
Unique Features
NEDO
1 MW
2011
Two battery types and solar integration
VACA-Dixon
2 MW
2011
Integration with 10MW solar plant
BC Hydro
Golden and
Field
2 MW (Total)
2012
Provide supplemental power to over 250
customers and avoid costs of new substation
Catalina Island
1 MW
2011
Supplement diesel generators in island
community
Hitachi GST
4 MW
2012
Duel use as backup power system and peak
shaving
Santa Rita Jail
2 MW
2011
Peak shaving and islanding scheme as part
of overall smart grid implementation
Smart Grid Projects with Storage
Project Name
Size in MW
Online
Date
Unique Features
Presidio Station
4 MW
2010
Supports an entire town of during outages
and combines with smart grid distribution
Rock County
Station
1 MW
2009
Integration with wind power to provide load
leveling
East Busco
Station
2 MW
2009
First integration of energy storage and smart
grid distribution
Citizens Station
2 MW
2009
Up to 8 hours of supplemental power to
increase system reliability
Balls Gap
Station
2 MW
2009
Up to 8 hours of supplemental power to
increase system reliability
Chemical
Station
1 MW
2006
First system of its kind in United States and
proved the use of energy storage in peak
shaving to defer substation upgrades
CES – A Virtual Substation Battery
CES is Operated as a Fleet offering a Multi-MW, Multi-hour Storage
Local Benefits:
Grid Benefits:
1) Backup power
2) Voltage correction
3) Renewable Integration
Integration
Platform
4) Load Leveling at substation
5) Substation Power Factor Correction
6) Ancillary services
CES Control Hub
Utility Dispatch
Center /SCADA
Communication
& Control
Layout for CES
Substation
CES
CES
CES
CES
AEP Ohio and S&C Debut First Lithium-IonBased CES
• First CES units in the world to be installed at customer
homes
• Sensing technology in CES units recognizes when
homes lose electric power, and automatically provides
back-up for up to several hours
• S&C is contributing significant technological expertise to
the AEP Ohio gridSMART Demonstration Project,
providing customers greater energy control and
improving electric distribution service and performance
Next Steps for Storage
• DOE Smart Grid and Storage stimulus projects will
confirm the value of storage
• Wyden Storage Act would provide the much needed
Investment Tax Credits to stimulate growth
• Storage participation in the Ancillary Services market
has proven very effective
• Storage will be a key component of higher penetration of
renewables and electric transportation