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Dale Bradshaw CEO Electrivation [email protected] 423-238-4052. Energy Storage, The Key Enabler for the Future Smarter Grid. Why is Energy Storage Critical to Improving Affordability and Reliability. Shift wind and solar to meet the peak and make wind and solar dispatchable.

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dale bradshaw ceo electrivation dtbradshaw@electrivation com 423 238 4052
Dale Bradshaw

CEO Electrivation

[email protected]


Energy Storage, The Key Enabler for the Future Smarter Grid

why is energy storage critical to improving affordability and reliability
Why is Energy Storage Critical to Improving Affordability and Reliability

Shift wind and solar to meet the peak and make wind and solar dispatchable.

Provide demand reduction or avoid need for new capacity

Buy low cost electricity at night and run during high cost daily peaks

Provide for fast (<4 cycle) backup power for hours to improve system reliability

Delay or avoid the need to build new transmission or distribution lines in high cost areas

Provide frequency regulation and spinning reserve

Reduce carbon emissions

Reduce consumption of oil and natural gas

battery energy storage systems history review
Battery Energy Storage SystemsHistory Review

Golden Valley Electric Association

NiCad – 27 MW BESS for 15 minutes for reliability improvement (3 to 82 outages covered each year)

advanced battery breakthroughs
Advanced Battery Breakthroughs

Long Life (defined by number of charge and discharge cycles is needed)

Cycle lifetime of 5,000 to 10,000 cycle is now possible

Charging and discharging daily implies 300 or more cycles a year, 9,000 cycles in 30 years

Costs have decreased by 30% to 50%

$2,000/kW now for 7 hours of storage instead of $3,500/kW

Large battery complexes are being built in >1 Mw sizes

Acceptable efficiency of 70% or more

lithium ion li ion battery attributes
Lithium Ion (Li-ion) Battery Attributes

AltairNano Li Ti 1 MW for 15 minutes at 750 to 1050 V

Premium Power Corporation TransFlow 2050-7Zinc Bromide battery on a trailer 500 kW, 7.4 hours and 3.8 MW-Hr & ~$1 million
why interest in the premium power corporation zinc bromide battery
Why Interest in the Premium Power Corporation Zinc Bromide Battery?

Lifetime of more than 10,000 cycles of deep charge and discharge

Lowest cost battery of all the advanced options based on CRN due diligence report

Potentially very low environmental impacts

PPC ZnBr is UL, FCC, and NFPA certified

PPC has recently completed the production of its first TransFlow 2050-5 (500 kW, 2.8 MWh, 5.6 hours)

PPC has production capacity to meet the needs of the participating co-ops in this proposal.

The PPC ZnBr batteries are made in the U.S.

PPC is well capitalized.

PPC ZnBr has the potential for fast frequency regulation and nearly unlimited cycle life.

nreca crn projects
NRECA CRN projects

Confirmed addition of a TF-2050-7 for Kotzebue Electric Association (KEA) in Kotzebue Alaska to provide:

Time shift wind to daily peak

Frequency regulation and spinning reserve


Reduce diesel generator start-ups and O&M

Emergency back-up


Improved fossil plant efficiency

Other possible future projects in Kauai, South Carolina, and Floriday

possible value streams for energy storage potential net present values
Possible Value Streams for Energy Storage(Potential Net Present Values)

Capacity credit or demand charge reduction ($500/kW to $2500/kW)

Arbitrage value (Buy low and sell high ranging from $900/kW to $1500/kW)

Firming and Shifting Renewables (wind and solar)

Improved thermal plant efficiency

Reduce CO2 emissions from thermal plants

Improve Thermal Plant Reliability

T&D capital asset deferral ($200/kW to $1300/kW)

Avoid or delay need for second transformer or transformer bank

Reduced congestion and line losses

Frequency regulation ($1600/kW to $4000/kW)

Dynamic VAr Support ($100/kW)

Improved service reliability

Range of Values for 6 hours of Energy Storage assuming 2% real discount ratelow gas of $3/MBtu, wind energy off-peak, 70% gas on peak, etc.

ZnBr price for 7.4 hours is about $2500/kW installed

future trends with advanced batteries
Future Trends with Advanced Batteries

Costs in $/kW-hr will drop (mass production) as the value for installing batteries will increase (increased costs for natural gas and oil, for carbon emissions, new capacity, etc.)

Commercial feasibility of advanced batteries will be established in 2010 with large orders possible by 2011

Example of expansion (PPC ZnBr batteries):

100 MW-hr capacity in 2008

400 MW-hr capacity in 2009

1500 MW-hr to 4000 MW-hr in 2010

G&T’s with distribution coops should examine/evaluate where application of advanced batteries can add value and reduce cost of electricity and rates.

Advanced batteries compete with CAES when natural gas price exceeds $8/MBtu with CAES at $1,000/kW or $3/MBtu at $2,000/kW assuming no carbon tax. Currently significant uncertainty in CAES capital cost and natural gas prices