Optimize your grid availability. Surprising benefits of

Optimize your grid availability.

Surprising benefits of battery

energy storage.

EnerSys® globally

2/7/2014

Page 2

Industrial battery manufacturer:

Reserve Power, Motive Power, Aerospace & Defense

9.800 employees (November 2013)

Sales approximately $2,28 billion in 2013

Over 10.000 customers in over 100 countries

HQ in Reading, Pennsylvania, USA.

30 manufacturing facilities in USA, EMEA and Asia

Global leader: 23% share in a $8.8 billion market in CY 2012

Includes Motive Power and Reserve Power only

Content

1. Availability versus reliability

2. Availability “legs”

3. Energy storage system (ESS)

4. ESS operational functions

5. Network related issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

Main systems criteria

• Safety

– Human

– Environment

– System

• Correct functions

• Availability

1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. Ess locations

8. ESS reliability

9. Summary


Availability

• Long term program to

complete dedicated area

of action.

• Includes several tasks

and operations which

are renewed during that

time.

• Long term profitability.


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

Reliability

• Short term project.

• Includes several tasks which

have a start and an end.

• Maintenance is necessary

between tasks.

• Reliability is important quality

characteristic of components,

products and complex systems.

Example

Machine controller operates

continually for 1 yr. before

undergoing 1 week of allocated

maintenance & preventive

service actions.

Example

Paper machine availability

99,9995 percent means 3

hours unexpected downtime

per year due to faults.


Flight route

• Long term program to move

passengers from departure to

destination.

• Weekly, daily etc. flight

schedule.

• Plan B – should disturbances

occur:

– Cooperation with other

carriers

– Alternative routes

– Compensation for

customers

• Profitability of route in long

term.


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

Flight

• Maintenance program of plane.

• Plane allocation to route.

• Operational checks before take off

• Fresh pilots and cabin crew:

– Minimum rest time, maximum

working hours

– Rest plan during the flight

• Customer service during flight:

– Meals & drinks, special meals,

unscheduled offering

• Connection to aviation control units.

• Plan B for unexpected events:

– Sudden customer illness, plane

problems

2. Availability legs

A

v

a

i

l

a

b

i

l

i

t

y

Planning

Redundancy

R

e

l

i

a

b

i

l

i

t

y

Measurement

Lessons learned

Design

Quality

Engineering

Measurement

Lessons learned

Base product solution meeting most of the

requirements

Continuous improvement

Traceability, repeatability

Project based solution

Task, failure modes, disconnected loads, disconnection

& reconnection time, fault location

Network topology,

Fault history, down time, etc

3. Energy storage system (ESS)

3a. Description.

3b. Types.

3c. Locations in grid.

3d. Components.

3e. Simplified electrical diagram.

3f. Modes of operation.


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

3a. ESS description

• An ESS acts like a power plant, whilst also absorbing energy from

network.

• Both modes - charging and discharging – are operational

elements.

• An ESS features energy (kWh) and power (kW).

• Relation between energy and power equates to charging rate (C-

rate).

• Battery based energy storage reacts in tens of milliseconds.


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ERSS locations

8. ESS reliability

9. Summary

3a. Description.

3b. Types.


3d. Components.

3e. Simplified electrical

diagram.


3b. ESS types

• Mechanical

– Pumped hydro

– Compressed air

– Fly wheel

– Thermal

• Chemical

– Power to gas

• Electro-chemical

– Redox flow

– Li-Ion

– Molten salt

– Lead acid

– And many, many more


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

3a. Description.

3b. Types.


3d. Components.


diagram.


3c. ESS locations in grid

• Power production: Balancing supply

– Wind farms

– PV parks

• Power transmission: Network support

– Frequency/ voltage support

– Black start

– Emergency power supply

• Power distribution: Capacity support

– Peak shaving/ shifting

– Fault-Ride Through (FRT)

• Power consumption: Optimizing energy use

– Peak shaving/ shifting


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

3a. Description.

3b. Types.


3d. Components.


diagram.


3d. ESS components1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

3a. Description.

3b. Types.


3d. Components.


diagram.


3d. ESS components

PLC

BMS

Q1

PCMV

T1

Q2

Vp

rim

ary

Q2

.1

K1

K2

K1

.1K

2.1

U1

U2

U1.1

U1.1

PLC

VAUX. power

PCAP

T2

Hotel

load

Container

essential load

Balancing 1

Balancing 2

Battery container hotel load

- Ventilation

- lightning

- etc.

B

M

S

Pre

chargePre

charge

Battery

string 1

Battery

string 2

Aux power

Power

conversion

container

B

M

S

Connection Power conversion

Aux. power & control

Battery bank

Control

3e. Simplified electrical diagram

BM

S

BM

S

UPS

Q1

K1

K2

K1.1

K2.1

U1

U2

U1.1

U2.1

K3 K4

K5

K5.1

PLC

Communication to SCADA

BMS, inverters and controlling

Relays K3-4

Power supply from UPS

K6S5

Energy for BMS, inverters

electronics and other essential

auxiliary circuits

0,4 kV

558 VK3.1

K4.

1

PCBT

PCMT

AuxServices (cooling,

etc)

SCADA

T1

T2

(*(*

(*

(* Interlocking

Q2

20 kV


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

3a. Description.

3b. Types.


3d. Components.


diagram.


3f. ESS modes of operation

Energy ESS

- Limited power compared

with energy

- For reserve energy

Hybrid ESS

- Limited power compared with

energy

- For energy storing

- For network support

- Shared use

Power ESS

- Limited energy compared with

power

- For network support

or


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

3a. Description.

3b. Types.


3d. Components.


diagram.


4. ESS operational functions

4a. Reactive power support

4b. Frequency and voltage support

4c. Peak shaving and shifting

4d. Fault Ride Trough support


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

Power controller

• During normal operation energy

storage absorbs and feeds energy to

network.

• There is power and reactive current.

• Semiconductor operation has different

switching frequency

• As such operation model is not round.


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

4a. Reactive power

support

4b. Frequency and

voltage support

4c. Peak shaving and

shifting

4d. Fault-Ride Through

support

4a. Reactive power support

• Used, for example, when wind farm

cannot produce enough reactive

power.

• Replaces network capacitors to

compensate for inductive power.

• Use of batteries prevents resonances

between compensating capacitors

and power converters capacitors or

drives that are running windmills or

industrial applications.

• Response time is not critical, so

application is in controlling PLC.


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

4a. Reactive power

support

4b. Frequency and

voltage support


shifting


support

4b. Frequency & voltage support

• Power quantity depends on

variation: can be programmed.

• 5 set points for control system.

• Can set parameters based on

need

• PLC programs power

converter based on SCADA

instructions

• Energy storage supports

network voltage by feeding:• Capacitive current when

voltage below limits

• Reactive current when

voltage is over limits

• Function is similar to frequency

support


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

4a. Reactive power

support

4b. Frequency and

voltage support

4e. Peak shaving and

shifting


support

4c. Peak shaving & shifting

• Peak shaving: Network need

may be higher than base

power availability.

• ESS supports fast or

instantaneous demands.

• Application is in PLC

program.

• Peak shifting: production peak

is moved to time when

consumption is high.

• Power demand in residential

network is high in morning and

evening while day time is less.

• Consumption is in other part of

the network.


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

4a. Reactive power

support

4b. Frequency and

voltage support


shifting


support

4d. Fault-ride through (FRT)

• FRT function allows

user to customize

voltage ride through

behavior to meet grid

code requirements.

ESS Voltage

Icapacitive

max

Iinductive

max

Vfer

I

V


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

4a. Reactive power

support

4b. Frequency and

voltage support


shifting


support

5. Network related issues

5a. Redundancy: normal operation

5b. Redundancy: T2 fails, switchgear operation

5c. Planning: normal operation

5d. Voltage support in long distribution lines


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

5a. Redundancy: normal operation

110

kV

20 kV

110

kV

20 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

110

kV

20

kV

110

kV

20

kV0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

110

kV

110

kV

400

kV

400

kVT1 T2


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

5a. Redundancy:

normal operation

5b. Redundancy: T2

fails, switchgear

operation

5c. Planning: normal

operation

5d. Voltage support in

long distribution lines

5b. Redundancy: T2 fails, switchgear

operation

110

kV

20 kV

110

kV

20 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

110

kV

20

kV

110

kV

20

kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

110

kV

110

kV

400

kV

400

kVT1 T2


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

5a. Redundancy: normal

operation

5b. Redundancy: T2

fails, switchgear

operation


operation



5c. Planning: Normal operation

110 kV

20 kV

Multiple of 3 kW

PV units can during

day time create

overvoltage in long

distribution lines

0,4 kV

Multiple of 3 kW

PV units can during

day time create

overvoltage in long

distribution lines

0,4 kV


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary


operation

5b. Redundancy: T2

fails, switchgear

operation


operation



5d. Voltage support in long distribution

lines

• When distribution line is long,

daily voltage variation is

significant.

• Voltage at start of line remains

stable.

• During day time consumption

is low, but PV solar peaks –

causes significant voltage rise.

• During evening no PV

production, but consumption is

high.

• This can lead to voltage drop

below limits.

V

+ 10 %

- 10 %

DistanceUN


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary


operation

5b. Redundancy: T2

fails, switchgear

operation


operation



6. ESS benefits

6a. Minimal disturbance during transformer failure

6b. Shared use

6c. Speed up emergency power availability

6d. Voltage support with long MV distribution line

6e. Voltage support in LV distribution line

6f. Energy storage locations


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

6a. Redundancy & support: T2 fails, and ESS

supports the grid1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

110 kV

20 kV

110 kV

20 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

110 kV

20 kV

110 kV

20 kV

0,4 kV

0,4 kV

0,4 kV

110 kV110 kV

400 kV400 kV

T1 T2

0,4 kV

0,4 kV

0,4 kV

Minimizing the effect

of the network failure

6b. Redundancy: Common Use – Network support

and acting as UPS for critical user1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

6a. Minimal disturbance

during transformer failure

6b. Shared use

6c. Speed up emergency

power availability

6d. Voltage support with

long MV distribution line

6e. Voltage support in LV

distribution line

6f. Energy storage

locations

110 kV

20 kV

110 kV

20 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

110 kV

400 kV

T2

Critical

User

Data centers

Telecommunication

Can be used also for peak shaving

inside the city area

6c. Redundancy: Helper motor and auxiliary power

supply to reserve power gas turbine station1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

110 kV

20 kV

110 kV

20 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

110 kV

400 kV

T2

M GT

Aux.

Power

unit

Faster start up of turbine power plant

during black out

6d. Redundancy: Support Use – Network connection

to grid is long and local network suffers voltage drop1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary



6b. Shared use


power availability

6d. Voltage support

with long MV

distribution line

6e. Voltage support in LV

distribution line

6f. Energy storage

locations

110 kV

20 kV

0,4 kV

0,4 kV

0,4 kV

400 kV

T2

110 kV

Mine exploration

Remote stations

Voltage boost

in the end of line

6e. Planning: Overvoltage, PV-production – no

consumption1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary



6b. Shared use


power availability



6e. Voltage support in

LV distribution line

6f. Energy storage

locations

110 kV

20 kV

Multiple of 3 kW

PV units can during day

time create overvoltage in


0,4 kV

Multiple of 3 kW

PV units can during day

time create overvoltage in


0,4 kV

Voltage rise limitation

in the end of line

6e. Planning: Under voltage, no PV-production,

consumption1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary



6b. Shared use


power availability



6e. Voltage support in

LV distribution line

6f. Energy storage

locations

110 kV

20 kV

0,4 kV

Multiple of 3 kW

Consumptions points can

lead to lower voltage than

standards defines

0,4 kV

Multiple of 3 kW

Consumptions points can

lead to lower voltage than

standards defines

Voltage boost

in the end of line

7. ESS in power plant locations1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

110 kV

20 kV

110 kV

20 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

0,4 kV

110 kV

Power ESS

Energy ESS

Energy ESS

Hybrid ESS

7. Example: Distribution company’s ESS1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8. ESS reliability

8a. Support and construction

8b. Availability legs

8c. Design: High purity materials

8d. Design: AGM battery grids vs PowerSafe ® SBS pure lead grids

8e. Factors determining VRLA battery working life

8f. Thin plate pure lead grid: post corrosion test

8g. Reliability: redundancy

One inverter unit power train

8h. Engineering: On line balancing

8i. Engineering Power Plant Controller (PPC)


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and construction

One leg Two legs Three legs Four legs

= falling direction

possibilityEngineered


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction


8c. Design: High purity

materials

8d. Design: AGM

battery grids vs

PowerSafe ® SBS pure

lead grids

8e. Factors determining

VRLA battery working

life: Positive grid

corrosion – typical

evolution

8f. Thin plate pure lead

grid: post corrosion test

8g. Reliability:

redundancy

8h. Engineering: On-line

balancing

8i. Engineering Power

Plant Controller (PPC)


A

v

a

i

l

a

b

i

l

i

t

y

Planning

Redundancy

R

e

l

i

a

b

i

l

i

t

y

Measurement

Lessons learned

Design

Quality

Engineering

Measurement

Lessons learned

Base product solution meeting most of the

requirements

Continuous improvement

Traceability, repeatability

Project based solution

Failure modes, disconnected loads, disconnection &

reconnection time, fault location

Network topology,

Fault history, down time, etc

Virgin Lead

Oxide

High Grade

Acid

Virgin Lead

8c. Design: High purity materials1. Availability versus

reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction


8c. Design: High

purity materials

8d. Design: AGM

battery grids vs


lead grids



life: Positive grid


evolution



8g. Reliability:

redundancy


balancing



• Positive grid alloy is Pb-Ca-Sn

• Corrosion at grain boundaries

leads to:• Grid corrosion

• Grid growth

• Reduction in current carrying

capacity

• Loss of contact between grid

and active material

8d. Design: AGM battery grids vs PowerSafe ® SBS ®pure lead grids

• Pure lead crystallography

• Very fine grain structure

makes grid far more corrosion

resistant

• Pure lead grids with same

design life can be much

thinner than lead calcium

grids


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction



materials

8d. Design: AGM

battery grids vs

PowerSafe ® SBS ®pure lead grids



life: Positive grid


evolution



8g. Reliability:

redundancy


balancing



8e. Factors determining VRLA battery working life:

Positive grid corrosion – typical evolution

Day 1

80 days at 2.27Vpc at 55°C

320 days at 55°C

400 days at 55°C


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction



materials

8d. Design: AGM

battery grids vs


lead grids

8e. Factors

determining VRLA

battery working life:

Positive grid


evolution



8g. Reliability:

redundancy


balancing



8f. Thin plate pure lead grid: post corrosion test

+400 days – Grid remains intact


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction



materials

8d. Design: AGM

battery grids vs

PowerSafe ® SBS ® pure

lead grids



life: Positive grid


evolution

8f. Thin plate pure

lead grid: post

corrosion test

8g. Reliability:

redundancy


balancing



8g. Reliability: redundancy

BMSU, T

I

Stop

Stop

SOC, SOH, u, I, T

BMSU, T

I

Stop

Stop

SOC, SOH, u, I, T

PLC

Energy module1300 kWh as nominal

864 VDC as nominal


864 VDC as nominal


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction



materials

8d. Design: AGM

battery grids vs


lead grids



life: Positive grid


evolution



8g. Reliability:

redundancy


balancing



8g. Reliability: Redundancy

One inverter unit power train failure


864 VDC as nominal

Disconnector

BMSU, T

IStop

SOC, SOH, U, I, TDisconnection

in case of failure


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction



materials

8d. Design: AGM

battery grids vs


lead grids



life: Positive grid


evolution



8g. Reliability:

redundancy


balancing



8h. Engineering: On-line balancing

Balancing 1

Balancing 2

Battery container hotel

load

- Ventilation

- lightning

- etc.

B

M

S

Pre

chargePre

charge

Battery

string 1

Battery

string 2

Aux power

Power

conversion

container

B

M

S


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction



materials

8d. Design: AGM

battery grids vs


lead grids



life: Positive grid


evolution



8g. Reliability:

redundancy

8h. Engineering: On-

line balancing



8i. Engineering Power Plant Controller (PPC)

Power plant control:• Each power conversion container has

own controller that controls ESS

• Power plant has own controller that

communicates with customer

Control system (SCADA or similar)• PPC sets new parameters or control

modes of system after receiving them

from customer control system

• PPC communicates status information

of power plant (SOC, operating ESS,

etc.)

• PPC asks permission for balancing of

energy string


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

8a. Support and

construction



materials

8d. Design: AGM

battery grids vs


lead grids



life: Positive grid


evolution



8g. Reliability:

redundancy


balancing



9. EnerSys® OptiGrid TM summary

• OptiGrid TM Stored Energy Solutions is modular battery based

Energy Storage System and can it be installed any place in grid

• OptiGrid TM has several functions that can support network

• As battery based ESS, OptiGrid TM can react rapidly to the demand

from network

• Benefits for the grid

• Can help to increase availability

• Minimizes network disturbance effects

• Support network availability at customer site

• Allows to optimize the usage of energy


reliability


3. Energy storage

system (ESS)

4. ESS operational

functions

5. Network related

issues

6. ESS benefits

7. ESS locations

8. ESS reliability

9. Summary

EnerSys World Headquarters 2366 Bernville Road, Reading, PA

19605, USA Tel: +1-610-208-1991 / +1-800-538-3627

EnerSys EMEA EH Europe GmbH, Löwenstrasse 32, 8001 Zurich,

Switzerland

EnerSys Asia 152 Beach Road, Gateway East Building Level 11,

189721 Singapore Tel: +65 6508 1780

© 2014 EnerSys. All rights reserved.Trademarks and logos are the

property of EnerSys and its affiliates unless otherwise noted. Subject to

revisions without prior notice. E.&O.E.

www.optigrid.enersys.com

[email protected]

[email protected]

Publication number: WEBINAR -001-FEB 2014

mailto:[email protected]

mailto:[email protected]

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