Carolin Käufler Rolls-Royce Solutions Berlin GmbH

1. BATTERY ENERGY STORAGE SYSTEMS
FOR CHARGING STATIONS
Enabling EV charging and preventing grid overloads from high
power requirements

2. 2
Table of contents
1
Challenges of EV charging infrastructure and how to
overcome these high-power requirements
Case Study: Investment in grid reinforcement vs. in a
BESS
About us – introduction to Rolls-Royce Power Systems
2
3
Recent references and lighthouse projects
4

3. 3
About us – introduction to Rolls-Royce
Power Systems
1

4. 4
Rolls-Royce
group
A world-class technology
company, built on three strong
and complimentary business
units.
Power Systems is the group’s 2nd
largest business and frontrunner
in electrification.
Defence Power Systems
Civil Aerospace
16,400
engines in service
around the world
35
types of commercial
aircraft powered by us
17,900
total employees
16,000
engines in service
around the world
160
customers in over 100
countries
11,100
total employees
20,000
reciprocating engines
sold per year
≈ 9,000
total employees
>40,000
customers in 13
different industries
4.536bn
underlying revenue
3.368bn
underlying revenue
2.749bn
underlying revenue
Private © 2022 Rolls-Royce
4
4

5. 5
At a glance | We are
a global leader in
power solutions
aiming to become
the #1 green-
solution provider in
off-highway
Marine
Powergeneration
Industrial
25%
35%
28%
Defenseand others
12%
£2,750M
revenue 2022
9,000
employees
> 150,000
units as installed base(large engines)
22
engines series
Pioneering sustainable power
for a low-carbon society
We are committed to reduce GHG emissions
by 35% by 2030 by developing towards a
sustainable powerhouse.
Revenue split by segment
Private © 2022 Rolls-Royce 5

6. 6
Future-ready green technology
Fuel cell
2025
Hydrogen genset
2023
Electrolyser
2024
Genset1 Battery energy storage
system (BESS)
Dynamic uninterruptible
power supply (DUPS)
Plant manager
EnergetIQ
Hydrogen-based solution offering
Simulation and
sizing
Financing
services
Operation and
maintenance
Engineering
and manu-
facturing
▪ Load profile analysis
▪ TCOsimulation
▪ Opt. component sizing
▪ Grid stability analysis
▪ Active monitoring
▪ Remotediagnostics
▪ Reporting and optimization
▪ Predictive maintenance
Installation and
commissioning
▪ Development of interfaces
▪ On-site installation (optional)
▪ Commissioning and on-site acceptance tests
▪ LoC-based financing & ECA2-backed direct loan
▪ Equity funding & forfeitureshort-termfinancing
▪ Full depreciation leasing (Europe)
1. Suitable for gas-, diesel-, e-fuel-, blending and H2-retrofit 2. Export credit agency
▪ In-house OE development
▪ Customizing-based ‘Tech-Baukasten’
▪ Manufacturing in line with mtu standards
▪ Factoryacceptance testing
We offer a broad portfolio of excellent technology … … as a ‘one-stop shop’
6
E-fuel-ready
Optimizes all solutions

7. 7
Challenges of EV charging infrastructure
and how to overcome these high-power
requirements
2

8. 8
Increasing
demand for
electrification
Due to the growing numberof EVs
and increasing battery capacity,
greater amountsof energy are
required.
Grid congestion
management
Not all grids can deliver the power
needed for charging,especiallynot in
rural and LV areas or highly frequented
locations.
High demand
charges
As the power range of EVs increasesand
charging times strived to be reduced,the
load peaks for chargingstations are
becoming higher and higher, causing
higher grid fees.
Charging station operators
and their pain points
Grid limitations - No
reliable charging
capacity
To prevent a collapse at peak times, grid
operators are forced to intervene in
power distribution.
In these moments, fast chargingis not
guaranteed,only slow charging.

9. 9
Solution: Battery energy storage system | Enabling EV
charging and preventing grid
overloads from high power requirements
Integration of BESS for energy
storage and supply
Optional installation of plant
manager Energetiq for smooth
control and easy integration with
your SCADA system
3
Renewableenergy
sources(RES)
2
1
Plantmanager
Energetiq
Connected with all
solution components
3
Optional interconnection of PV/
wind parks to feed energy into the
BESS and enable purely green
solutions
2
Utilityprovider
Batteryenergy
storagesystem(BESS)
1
EV charginghub

10. 10
Why do we need a
BESS for EV
charging?
Grid congestion
management!
BESS to increase the
charging capacity.
Private © 2022 Rolls-Royce
• High demand of EVs, ,fast-charging at
the same time → The energy
demand surpasses the rated capacity
of the grid connection
Consequences:
1. A one-time bill to cover costs for the
grid reinforcement
2. Additional costs at utility bills
3. Loss of revenue due to long
execution times
TheSolution: Installing a BESS
• BESS covers the peak loads, hence
charging stations get more power
• This enables to meet the growing
demand without increasing the size
of their grid

11. 11
Our charging point operators seek to combine five primary use cases
Grid congestion
management
▪ Handlegrid
congestions by
adding a BESS
▪ Avoidor defer
investments in new
grid infrastructure,
which is associated
with time and cost-
intensive work and
permits.
Renewable
integration
▪ Interconnect PV i.e.
on the rooftop of
parking slot
▪ Self-consumption
optimization via
load-shifting
Intensive
gridusage
▪ Grid may be unable
to provide high
power requirements,
since DSO can
impose load
limitations
▪ With a BESS, output
power can be carried
out even on a LV grid
connection, enabling
to charge in minutes
• In many countries grid
operators apply
demandcharges on the
basisof theirhighest
peakload
• A BESS can cut charges
by supplying energy in
peak load hours and
flattening the load
profile when absorbing
energy in low demand
hours
Reduce demand
charges
1 2 3 4
Use case selection, non-exhaustive
Temporary
powersupply
5
▪ Providetemporary
charging capacity
▪ e.g. at events, for
C&I constructions or
high traffic “black
Saturday

12. 12
Energy storage for EV
charging
Private © 2021 Rolls-Royce Not Subject to Export Control 12
• Peak shaving or Self-
consumption are not
financially attractive on
their own
• Additional benefits (CAPEX
savings for grid
connection, grid services)
can make the business
case
• Still…. Higher investment
costs for grid connection
can kill the business case.
Is the grid infrastructure strong enough?
Is the customer installation big enough?
Are there high power dependent energy rates?
What energy to charge with? (self-consumption)

13. 13
▪ Seamlessintegration of a power plant's diverse assets
▪ Automated control of power generation, storage and demand
▪ Optimised operation lifting efficiency and savingmoney,fuel andemissions
Plant manager EnergetIQ
The "brain" of the power plant
BESS product portfolio | We offer three distinct mtu EnergyPacks - QS, QL and QG
EnergyPack QG
EnergyPackQS EnergyPackQL
"Small and sturdy" "Large and versatile" "Giant and powerful"
▪ Factory-tested plug-and-playdesign
▪ Black-startcapability
▪ Sheltered environment with highrobustness
▪ Relocatablecontainer
▪ Digital connectivity
▪ Factory-tested plug-and-playdesign
▪ Black-startcapability
▪ Sheltered environment with highrobustness
▪ Relocatablecontainer
▪ Digital connectivity
▪ Seamlessintegration, scalability & fast commissioning
▪ Black-startcapability
▪ Up to +40°C without de-rating
▪ Ultrafastresponse,100% instant load acceptance
▪ Digital connectivity
550 kWh1 1,000 kWh 2,000 kWh2 4,400 kWh 35,500 kWh
Morethan 1,000kWh via
combined solutions
USPs
Based on systemwith 12 to 96 blocks of 370 kWh
each – scalability up to 100 MWh and morepossible
100 kWh

14. 14
Case Study: Investment in grid
reinforcement vs. in a BESS
3

15. 15
Case Study: Grid congestion extension | Microgrid offering multiple solutions
Grid connection
extension
▪ Handlegrid
congestions by a
battery energy
puffer
▪ Avoidor defer
investments in new
grid infrastructure,
which is associated
with time and cost-
intensive work and
permits.
Renewable
integration
▪ Interconnect PV i.e.
on the rooftop of
parking slot
▪ Self-consumption
optimization via
load-shifting
Intensive
gridusage
▪ Grid may be unable
to provide power
requirements, since
DSO can impose load
limitations
▪ By adding a BESS,
output power can be
carried out even on a
low power grid
connection, enabling
to charge in minutes
(not in hours).
• In many countries grid
operators apply
demand charges on the
basis of their highest
peak load
• A BESS can cut charges
by supplying energy in
peak load hours and
flattening the load
profile when absorbing
energy in low demand
hours
Reduce demand
charges
1 2 3 4
Use case selection, non-exhaustive
Temporary
powersupply
5
▪ Provide temporary
charging capacity
▪ e.g. at events or
high traffic “black
Saturday

16. 16
Investment in grid
connection
reinforcement
versus mtu
EnergyPack QS
Today, an existing and
sufficiently robust electricity
grid at the planned location
is a necessity for the
economic operation of fast
charging infrastructure.
Private © 2022 Rolls-Royce
What:
A Charging Hub with 20 Fast Chargers (150 kW) and 22 Slow Chargers (22kW), approx. 200
cars per day to be charged requiring in average 30kWh per car.
Where:
On the Highway 7 in Germany.
Challenge:
The low-voltage grid at the charging station cannot provide the high charging power. The
charging station operator must decide whether to invest in grid reinforcement or to opt for
a quick installed energy storage system.
- = Distance to nearest
MV substation: 5 km
(Lübberstedt)
= Plannedcharging station

17. 17
Results of the Case
Study
By investing in a BESS,
operators do not only save
in capital expenses but also
can decrease operating
costs by -10%.
Private © 2022 Rolls-Royce
Grid connectionreinforcementvs. mtu Energy Pack QS with 250kW (267 kWh)
230
235
2
3

18. 18
Recent references and lighthouse
projects
4

19. 19
We have a global track record of installed battery solutions
19
5
continents
33
countries
90
MWh
installed
Münster
Aachen
Berlin (3)
Saarland
Kirchberg
Saarland
Nürnberg
Forst
Munich
55 112
3,000 3,046
200 388
100 112
50 61
100 280
300 837
30 39
45 126
Seychelles
Kenya
Tanzania(2)
Zambia
Namibia
5,100 3,363
180 183
150 298
120 127
105 336
Philippines
Indonesia
Australia
New Zealand
Cook Islands
1,200 785
90 168
800 1,980
130 222
500 502
Nicaragua (2) 1,800 2,990
Bahamas 270 330
Haiti (3) 805 980
St. Eustatius 1,000 1,428
Chile 150 334
Guyana 60 107
Estonia
Poland
Denmark
Netherlands
Netherlands
Austria (2)
Austria
Slovenia
180 220
300 670
80 155
600 665
1,200 1,330
550 615
30 61
150 333
2,500
1,500
500
3,000
2,000
1,000
100
In Progress
Power in kVA
Capacity in kWh
Off-grid
Remote system (island solution)
not connected to power grid
On-grid
Battery solution integrated
into the regional power grid
On+off-grid
Combination of both storage solutions
(e.g., with integrated emergency system)

20. 20
Wide range of use
cases for charging
stations
We are working with local
authorities, charge point
operators, fleet managers
and others to support the
energy transition and
provide enough charging
capacity.
Private © 2022 Rolls-Royce
Our solution lowers
costs, optimizes
electric vehicle
charging and
unlocks energy
services to lower
energy bills and
increased
resiliency.

21. Interested? Please get in touch!
CarolinKäufler, BusinessDevelopment Manager
LinkedIn: https://www.linkedin.com/in/carolin-käufler-40031a172/
21

22. 22
Many utility grids tend to reach overload when havingto cope with several e-vehicles
being charged at the same time or with superchargers that are demanding high
power delivery quickly. Now SYNERG-E, an EU-funded tech project, is helping e-vehicle
service stations overcome these challenges at several locations in Austria.
Austria – 2020
E-vehicle superchargers in Austria
Verbund
6× EnergyPack QM
Each 500 kVA/550 kWh
Ongrid ESS
Configuration Customer
▪ Grid quality
▪ Fast-charging
▪ Supporting six fast-charging stations across Austria
▪ Charging of up to four e-vehicles with 150 kW or two
vehicles with 350 kW
Main benefits
Deliverables
Scope

23. 23
Enabling charging for Electric Buses
• Solarenergy integration
• Peak shaving
• Ramp rate control
The MunicipalUtility of Münster supllies power, gas, district heating and water to
more than 10 000 households. They also operate the public transport system that is
used by over 120 000 travelers a day. With the introduction of an emission free
busline, fast chargers with 350 kW charging power were installed at several bus
stops. At a bus stop at the end of a distribution cable, this caused voltage issues. To
stabilize the voltage, an energy storage system from Rolls-Royce was added.
Main benefits
• Grid stability
• Self-consumptionof
renewableenergy
• Fast charging
Applications
On grid SolarPV BESS
Configuration
Estimated savings | carbon
emissions
200,000
kg/year
55 kW / 112 kWh
MTU EnergyPackQS
Municipal utility of
Münster
Deliverables
Germany - 2016
Customer

24. 24
ABO Wind now has 40 electric vehicles in its fleet. The charging infrastructure was
slowly reaching the limits of its capacity.
Therefore, the company opted for a sustainable and efficient solution: The in-house
PV system with 80 kW peak output and a 200 kWh battery storage.
In the first few months, the company was able to cover 98% of the demand for the EVs
with solar power from their own roofs and there is still a lot of room for improvement,
since most of the PV power is fed into the general power grid.
From the PV source electricity for around 400,000 km a year for EVs are generated..
Germany– 2022
EV charging at the workplace for e-fleets
ABO Wind
Customer
▪ Self-consumption
▪ Fast-charging
▪ EV charging at 14 charging points
▪ Fast amortization in comparison to the cost for the
raising fuel prices
Main benefits
Deliverables
Scope
On grid SolarPV BESS
Configuration
60kVA / 194 kWh
MTU EnergyPackQS