Concerns over the stability of the grid’s supply continue to rise as we move towards a decarbonised future under increasing Governmental pressures and ambitious targets. This includes a magnified importance on renewable generation, which is variable in nature and is being connected to the UK’s energy mix at a quickening pace. The session provides information on the benefits of energy storage technology and the practical applications for businesses of all sizes as the UK heads towards a decarbonised and sustainable future.

1. DR ALEX MARDAPITTAS
BEng, PhD, CEng, MIET, MEI
CHIEF EXECUTIVE OFFICER, POWERSTAR

2. The importance of energy storage in securing the
supply and maximising renewables

3. Source: Limejump

4. Source: Limejump

5. Source: Limejump

6. Source: Limejump

7. • Supply issues have become increasingly common as the UK
electricity network struggles to keep up with increased demand
• Many sites are experiencing problems such as brownouts,
blackouts, voltage spikes and dips causing significant damage to
electrical equipment and sensitive business operations
• A 2017 report found that energy related failures can total as much
as 17% of annual revenues*
• There were 986 blackouts or brownouts in 2016 – a 46% increase
from 2015^
• The South East of England was the region with the highest
number of blackouts, with an average cost of €66,170 (£55,000)
per hour
Sources:
* Centrica, 2017
^ChannelBiz, Electrical Times, 2016
ISSUES WITH THE CURRENT ENERGY LANDSCAPE

8. THE IMPORTANCE OF SYSTEM BALANCING
What causes an event
A mismatch in supply and
demand on the electrical
grid causes a shift in
frequency
Responding to an event
Flexibility required to
balance grid frequency
A business role
Small-scale generators
and businesses have
their electrical assets’
responses automated to
deliver flexibility

9. FLEXIBILITY VALUE BY SPEED OF RESPONSE

10. FUTURE ENERGY LANDSCAPE
VIRTUE + supply resilience + process optimisation (through voltage regulation) + harmonics
reduction and power quality improvements = Powerstar VIRTUE
The transition from a centralised to distributed electricity network will be a critical
component to achieving the green future energy network. Removing centralisation from
the grid will require the simultaneous uptake of several technologies with different
implications for the grid:

11. VIRTUE: ENERGY STORAGE SOLUTIONS
VIRTUE energy storage solutions are forming an integral part in the future development
of smart cities, enabling energy generated from sources such as wind and solar to be
stored locally and ultimately utilised more efficiently. Additionally, due to its full UPS
capabilities it offers site wide backup to critical systems.

12. VIRTUE is designed for the client in mind in order to
provide:
1. Power resilience
2. Energy optimisation through voltage regulation
3. Harmonics reduction and power quality
improvements
4. Power quality improvements
5. Firming of renewable generation assets
Therefore, it is an optimum storage system for behind the
meter applications.
POWERSTAR VIRTUE – A COMPLETE SOLUTION

13. BENEFITS PROVIDED BY POWERSTAR VIRTUE
• Supply resilience (through full UPS
capabilities)
• Energy optimisation through voltage
regulation
• Harmonics reduction and power
quality improvements
• Maximises renewable generation
• Minimise transmission costs (Triads)
• Minimise distribution costs (peak
DUoS)
• Capacity market (CM) levy
avoidance
• Average reduction of 25% off your
electricity bill
• Balancing services: frequency
response
• Balancing services: energy
arbitrage
• Capacity Market (CM)
• Renewable portfolio balancing
As a bespoke solution it can be integrated with renewables, voltage regulation and existing
co-gen. It can also provide full UPS capabilities to support site wide energy resilience.

14. KEY APPLICATIONS OF POWERSTAR VIRTUE
Behind-the-Meter
Battery energy
storage
Site wide UPS
Voltage regulation
Maximise
renewables
Battery energy
storage
Renewable
generators
Battery buffered
EV charging
Battery energy
storage
Electric vehicle
charging
Solar PV
Maximise existing
Cogen
Battery energy
storage
CHP

15. BENEFITS OF ENERGY RESILIENCE
Energy storage integrated with full UPS
capabilities can connect to the load within
milliseconds of an energy-related failure
Allows a business to maintain its operations,
protecting finances and reputation
Energy-related failures are likely to increase as
more renewable sources are integrated on the
National Grid system
Powerstar VIRTUE provides full process
optimisation and supply resilience
Site wide UPS backup (i.e. lights,
critical systems, continuous processes
and IT systems
Traditional system specific UPS
backup (i.e. IT systems only)

16. DEMAND MANAGEMENT
(BEFORE VIRTUE INSTALLATION)

17. DEMAND MANAGEMENT
(AFTER VIRTUE INSTALLATION)

18. INTEGRATING STORAGE WITH SOLAR (PV)
Solar energy consumed by your site
Spare solar energy can be stored by VIRTUE
Use your stored energy from VIRTUE when you are not
generating
Energy storage solutions can optimise solar PV arrays by storing energy at peak
generation times for use at peak consumption times. By integrating solar and storage
systems, the site is able to increase reliability of, and better monetise, the solar PV array.

19. LOAD PROFILE WITH SOLAR
(BEFORE VIRTUE INSTALLATION)
Time
kWh
Typical load profile (green-
yellow-red) of a store fitted with
200 kW of solar panels on a
particularly sunny summers
day. The direct effect of solar
on the load profile is quite
substantial, reducing the store’s
overall consumption of
electricity by 32.6%. However,
the majority of this load
reduction occurs during non -
peak hours, with solar only
reducing the load requirement
of the store during peak tariff
times by 18%.

20. LOAD PROFILE WITH SOLAR
(AFTER VIRTUE INSTALLATION)
The graph shows VIRTUE
utilising both negative power
(back EMF) and solar power in
such a way as to prevent the
store ever demanding more
than 100kWh per half hour of
energy from the grid, as well as
removing the site completely
from grid power during peak
tariff. Therefore the VIRTUE
operates to control maximum
demand from the grid.
Time
kWh

21. OPTIMISING EXISTING GENERATORS
(CHP IN THIS EXAMPLE)
Adding the VIRTUE
system allows the full
optimisation of the
existing CHP
generating an
additional value of
£103,000 per year
OPTION A – Standalone 4.3MW CHP
OPTION B – 4.3MW CHP & 1MW/1MWh VIRTUE

22. VIRTUE RESULTS: MINIMISE RELIANCE ON THE GRID
The chart below shows the results of a Powerstar VIRTUE’s charging and
discharging profile to minimise grid import and export for a client in the leisure &
hospitality industry

23. Combining electronic-dynamic voltage regulation with Powerstar VIRTUE
VIRTUE RESULTS: LONGEST RUNNING SYSTEM
Applications:
Voltage regulation
Peak shaving
Grid contracts
Results: 31% reduction in
their electricity costs
CLIENT: Retail Distribution Centre
LOCATION: London, UK
TECHNOLOGY: BESS and VR

24. Applications:
Renewable firming
Voltage regulation
Supply resilience
Peak shaving
Grid contracts
Results: 57.3% energy
reduction
VIRTUE RESULTS: RENEWABLE FIRMING
CLIENT: Agriculture/Farming
LOCATION: Norfolk, UK
TECHNOLOGY: BESS & PV

25. VIRTUE DEMAND SIDE RMM
Remote Monitoring and
Management (RMM) of
load control outputs for
demand side programs
Track and continually
report on the status of the
battery system and the
condition of the supply
Warn when a problem is
detected and pre-set
limits are close to
exceeding threshold
values

26. STORAGE TECHNOLOGIES
Item Specification
Type NCM-LiNiMnCoO2
Cell Dimensions 173.9 x 45.6 x 125.7mm
Cell Weight 2.1kg
Nominal Cell Capacity 94Ah
Nominal Cell Voltage 3.68V
Nominal Cell energy 345.9Wh
Dimensions (Module) 448 x 510 x 161mm
Module Weight 55kg
Nominal Module Capacity 94Ah
Nominal Module Voltage 80.96V
Nominal Module Energy 7.61kWh
Upper Limit Voltage 4.15
Lower Limit Voltage 3.2
Operating Temperature Range -25 to 50°C
Storage Temperature Range -40 to 60°C
Humidity 0-85%
Max Continuous Charging Current 94A-1C
Max Discharging Current 94A-1C
Charging Method CC-CV
Standards
ISO 14001, ISO 9001, ISO –TS 16949 & CE marking, UL
listed

27. VIRTUE: PHOTOS OF SOME EXISTING SYSTEMS
A 1.25MW containerised solution
(ASDA – HESTON – May 2017)
Built into an existing room – 100KW
(United Utilities – Burry – March 2015)
Due to the bespoke nature of the solution, VIRTUE can be customer built to fit your footprint and can
be fit externally or internally.

28. VIRTUE: PHOTOS OF SOME EXISTING SYSTEMS
A 250MW containerised solution
(ASDA – Newquay)- June 2015
1.15MW containerised solution – Internal View
(ASDA – Swindon Haden – Jan 2018 )

29. VIRTUE: PHOTOS OF SOME EXISTING SYSTEMS
A 1.5MW containerised solution
(BEMIS Flexible Packaging – Dec 2017)
A 500KW containerised solution
(Osprey – Oct 2017)

30. VIRTUE: PHOTOS OF SOME EXISTING SYSTEMS
A 200KW – Built into a room
(East Anglian Farmers– Sep 2017)
A 1MW containerised solution
(Sussex – October 2018)

31. https://www.youtube.com/watch?v=4Iyi4b0I_Co&feature=youtu.be
VIRTUE: INSTALLATION TIMELAPSE VIDEO

32. VIRTUE: ZERO CAPITAL OUTLAY OPTION (STaaS)

33. Analysis of half
hourly data, site
information and
technology
opportunities
FROM CONCEPT TO COMPLETION
Powerstar delivers a full concept to completion service. The below flowchart
shows the step by step process taken to ensure a fit for purpose solution is
designed, delivered and verified
Initial submitting
of enquiry and
project outline
Powerstar operates in a transparent manner and its team of experts are on hand
throughout the entire project to ensure a fully supported solution is delivered.
proposal
following
discussion of
best scenario
and arrangement
of commercial
agreement
Commissioning
of solution
delivered with
minimal
disruption to site
operations
Go live of
technology
including remote
monitoring
platform to
measure results
and optimise
benefits

34. THANK YOU FOR LISTENING.
ANY QUESTIONS?
www.powerstar.com