Zukunft. Sicher. Machen.

Data Centres as Partners of the Energy Transition

Jason Yates – Technical Services Manager, Riello UPSDario Hernandez – Product Manager, RWE

DCW London - March 2020

2

An Evolving Energy System ▪ Transition to a decentralised zero carbon system requires:

o Increased flexibility from demand/generation

o Frequency regulation to compensate lower synchronous generation

▪ Data Centres can contribute to the energy transition as prosumers

▪ Master+ is a UPS-Battery solution specifically designed to:

o Profit from energy markets without taking energy market risks

o Reliability increases due to 24/7 monitoring and typically an extended backup time

3

Innovative UPS-Battery-SystemMaster+ Solution 1

2

3

4

▪ Holistic solution consisting of four components:

+ Extended warranty on main system components

Highly efficient UPS1

Cycle proof premium battery2

Integrated control system3

Route-to-Market Contract4

4

UPS Master+

▪ Smart Grid Ready

▪ True On-line operation

▪ High Efficiency up to 95.5% in On-line mode

▪ kW = kVA (pf1) -10°C to 40°C without any downgrade in power

▪ Full IGBT and DSP based technology

▪ High fault and short-circuit capacity

▪ Multiple power options for flexibility

▪ Parallel mode for resilience

▪ Resilient proven technology

▪ Galvanic isolation

▪ 5 year warranty

2 x 200kW Master+ UPS Pilot project at RWE HQs, Essen, Germany

5

Battery Storage System (1/2)

▪ Cycle proof premium lead acid battery from established producers

▪ Space saving compact battery arrangement

o I.e. pilot project: 4x usable capacity with only +20% higher surface area

▪ Sufficient battery capacity for critical equipment support and commercialisation

▪ Real time battery monitoring for predictive maintenance

▪ Intelligent battery charge/discharge control

▪ 5 year warranty*

*Maintenance contract mandatory

2 x 240 400Ah; 2 x 192kWh nominal; Rack size (LxWxH) 4350 x 700 x 2100mm

Pilot project at RWE HQs, Essen, Germany

6

▪ Battery is virtually split into a backup and a commercial segment

▪ Backup segment represents in general 30% of the total useable capacity

o This capacity is configured and controlled by the UPS and cannot be accessed by RWE → The backup segment is preserved

▪ SoC oscillates in general between 60% and 70% during normal operation

o During a disruption of the supply grid, the Data Centre typically has access to an extended backup autonomy

Battery Storage System (2/2)

0%

20%

40%

60%

80%

100%

Backup Segment

Battery useable capacity

SoC range normal operation

Commercial Segment

7

DATA CENTRE

Control System

UPS Master+

Simplified Schematic Diagram of Control System

▪ Integrated control system allows to monetisesolution in energy markets

▪ High IT security design

▪ Priority of the UPS is always to protect the critical infrastructure.

▪ In case of grid disruption it turns into protection mode and does not accept any command

Battery Monitoring System

(Battery)

UPS controller

(UPS)

RWE CONTROL CENTRE

Remote Terminal Unit

(Switchgear cabinet)

Modbus TCP

Modbus RTU

IEC -104M2M/VPN

State of Charge

SCADA Secure Network

Operating mode/setpoint

Grid frequency/SoC

Commercial Operating Mode/set point

Grid frequency/SoC

8

0 100 200 300 400 500 600

RWE-RielloMaster+

StandardUPS System

UPS Battery + Installation

Route-to-Market Contract ▪ RWE/Riello provides system to participate in the energy markets with energy market risk taken by RWE

o Frequency Response

o Grid cost avoidance

▪ DC owner/operator gets upfront discount battery

+ Extended warranty in main components

+ Remote Control and 24/7 Monitoring

+ Preventive maintenance

+ Extended backup time

+ Reduced grid charges*

▪ In return RWE gets usage right for the commercial segment of the battery

* For illustration purposes only. Actual costs are project dependent

Battery cost50% lower*

Comparison of 8 x 400kVA project costs*, k£

9

Frequency Response/Peak Shaving

500

kW

▪ The power grid operates at 50Hz

▪ Master+ helps to stabilise the frequency at 50Hz

o If the frequency falls below 50Hz, the Master+ battery is discharged and vice versa

o The extent of the frequency deviation defines charging and discharging volumes

▪ The batteries are perfect for providing frequency response as they can instantly deliver full capacity in both directions profiting from the market

▪ Depending on the location, grid charges can be reduced via peak shaving

Frequency is above 50Hz,

battery is charged

Frequency is below 50Hz,

battery is discharged

Detail of Master+ control panel blue line = grid frequencyred line = power requestedyellow line = power provided

10

Integrated in the existing infrastructure

▪ Master+ uses the redundant power connection capacity in Data Centres to provide ancillary services (i.e. UPS, switchgear, transformers, etc.)

▪ Master+ installation does not differ from a standard UPS system

▪ RWE invests in a larger premium batterywith a virtual split

▪ Shared infrastructure reduces the cost for both parties

Most common power supply infrastructure

for a DC with 1MW IT load

Diesel Gen

Power Chiller

IT load 1MW

servers, storage, network

Climate

control

IT room

Climate

control

UPS

Master+ 1MW Back Up

Substation 2

1MW

Power

distribution,

switchgear

Diesel Gen

Power Chiller

CommercialUPS

Master+ 1MW

Substation1

1MW

Power

distribution,

switchgear

Back Up

Commercial

Batt

ery

Batt

ery

LV room

11

Master+ is live!

▪ Essen, Germany, RWE Headquarters:o Commissioned Sept-2018o 2 x 200kVA Master+

o 2 x 240 - 400Ah

▪ Southampton, UK. RWE Hythe Power planto Commissioned Dec-2019o 1 x 200kVA Master+

o 1 x 240 - 400Ah protecting generation auxiliary equipment

o Open to visitors2 x 200kW Master+ UPS

Pilot project at RWE HQs, Essen, Germany

1 x 240-400Ah; 192kWh nominal; Pilot project at Hythe Power Plant

12

Commercial project: Data Centre

▪ New Data Centre Ruhr area- Germany Commissioned in Dec 2019o Saving costs by helping balancing

the grido Higher energy storage capacity

monitored 24/7

▪ 2 x 250kW Master+ UPS with 2 x 240 cells 600Ah + 1.1MW emergency generator

▪ Expansion every year until 2024 up to 8 x 250kW + additional power generator

▪ TÜViT TSI.Standard incl. DIN EN 50600 certification in preparation

2 x 250kW Master+ UPS 2 x 240 600Ah; 2 x 288kWh nominal;

Rack size (LxWxH): 2 x 3018 x 662 x 2107mm

13

Thank you for your attentionAny questions?

Visit us at the stand D920 or

contact us in at sales@riello-ups.co.uk or flexservices@rwe.com

14

Disclaimer

This document contains forward-looking statements. These statements reflect the present opinions, expectations and assumptions of the management and are based on information the management has at its disposal at the present time. Forward-looking statements contain no guarantee for the occurrence of future results and developments and are associated with known and unknown risks and uncertainties. The real future results and developments can therefore on the basis of different factors fundamentally deviate from the expectations and assumptions expressed here. These factors particularly include changes in the general economic situation and the competitive situation. In addition, the developments in the financial markets, exchange rate fluctuations, national and international changes in the law, particularly regarding tax regulations, and other factors can have an influence on the future results and developments of the company. Neither the company nor a company associated with it takes on an obligation to realise the statements contained in this announcement.