Integrating Renewable

Energy and HydrogenSmart solutions for future energy systems

with Siemens electrolysis system – Silyzer

www.siemens.com/silyzer© Siemens AG 2018

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April 2018Page 2 Siemens Hydrogen Solutions

Significant changes in energy systems…

Smart Street Lighting

PrivateSolar

Electrical Vehicles

Avoidance of non

technical losses

Hydrogen Storage

… to distributed energy

and bidirectional

energy balancing

Balancing of generation

& consumption

Load management &

peak avoidance

Resiliency through

automatic outage

prevention & restoration

CO2 avoidance & cost

curtailment

Wind Parks Offshore Large Scale

PV Plant

Pumped Storage Power Plant

Smart Distribution

End-to-end Management

Storage Solutions

Cost optimization and

improved security of

supply

Smart Transmission

Wind Parks Onshore

RailMicrogrids

Diesel Generator

Medium Voltage DC Connection

Page

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April 2018Page 3 Siemens Hydrogen Solutions

Source: TU Berlin, Prof. Erdmann,

extrapolated for the year 2020

2) total demand Germany roughly 600.000 GWh

Power generation

and load curves

Curtailment 1)

“Energiewende” and integration of renewable energy

... will challenge the energy industry in many countries

1) source: https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Energie/Unternehmen_Institutionen/Versorgungssicherheit/Stromnetze/System-_u_Netzsicherheit/Kurzinformationen_Q1_2016.pdf?__blob=publicationFile&v=1

Why will energy storage solutions be so important?

• Grid stability and power reserve

• Wind Power & PV connect via power electronics to the grid are very different to sync. generators

• RE are causing significant fluctuations in generation, which require control power reserve (to be provided

by energy stored from renewables) -

• Supply security and energy reserve

• Seasonal characteristics of RE (less PV during cold seasons, less Wind during hot seasons)

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April 2018Page 4 Siemens Hydrogen Solutions

Principle of PEM-Electrolysis

-+

-+

Real Wind data

0%

50%

100%

150%

200%

0 10 20 30 40 50 60 70 80

Betriebsstunden

P s

oll,

P i

st

Psoll Pist

-20,0%

-15,0%

-10,0%

-5,0%

0,0%

5,0%

10,0%

15,0%

20,0%

0 10 20 30 40 50 60 70 80

Betriebsstunden

Pso

ll-P

is

t

Psoll-Pist

Operating hours

Extreme Dynamic: Comparison of target & actual power

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April 2018Page 5 Siemens Hydrogen Solutions

Energiepark Mainz

World’s largest PEM electrolysis facility in 2015

Facts & figures

• Customer: Energiepark Mainz

(JV of Linde and Mainzer

Stadtwerke)

• Country: Germany

• Installed: 2015

• Product: Silyzer 200

3.75MWrated power / 6.0 MW peak power

(limited in time) based on three

Silyzer 200

Green hydrogen is

fed into the local

natural gas grid.

Use cases

Challenge

• Installation of three SILYZER 200 with a maximum power consumption of 6 MW

• Highly dynamic power consumption

• State-of-the-art process control technology based on SIMATIC PCS 7

• Hydrogen processing, condensing, and storage (provided by Linde)

• Installation of world’s first PEM electrolysis plant in the multiple megawatt range

• Provision of balancing energy

• High degree of automation

Solutions

Hydrogen for

regional filling

stations.

Delivery to

surrounding

industrial

companies.

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April 2018Page 6 Siemens Hydrogen Solutions6

Energiepark MainzQualification for grid services

participation control power market starting in Q2 / 2016

-1,500 MW

-1,000 MW

-500 MW

0 MW

500 MW

1,000 MW

1,500 MW

0:00h 6:00h 12:00h 18:00h 24:00h

SR

L-B

ed

arf

Demand in secondary control power (2nd CP) and conceivable use of a PtG plant

BETR. POS BETR. NEG

0 MW

1 MW

2 MW

3 MW

4 MW

Ein

satz

PtG

-An

lag

e

Tagesverlauf (14.01.2015)

-

1,000

2,000

3,000

4,000

5,000

6,000

13:00:00 13:15:00 13:30:00 13:45:00 14:00:00

po

wer

[kW

]

Soll-Leistung Ist-Leistung

source: own measurements

required qualification

power slope

measured

power profile

de

ma

nd

in

2n

dc

on

tro

l p

ow

er

positive 2nd CP negative 2nd CP

op

era

tio

n o

f P

tGp

lan

t

intraday Jan 14, 2015

Energiepark Mainz – qualified for ancillary services (secondary) already

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April 2018Page 7 Siemens Hydrogen Solutions

2018 – 2023+

Silyzer portfolio scales up by factor 10 every 4-5 years

driven by market demand and co-development with our customers

2011 – 2015

2015 – 2018

>2030

Silyzer 100

100 – 300 kW

Lab-scale

Silyzer 300

>10 MW class

Sales release 2018

>1,000 MW

First investigations

in cooperation with

chemical industryNext generation

Silyzer >100 MW

Under development

Silyzer 200

1 MW class

Current commercial

product

Silyzer portfolio roadmap

Reduction of H2 production

cost (€/kg H2)

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April 2018Page 8 Siemens Hydrogen Solutions

Silyzer 200

High-pressure efficiency in the megawatt range

20 kgHydrogen production per

hour

60 kWhSpecific energy

consumption for 1 kg

hydrogen

5MWWorld’s largest operating

PEM electrolyzer system in

Hamburg, Germany

1.25MWRated stack capacity

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April 2018Page 9 Siemens Hydrogen Solutions

Silyzer 300 –

the next paradigm in PEM electrolysis

75%System efficiency

(higher heating value)

17.5 MWper full module array

(24 modules)

Silyzer 300 – module array

(24 modules)

340 kghydrogen per hour

per full module array

(24 modules)

24 modulesto build a

full module array