The future begins at homeThe Junelight Smart Battery

siemens.com/junelight

Imagine a future where we not only generate elec-tricity sustainably in our own homes, but also store it using intelligent systems so that we can use it at any time of the day or night – for reading, cooking, heating or to power our cars.

Why not bring this future into your own home? On the following pages, we will show you how you can cut yourself loose from conventional energy sources, save some hard cash and protect our climate at the same time.

The future begins at home

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With just 1 kWh of self-generated

electricity, I can read a murder

mystery for

100hours by the light

of the bedside lamp* ...

... time enough to find out

‘whodunnit’.

* 10 W LED lamp, consumption 0.01 kW per hour.

Coal-fired electricity, oil-fired heating and petrol-fueled vehicles: private households play a significant part in the production of greenhouse gas emissions and the accel-eration of climate change.

That is why Siemens is already working on the energy supply systems of the future – they will be efficient, clean and all-electric. We are going to help you cover the greatest possible proportion of your energy consumption for electricity, heat and car fuel with clean (solar) power that you have generated yourself.

150 years of pioneering engineering work have given us all the experience we need to help you. Because our wind turbines and power grids are already providing a reliable source of power for billions of people all over the world. We are all too aware of the challenges posed by the energy transition: sunlight and wind are available in infinite quantities, but not always exactly when we need them.

We have developed the Siemens Junelight Smart Battery as a solution to this problem. It has the ability to intelligently store the electricity generated by the sun and wind, and to make it available to you whenever you need it. This system will allow to play an important role in the energy transition, which will do so much to protect our climate.

From wind turbines to electricity storage: innovative engineering for the energy transition.

Together we can change the world so that it stays just as it is

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Capture the sun’s energy during the day and use it to light up the night.

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When the sun is shining during the day, your photovoltaic system generally produces more electricity than your household can consume. If you cannot store this excess power, you have to feed it into the grid and buy it back at expensive rates during the night. The Junelight Smart Battery will help you to ‘self-consume’ the maximum yield from your solar installation. This investment in the future will bring many benefits.

For the environmentWith every kilowatt hour that you generate and reuse yourself, you are saving the planet approximately half a kilogram of emitted CO2 – just check out our example calculation in the spreadsheet on page 19.

For your walletWhereas feed-in tariffs are falling, electricity prices keep going up. Use your own electricity and save some money.

For your off-grid autonomyThe Smart Battery will ensure that the electricity you generate will be available to you when the sun isn’t shining. This means you will be able to enjoy an even greater degree of off-grid autonomous living.

For your propertyBy turning your home into a modern, energy-efficient house, you will be investing in the value of your property.

For the power gridsThe Smart Battery will enable you to avoid overloading the grid on very sunny days, thus ensuring more stable grid operation.

386 quadrillion watts of solar energy reach the Earth’s surface every day. How much of that do you want to use?An intelligent battery storage system protects the environment, cuts your electricity bills and allows you to enjoy autonomous, off-grid living.

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Photovoltaic installation

E-mobility Power grid

Heat pump

Whiteware

Junelight Smart Battery

Morning Noon Evening

Power demand during the day

Solar power production Production > Demand (Storage of electricity)

Demand > Production (Use of stored electricity)

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Maximum consumption of self-generated powerThe Smart Battery will learn your consumption profile over time and ensure that clean energy from your own solar panels will be available whenever you need it.

Higher yieldSubsidies are often conditional on limiting the power infeed, for example, to 50% of the rated output of the photovoltaic system. If the remaining power is not consumed, yield performance will be lost. While conventional batteries store excess energy directly with the result that up to 8% of yield performance is lost, the Smart Battery delays charging on sunny days until later in the day, thereby minimizing curtailment losses to below 2%.

Especially long battery service lifeBecause weather and consumption forecasts are taken into account, the batteries can be charged and discharged smoothly based on predictions. This extends their service life, as it avoids high and fast charging currents in particular. As a result, you can be sure that your battery retains its high capacity even beyond the 10-year warranty period.

What makes the Smart Battery so smart: its charging IQThe charging IQ of the Smart Battery coordinates the charging and discharging procedures based on weather and consumption forecasts.

2004 2006 2008 2010 2012 2014 2016 2018 2020

Ct./kWh

60

50

40

30

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As you can see, the higher the increase in electricity prices and the lower the feed-in tariffs, the more it makes sense to generate, store and consume your own electricity. This graphic shows an example from Germany.

Feed-in tariff

Electricity price

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The Junelight Smart Battery is integrated on the AC side in your domestic mains supply.

AC instead of DC

This offers a number of advantages.

High degree of flexibilityAC-coupled systems can be dimensioned independently of the size of the photovoltaic installation and PV inverter, and can be installed anywhere in the house.

Best tariffs day and nightAAC-coupled systems can draw electricity from the mains grid. This means that you can take advantage of day and night tariffs and that you will be able to participate in electricity trading in the future.

Integration of other power generatorsOther kinds of power generator, such as cogeneration units or miniature wind turbines, can easily be connected to AC-coupled systems because they also supply alternating current instead of direct current.

Greater independence from the gridThe output of AC-coupled systems is not limited by the PV inverter. In other words, during periods of high power consumption, you can utilize the full PV installation capacity and the battery discharge capacity simultaneously, thus reducing the amount of power you need to draw from the grid.

With just 1 kWh of self-generated electricity, I can

travel

25kilometers by

electric scooter*...

...to the weekly market,

for example.

* Electric scooter, consumption 0.04 kW per hour/per 1 km.

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100 cm

160

cmBa

se: 8

cm

18 cm

Animated LED displayA quick look at the stylish digital display that is integrated in the cover will immediately tell you the charging status and whether the battery is currently charging or discharging.

Outstanding designWhen intelligent technology combines with design excellence, it deserves a prize: the iF Design Award 2019 and the Red Dot Award 2019.

Compact, slim-line housingWith a depth of just 18 cm, the Smart Battery can fit into even the smallest space: behind a door, for example, or in a narrow passageway. The battery can be floor-mounted or attached to a wall or ceiling.

Choice of housing colorsYou can choose between modern white or elegant black.

The future looks pretty good

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Expansion housing 9.9 to 19.8 kWh

Basic housing 3.3 to 6.6 kWh

The basic housing holds up to two battery modules of 3.3 kWh each. The expansion housing allows you to add a maximum of six modules for a total capacity of 19.8 kWh.

What is unique about this system? You can flexibly upgrade your installation (if technically feasible) whenever you need more capacity to meet the needs, for ex-ample, of a growing family, an electric car or a heat pump.

With just 1 kWh of self-generated electricity, I can

watch football for

20hours* ...

... or better, a documentary about pandas

* 46-inch LED TV, consumption 0.05 kW per hour.

And fits into your life perfectlyThe Junelight Smart Battery can be expanded on a modular basis to a maximum capacity of 19.8 kWh.

Number of battery modules

Recommended Smart Battery capacity* in kWh

Yearly power consumption in kWh

2,000

3.3 6.6 9.9 13.2 16.5 19.8

3,000

4,500

6,500

8,0009,000

*The proposed capacity is assuming about 75 % self- sufficiency. The actual capacity depends on the size of the photovoltaic system (kWp) and the time of energy demand. That’s why you should adjust your specific design together with your installer.

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Always keep an eye on the energy flows in your smart home. This system gives you direct control over your power consumption and helps you to see where you can save energy and use it elsewhere.

DataAt a glance you can see data relating to photovoltaic production, charging status, mains usage, degree of autonomy, as well as consumption and sale of electricity.

AnalyticsDiagrams provide you with information about your consumption profile based on coverage types (photovoltaics, battery, grid) and an overview of the costs saved and CO2 values.

The energy transition lies in your hands

ServiceThe app allows you to make direct contact with Siemens customer service or your installation engineer, and to control access to your system.

DesignThe Junelight Smart app won over the jury of the world-famous IF Design Award 2019 and the Red Dot Award 2019. Its intuitive user guidance system and clear visual display of the relevant energy values were adjudged to be particularly outstanding.

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As certain as the sunrise every morning

We use lithium-ion batteries in our Junelight Smart Battery because they possess the highest power density. This makes them the perfect energy storage system – provided their safety is assured. For this reason, we are the only supplier who had the system as a whole certified by the VDE rather than just its individual components. Furthermore, we also had our production line certified in order to ensure that we test each individual device before it is shipped.

The test standards for industry often differ from those for private households. Our requirement: always test according to the most stringent standard. In addition, we have integrated a safety concept that ex-ceeds the requirements of the standard: the battery management system, the inverter and the control unit can work independent-ly of one another to shut down the batteries in the event of a fault, thus preventing any potential hazards.

Thanks to certification by the VDE (Association for Electrical, Electronic & Information Technologies) and a three-stage safety concept.

ith just 1 kWh of self-generated

electricity, I can charge my

smartphone

59times* ...

... and leave 706 hours of voice-mail messages for

the kids.

* iPhone X, consumption 0.017 kWh per charge (with 12 hours of talk time per charge).

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Continuous updates for your smart home: with an energy management system that intelligently controls energy flows.

The future begins today

The Junelight Smart Battery is just the first step towards an intelligent and sustainable home. You can use existing communication interfaces to connect your heat pump or a heater in order to increase your self-con-sumption. Data from the energy storage can be used to integrate it into a smart home. Integration into a KNX or Loxone system provides you with unlimited possibilities. Switch on your pond pump when sufficient

sunlight is available, charge your electric vehicle, or control other consumers.

We develop Junelight toward a compre- hensive energy management system. By providing regular software updates free of charge, we will keep your system up to date in the future.

Photovoltaic installation

Intelligent reduction in consumption

Charging station for electric vehicles

Energy management in a

smart home

Heat pump and heating element

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Everything at a glance

Available in black or white

Usable capacity (in kWh)1, 2 3.3 6.6 9.9 13.2 16.5 19.8

Example of CO2 savings calculation (referred to 20 year service life)

Assumption: Consumption (kWh) 2,000 3,000 4,000 6,000 8,000 9,000

Assumption: PV output (kWp) 3 4.5 6 9 12 13.5

Saving (t CO2) 8.1 13 17.5 21.9 26.4 30.8

Data

Dimensions W / H / D (cm) 100 / 80 / 18 100 / 160 / 18

Weight (kg) 78 103 167 192 218 244

Inverter output (kVA) 1.5 3.0 3.5

Battery efficiency > 95%

Maximum inverter efficiency > 96%

Mains connection 3-phase

System AC

Cell technology Lithium-ion (graphite/NMC)

Ambient temperature 0° to 30°C

Guarantee

We guarantee at least 80% of the nominal capacity of the batteries for the first ten years, as well as five years for the other components in the system. The system guarantee can also be extended to 10 years for an additional charge. You can find our detailed guarantee conditions at siemens.com/junelight/guarantee.

1The Smart Battery can be upgraded without time limit up to 19.8 kWh (if technically feasible)

2 Incl. 6% safety margin

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AC-coupled refers to a system that can easily be incorpo-rated on the AC side in the domestic mains supply. An example of this kind of system? The Junelight Smart Battery. Charging IQ is the artificial intelligence integrated in the Smart Battery that learns to understand consumption pro-files. It combines this knowledge with weather forecasts to control charging and discharging operations predictively so as to optimize the consumption of self-generated electricity. Curtailment losses are incurred when excess electricity cannot be fed into the grid as a result of statutory → feed-in limits (e.g. 70% according to German Renewable Energies Act (EEG)), and the battery is already full. Thanks to → charging IQ these can be reduced with the Smart Battery. Energy transition refers to the transition from conventional to renewable energy sources. As the feed-in power of the sun and wind is naturally subject to fluctuation, maintaining a stable energy supply is a highly complicated issue. For this reason, storage batteries capable of buffering these fluctua-tions in generated power are needed. Feed-in limit refers to a percentage maximum value of the installed photovoltaic module power: Currently 70% for installations supported by the German Renewable Energies Act (EEG), and 50% for installations supported by the KfW bank. It results in → losses in yield caused by curtailment. These can be reduced thanks to the → charging IQ however. Feed-in tariff is the amount of money received by the owner of a photovoltaic installation for solar-generated electricity that is not “self-consumed” and is therefore fed into the grid. Since this tariff is falling and electricity prices are ris-ing, it increasingly makes sense to “self-consume” home-generated electricity using the Junelight Smart Battery. Inverter is the component that converts direct current to alternating current – and vice versa. The inverter is an inte-gral component of the Smart Battery system. Optimization of consumption of self-generated electricity describes the intelligent and predictive control of the charg-ing and discharging processes of the Smart Battery → charging IQ. This allows you to cover the maximum possi-ble share of your power consumption from the electricity generated by your own solar installation. Sector coupling refers to the concept of interconnecting and optimizing electrical supply systems, heating supplies, transport and industry in such a way as to reduce CO2 emis-sions and power consumption, and to mitigate power fluc-tuations from renewable energy sources. Energy stores like the Junelight Smart Battery play an important role in achiev-ing these goals. VDE stands for Verband der Elektrotechnik, Elektronik und Informationstechnik (Association for Electrical, Electronic & Information Technologies). It is one of the largest indepen-dent test institutes and is responsible for drawing up electri-cal engineering standards in Germany. The Junelight Smart Battery was verified there.

Glossary

Find out more about Junelight Smart Battery: siemens.com/junelightGermany: 0800 - 586 354 4488 Austria: 0800 - 112 526 Switzerland: 0800 - 563 358E-mail: service.junelight@siemens.com

Published by Siemens AG

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Subject to changes and errors. The information given in this document only contains general descriptions and/or performance features which may not always specifically reflect those described, or which may undergo modification in the course of further development of the products. The requested performance features are binding only when they are expressly agreed upon in the concluded contract.