Intersolar Europe 2014: Bosch presents innovative solutions for decentralized energy systems Best use of renewable energy via a range of storage technologies

  • Smart connectivity for heat pumps and photovoltaic systems
  • Controlling highly efficient air/water heat pumps via smartphone
  • Electricity storage system for pioneering housing complex
Add to my press materials
Save text
  • May 19, 2014
  • Thermotechnology
  • Press releases
  • Images: 1

press release

Stuttgart – At Intersolar Europe 2014 (June 4-6) in Munich, Bosch will show how smart connectivity can be implemented for electrical and thermal energy using a photovoltaic system combined with the latest in heat pump technology. Bosch will be demonstrating the solution using the SWI-2 heat pump made by Bosch Thermotechnology brand Junkers. This solution allows users to consume the lion's share of the electricity they themselves generate from solar power in their own homes – which dramatically reduces their electricity costs – while also powering the heat pump so it can extract heat from air, water, or the ground and convert it into energy that can be used for heating or hot water. The Bosch system features an energy management system that knows when the heat pump requires electricity and – provided there has been enough sunshine – answers that need with solar power.

At the heart of the smart control system is e.Control, which is connected to the household's electricity meter and monitors power flows within the home. The system is designed to always prioritize supply to any home appliances currently in operation. Should the photovoltaic system connected to a Bosch inverter generate any surplus power, e.Control sends a signal to the heat pump to heat the hot water tank. This means optimum use is made of the household's solar power, since it avoids feeding any surplus electricity into the grid at too cheap a price. What's more, it relieves the public grid.

Integration of electricity storage makes consumers largely self-sufficient
Integrating Bosch Power Tec BPT-S 5 Hybrid storage into this energy system further boosts the degree to which a household can make use of self-generated electricity from the photovoltaic system. Even when the sky is overcast or after sunset, the storage system continues to provide the heat pump with a reliable supply of electricity. If the storage system has been integrated, any surplus electricity is sent to the powerful lithium-ion batteries before a signal is sent to the heat pump. When the hot water tank is heated, electrical power is converted into thermal energy, which in effect increases the stored energy. So running such a system is a large step toward achieving independence from the public grid.

Controlling highly efficient air/water heat pumps via smartphone
At Intersolar, Bosch will also be presenting the new Junkers Supraeco SAO-2 modulating air/water heat pump – one of the first on the market to feature a modulating exterior unit. Thanks to a speed-controlled compressor, the Supraeco SAO-2 always supplies only as much energy as is required. This inverter technology makes the heat pump 11 percent more efficient than previous models. Its reduced electricity consumption is reflected in a drop in CO2 emissions, and it is easily adapted to use in detached or semi-detached houses. As standard, the heat circuit's flow temperature never exceeds 62 degrees Celsius during heat pump operation. The Supraeco SAO-2 can actively cool rooms and can be operated via the internet without having to install any additional hardware. The IP gateway required for web communication is already integrated, paving the way for convenient operation via smartphone or tablet. Junkers will soon be introducing its heat pump app JunkersHome. The Supraeco SAO-2 has also been classed “smart grid ready.”

Electricity storage/battery system for pioneering housing complex
Bosch Energy Storage Solutions will also be at Intersolar, presenting a modular, safe, and turnkey storage solution for housing complexes. The Bosch turnkey storage system uses lithium-ion technology, is around 7 meters wide, 0.6 meters deep, and 1.8 meters tall, and is designed to be installed in an electrical services room. Its capacity and electronics are tailored to the requirements of the complex's power grid. Thanks to its power of 50 kilowatts, the battery can be fully charged or discharged in two hours. Its inverter enables it both to feed electricity into to the grid and to recharge from it. The means by which the battery system is controlled, in combination with Bosch's expertise in the right way to charge and discharge batteries, extends the battery's operating life. Bosch designs, develops, and builds storage systems on a variety of scales all the way up to the megawatt-hour range. Bosch is supplying just such an adaptable energy storage system to a housing complex comprising 180 row houses currently being built in Kelsterbach near Frankfurt. The storage system has an installed capacity of 135 kilowatt hours, which is enough to power ten average four-person households for a day.

Bosch booth at Intersolar Europe 2014: Hall B3, booth 310

More information is available online:
Bosch supplies energy storage system for pioneering housing complex
How electricity storage can smooth the path toward alternative forms of energy

Back to overview

Bosch Thermotechnology is a leading European manufacturer of resource-efficient heating products and hot water solutions. In fiscal 2013, the company generated sales of 3.12 billion euros (66 percent outside Germany) and employed approx. 13,500 people. Bosch Thermotechnology has strong international and regional brands and manufactures a diversified product range in Europe, America and Asia.

Further information is available online at

Bosch Power Tec GmbH is a 100% subsidiary of Robert Bosch GmbH and was founded in January 2011. The business purpose is the development and sales of electronic power components for the use of renewable energies. The portfolio includes highly-efficient solar inverters, pre-fabricated inverter stations, system management solutions and pioneering electricity storage technologies. Extensive service and maintenance contracts for every product group enhance the Bosch Power Tec range.

You can find more information at

The Bosch Group is a leading global supplier of technology and services. In 2013, its roughly 281,000 associates generated sales of 46.1 billion euros. (NB: Due to a change in accounting policies, the 2013 figures can only be compared to a limited extent with the 2012 figures). Its operations are divided into four business sectors: Automotive Technology, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 360 subsidiaries and regional companies in some 50 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2013, the Bosch Group invested some 4.5 billion euros in research and development and applied for some 5,000 patents. This is an average of 20 patents per day. The Bosch Group’s products and services are designed to fascinate, and to improve the quality of life by providing solutions which are both innovative and beneficial. In this way, the company offers technology worldwide that is “Invented for life.”

Additional information is available online at and,

PI8575 - May 19, 2014

Your contact person for journalists

Christian Hoenicke

+49 711 811-6285 Send Email

Share this information