100 collectors supply a hotel with hot water Bosch realises large-scale solar thermal system in Bangalore Over 30 tons of carbon saved annually

  • Planning, installation and commissioning of a plant with a total output of approx. 150 kilowatts
  • 208 square metres of collector surface
  • Information events and training for Bosch partners
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  • July 21, 2015
  • Thermotechnology
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press release

Bangalore (India)/Wetzlar (Germany) – Bosch Thermotechnoloy has taken a large-scale solar system into operation in Bangalore, India. A total of 100 solar thermal collectors from Bosch now afford maximum hot water comfort in the “Novotel Bengaluru Techpark”, a business hotel in the South Indian city of Bangalore. The project was realised under the Renewable Energy Solutions Programme initiated by the German Energy Agency (Deutsche Energie-Agentur GmbH  dena) and sponsored by the German Federal Ministry for Economic Affairs and Energy (BMWi) under its Renewable Energies Export Initiative.

About one third of the hotel roof is now covered by rack-mounted collectors. The solar heat is stored in a 6,000 litre buffer tank, which supplies the hot water to the 215 hotel rooms, the restaurant kitchens and the in-house laundry as needed. Before the system was taken into operation, water was heated by a diesel generator, which consumed about 17,000 litres of fuel per year. The phasing out of public fuel subsidies and the deregulation of the Indian diesel market made this form of hot water generation especially uneconomical.

The solar thermal system from Bosch was taken into operation in December 2014 and has since covered about half of the hotel’s hot water requirements – also at peak load times. In the first six months of operation, some 4,700 litres of diesel and, consequently, 15 tons of carbon were saved – which adds up to about 30 tons for a full year.

Bosch partners use the system for information and training purposes
The new solar thermal system from Bosch is great benefit not only in environmental and economic terms. It also benefits Bosch’s partners such as engineers, planners, architects and, most importantly, local installers, who may regularly use the system for training purposes and information events. This underlines the importance of the growing Indian market for renewable energy, while at the same time providing the knowledge and expertise required for the installation and operation of solar thermal systems.


Journalist contact:
Jörg Bonkowski,
Phone +49 711 811-1614

Deutsche Energie-Agentur GmbH (dena)
Deutsche Energie-Agentur GmbH (dena) - the German Energy Agency - is the centre of expertise for energy efficiency, renewable energy sources and intelligent energy systems. dena's aim is to ensure that energy is used in both a national and international context as efficiently, safely and economically as possible with the least possible impact on climate. dena is working with stakeholders from the worlds of politics and business and from society at large to achieve this aim. Shareholders in dena are the Federal Republic of Germany, KfW Bankengruppe, Allianz SE, Deutsche Bank AG and DZ BANK AG.

Renewable Energies Export Initiative
The Renewable Energies Export Initiative supports German companies – especially small and medium-sized ones – in developing foreign markets and exporting renewable energy technologies. At the same time, the Initiative promotes the increased use of renewable energies abroad in order to increase the market potential for German technologies and German expertise. The Renewable Energies Export Initiative was launched in 2002 on the basis of a resolution adopted by the German government. The Initiative has since been controlled and financed by the BMWi and implemented by numerous partners in Germany and abroad.

dena Renewable Energy Solutions Programme (dena RES Programme)
The German Energy Agency’s dena RES Programme supports companies from the renewable energy sector in developing new markets. To this end, energy technology is installed in high-profile facilities in attractive target markets and supported by extensive PR, marketing and training activities. The aim of these beacon projects sponsored by the German Federal Ministry for Economic Affairs and Energy (BMWi) under its Renewable Energies Export Initiative is to demonstrate the quality of German products in the field of renewable energy sources and facilitate a sustainable entry into new markets for the participating companies.

Bosch Thermotechnology
Bosch Thermotechnology is a leading European manufacturer of energy-efficient heating products and hot water solutions. In fiscal 2014, the company generated sales of 3.1 billion euros (67 percent outside Germany) and employed approx. 13 400 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

The Bosch Group is a leading global supplier of technology and services. It employs roughly 360,000 associates worldwide (as per April 1, 2015). The company generated sales of 49 billion euros in 2014.* Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiary and regional companies in some 60 countries. Including its sales and service partners, Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2014, Bosch applied for some 4,600 patents worldwide. The Bosch Group's strategic objective is to create solutions for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.”

Additional information is available online at,,

*The sales figure disclosed for 2014 does not include the former joint ventures BSH Bosch und Siemens Hausgeräte GmbH (now BSH Hausgeräte GmbH) and ZF Lenksysteme GmbH (now Robert Bosch Automotive Steering GmbH), which have since been taken over completely.

PI9000 - July 21, 2015

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