India : Solar Thermal Power plant
|Total savings:||5,000 tonnes of CO2 per year, over 10 years|
|Technology:||Electricity is generated from solar energy, rather than as usual in India with coal-fired power|
|Local environment:||Improvement in air quality by avoiding burning of fossil fuels|
|Further advantages:||Job creation, Training of staff|
|Project partner:||World Renewal Spiritual Trust (WRST)|
Coal is the primary energy source
Indias rapidly growing energy demand is largely met by coal-fired power. But even by utilizing large amounts of coal energy, the supply with electrical energy is not secured. Many rural areas aren´t yet connected to the electricity grid and the metropolitan areas suffer from frequent power outages. To cope with the high energy demand and insufficient transmission infrastructure, solar energy becomes increasingly important. Research and development in solar heat and photovoltaic technologies are supported by the Indian government. Through frugal innovation, technologies are adapted to the Indian market.
For this purpose the World Renewal Spiritual Trust (WRST), a public charity and sister organization of the Brahma Kumaris Institution, established a Department of renewable energy technology. Since 1992 the trust develops and promotes solar technology. India One is the biggest project undertaken so far.
Innovative storage technology
India One uses 770 in-house developed 60 m² parabolic solar dishes with dual axis tracking system. The concentrated solar rays are focused towards highly efficient cavity receivers, which are mounted in front of each dish. The receiver is integrated into a heavy iron casting, serving as thermal storage, which is heated up to 450°C. The heat exchanger coil is embedded into this three and a half ton cylinder, heating water up to a temperature of 450°C. This vaporized water is then transported to a heat turbine with a peak capacity of one megawatt. The static cast iron receivers are able to store the thermal energy up to 16h, allowing the plant to be operated 24h. The generated electricity and heat will be used in the nearby Brahma Kumaris Shantivan Campus.
In contrast to other storage technologies, requiring environmentally harmful substances to store the sun's energy, the steel can be melted again after the end of its service life. Thus, the storage technology is more environmentally friendly than comparable solutions. Most of the parts of the plant are fabricated in the nearby workshop, employing 200 technicians and qualified workers. Local production reduces costs and represents a new source of income for the region. In addition, staff gets training in solar technology to increase awareness and knowledge of this technology. Only the mirrors itself must be imported and the iron casting cylinders are produced in Gujarat and transported to the site.
Our local partner
World Renewal Spiritual Trust (WRST) is a daughter organization of Brahma Kumaris. As a pioneer in solar technology, the engineers have developed the first large-scale solar kitchen 20 years ago - a technique that is now used all over India. The project "India One" is also financed by the Federal Ministry of the Environment and supported by GIZ and the Frauenhofer Institute for Solar Energy Systems.