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BMTC to install solar panels in its office building

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By NewsGram Staff Writer

Bengaluru: Bangalore Metropolitan Transport Corporation (BMTC) is all set to add one more initiative in its attempts to go green. It is planning to install solar panels on the terrace of its main office building at Shantinagar in Bengaluru, according to a report published in Vijaya Karnataka, a Kannada daily.

Solar panel

The office building in Shantinagar consists of varied departments, hotels, shopping malls, shops, and Traffic and Transit Management Centre (TTMC) bus-stand. Further, BMTC has lent premises for other departments like excise department.

The combined electrical consumption of all these entities would be pegged at around 3.7 lakh units per month costing around 32-33 lakh rupees per month.

In order to reduce the expenditure towards electric bills, the BMTC has decided to use the space available on the terrace of its building and has decided to call tenders from solar companies.

The area available on the terrace is around 1.2 lakh square feet and BMTC hopes to generate around 1 lakh units of electricity per month from the solar panels. The cost of installation of these solar panels is expected to be around 5-6 crores. BMTC also intends to sell any excess electricity generated to Bangalore Electricity Supply Company (BESCOM).

The solar company which would get the tender to install the solar panels is also expected to run the unit for 15 years, after which the BMTC itself will maintain the unit. During these 15 years, the solar company will sell the electricity to BMTC at rates which are 1-2 rupees lesser per unit than what it will charge BESCOM. This is expected to save lakhs of rupees per month for BMTC.

This is not the first green initiative that BMTC has taken. Previously, it had introduced India’s first Electric Bus in 2014. Further, it has been working towards Solar charged buses as well.

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Now Print perovskite Solar Cells easily and at the cost similar to bringing out a Newspaper!

Researchers of University of Toronto Engineering have found that the solar cells manufactured with perovskite mineral could lead to low-cost solar panels

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Solar panels absorbing sunlight. Pixabay

Toronto, Feb 18, 2017: Researchers have found a novel way to print perovskite solar cells easily and at a cost similar to bringing out a newspaper!

A team, led by Hairen Tan from University of Toronto Engineering found that the solar cells manufactured with perovskite mineral could lead to low-cost, printable solar panels capable of turning nearly any surface into a power generator.

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“Economies of scale have greatly reduced the cost of silicon manufacturing,” Ted Sargent, an expert in emerging solar technologies, said in a university statement.

“Potentially, perovskites and silicon cells can be married to improve efficiency further, but only with advances in low-temperature processes,” added Sargent, who is also the Canada Research Chair in Nanotechnology.

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Perovskite solar cells depend on a layer of tiny crystals — each about 1,000 times smaller than the width of a human hair — made of low-cost, light-sensitive materials.

Because the perovskite raw materials can be mixed into a liquid to form a kind of ‘solar ink’, they could be printed onto glass, plastic or other materials using a simple inkjet printing process.

“The most effective materials for making electron selective layers (ESLs) start as a powder and have to be baked at high temperatures, above 500 degrees Celsius,” said Tan.

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Tan noted that perovskite solar cells using the older, high-temperature method are only marginally better at 22.1 per cent and even the best silicon solar cells can only reach 26.3 per cent.

Tan’s perovskite solar cells were also stable and retained more than 90 per cent of their efficiency even after 500 hours of use. (IANS)

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