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India’s first green office building using solar power comes up in Delhi

According to reports, stepping in to join a global trend of adopting green technology for running office premises through harnessing renewable source of energy, the Prime Minister Manmohan Singh on Tuesday dedicated India’s first ‘zero net energy’ building to the nation.

With an installed capacity of 930kw peak power, the building – called Indira Paryavaran Bhawan — has the largest roof top solar system among multi storied buildings in India.

Located here on Jorbagh Road, the building has provision to accommodate about 600 officials of the ministry of environment and forests. It was constructed at the cost of Rs 209 crore.The zero-net energy building – also called Net Zero Building – is a structure with zero net energy consumption where the total amount of energy used in the premises on an annual basis is more or less equal to the amount of renewable energy created on the site.

Many countries in Europe have been using green technology to cut their ‘carbon foot-prints’ for the sake of cleaner environment.

The solar system at the roof-top of the Indira Paryavaran Bhawan has been generating power since November last year. The electricity, generated there, is being fed to the local grid of the New Delhi Municipal Council (NDMC). The building is designed in such a way that 75% of natural daylight is utilised to reduce energy consumption.

“Total energy savings of about 40% has been achieved by adoption of energy efficient ‘Chilled Beam’ system of Air Conditioning. This is an innovative air conditioning system, where air conditioning is done by convection currents rather than air flow through diffusers and chilled water is circulated right up to the diffuser points unlike the conventional systems”, said an official statement.

The building has an earthquake resistant structure with a total plinth area of 31,488sqm. The building covers only 30% of the plot area.

More than 50% area, outside the building, is a soft area with plantation and grassing. Even circulation roads and pathways are a soft area to enable ground water recharge.

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