India can meet its energy needs without nuclear plants: Study

October 4, 2012

 

nuclear_plantsBangalore, October 4: India's energy needs can be met entirely by solar and other renewable sources, says a new study by two professors at the Indian Institute of Science (IISc) in Bangalore.  Their report published in the journal Current Science may add ammunition to the anti-nuclear agitation in India.

 

The analysis by Hiremath Mitavachan and Jayaraman  Srinivasan of  IISc's Divecha Centre for Climate Change overturns the argument that nuclear power is essential for India because the country does not have enough land to exploit the potential of solar energy in India.

 

According to their study, 4.1 percent of the total uncultivable and waste land area in India  is enough to meet the projected annual demand of 3,400 terawatt-hour (TWh) by 2070 by solar energy alone (1 terawatt-hour per year equals 114 megawatts). The land area required will be further reduced to 3.1 percent "if we bring the other potential renewable energy sources of India into picture", they claim. They conclude that land availability is not a limiting constraint for the solar source as believed.

 

They say their calculations are based on present-day solar photovoltaic (PV) technology and do not include higher efficiencies achieved by new solar cells. Neither have they considered roof-top PV systems that can be established without any need for additional land.

 

The IISc researchers' conclusion is in conformity with that of a report prepared last year  by the Australian government which said: "There is more than enough suitable land in India, with high direct beam solar, to meet the entire nation's electricity needs in principle."

 

Convinced that sunlight differs from other energy sources in the way it uses the land, the researchers compared the land-use pattern of three primary energy sources - coal, nuclear and hydro - with solar energy.  They then calculated the percentage of India's land area that would be required to meet the future projected energy demand. Coal power plants not only transform the land around the facility but also require land for mining coal and its upstream processing, the authors note.  An average dam displaces 31,340 persons and submerges 8,748 hectares of land. The direct land footprint of a nuclear power plant includes power plant area, buffer zone, waste disposal area and the land that goes into mining uranium.

 

"Our study shows that solar power plants require less land in comparison to hydro-power plants and are comparable with coal and nuclear energy power generation when life-cycle transformations are considered," Srinivasan said.

 

While nuclear and fossil fuel-based technologies must continuously transform some land to extract the fuels or dispose of the waste, this is not the case with solar plants. In fact, the same land used for PV solar power plants can be utilised for other purposes like grazing.

 

The roof-top solar power technology, along with that proposed by IISc professors, "will be able to meet most of the electricity demand, and has the potential to transform the power sector," says Shankar Sarma, a power policy analyst  and author of forthcoming book "Integrated Power Policy."

 

Atul  Chokshi of the IISc Department of Materials Engineering and an expert on solar energy agrees. He reported recently  that a three kilowatt  rooftop solar panel system on the 425 million households   can generate a total energy per year 1900 TWh - half of the projected energy demand by 2070.

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News Network
January 15,2020

Kolkata, Jan 15: The arrows of Mahabharata's Arjuna had atomic power, claimed West Bengal Governor Jagdeep Dhankhar, drawing sharp criticism from academicians, even as he joined a long list of politicians who have in recent years given bizarre interpretations linking mythology with science.

Speaking at the 45th Eastern India Science Fair and 19th Science and Engineering Fair on Tuesday, Dhankhar also claimed that flying objects existed during the period of Ramayana.

"It is said that the plane was invented in 1910 or 1911, but if we delve into our old scriptures we will see in Ramayana, we had 'uran khatola' (aircraft)," he said.

"Sanjaya narrated the entire war of Mahabharata (to Dhitarasthra) not from TV. The arrows of Arjuna in Mahabharata had atomic power in it," Dhankhar said, asserting that the world can no longer afford to ignore India.

According to Sanskrit epic Mahabharata, Sanjay, even after staying away from the battlefield, had narrated what was happening there to Dhritarashtra, who was blind.

Dhankhar, who has been in news for clashes with the Mamata Banerjee government ever since he assumed office in July last year, joins politicians such as Tripura Chief Minister Biplab Deb and UP deputy chief minister Dinesh Sharma to give odd interpretations of mythology.

While Deb had claimed that the internet existed during Mahabharata, Sharma suggested that godess Sita was a test tube baby.

Recently, Puducherry Lt Governor Kiran Bedi was trolled online for sharing a doctored video that claimed, "NASA recorded sound of sun -- Sun chants Om".

Indologist Nrisingha Prasad Bhaduri said governors appointed by the BJP government at the Centre are delving into everything and behave "as if they are know-alls".

"They fail to understand one thing that great writers have very strong power of imagination," Bhaduri said.

Scientist Sandip Chakraborty said such comments only hurt the scientific progress in India at the global forum.

"The ancient writers described all these things based on their imagination. It is true that India made a lot of progress during the ancient period, but such comments only damages the progress made by our scientific community," he said.

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News Network
January 14,2020

Chennai/New Delhi, Jan 14: India's annual electricity demand in 2019 grew at its slowest pace in six years with December marking a fifth straight month of decline, government data showed, amid a broader economic slowdown that led to a drop in sales of everything from cars to cookies and also to factories cutting jobs.

Electricity demand is seen as an important indicator of industrial output in the country and a sustained decline could mean a further slowdown in the economy.

India's power demand grew at 1.1% in 2019, data from the Central Electricity Authority showed, the slowest pace of growth since a 1% uptick seen in 2013. The power demand growth slowdown in 2013 was preceded by three strong years of consumption growth of 8% or more.

In December, the country's power demand fell 0.5% from the year-earlier period, representing the fifth straight month of decline, compared with a 4.3% fall in November.

But in India's western states of Maharashtra and Gujarat, two of India's most industrialised provinces, monthly demand increased.

In October, power demand had fallen 13.2% from a year earlier, its steepest monthly decline in more than 12 years, as a slowdown in Asia's third-largest economy deepened.

Industry accounts for more than two-fifths of India's annual electricity consumption, while homes account for nearly a fourth and agriculture more than a sixth.

The slower demand growth is a blow for many debt-laden power producers, who are facing financial stress and are owed over $11 billion by state-run distribution companies.

India's overall economic growth slowed to 4.5% in the July-September quarter, government data released in November showed, the weakest pace since 2013 as consumer demand and private investment fell.

The government has estimated growth in the current financial year that runs through to March will be the slowest since the 2008 global crisis.

"This reflects overall economic slowdown, because if you look at other high frequency data like diesel consumption, everywhere you are seeing contraction," Rupa Rege Nitsure, chief economist at L&T Financial Holdings.

But India's central bank will not have much scope to cut rates to stimulate the economy because inflation has been rising sharply and reached 7.35% in December compared with 1.97% in January last year.

Economists say India's growth will continue to hover around 4.5% levels in the Oct-Dec quarter.

"In the Oct-Dec quarter as well growth (GDP) will be around the same level as July-September. My estimate for the full year is around 4.7% growth," Nitsure said.

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Agencies
May 14,2020

New Delhi, May 14: India may witness the death of additional 1.2-6 lakh children over the next one year from preventable causes as a consequence to the disruption in regular health services due to the COVID-19 pandemic, UNICEF has warned.

The warning comes from a new study that brackets India with nine other nations from Asia and Africa that could potentially have the largest number of additional child deaths as a consequence to the pandemic.

These potential child deaths will be in addition to the 2.5 million children who already die before their fifth birthday every six months in the 118 countries included in the study.

The estimate is based on an analysis by researchers from the Johns Hopkins Bloomberg School of Public Health published in the Lancet.  

This means the global mortality rate of children dying before their fifth birthday, one of the key progress indicators in all of the global development, could potentially increase for the first time since 1960 when the data was first collected.

There were 1.04 million under-5 deaths in India in 2017, of which nearly 50% (0.57 million) were neonatal deaths. The highest number of under-5 deaths was in Uttar Pradesh (312,800 which included 165,800 neonatal deaths) and Bihar (141,500 which included 75,300 neonatal deaths).

The researchers looked at three scenarios, factoring in parameters like reduction in workforce, supplies and access to healthcare for services like family planning, antenatal care, childbirth care, postnatal care, vaccination and preventive care for early childhood. The effects are modelled for a period of three months, six months and 12 months.  

In scenario-1 marked by 10-18% reduction of coverage of all the services, the number of additional children deaths could be in the range of 30,000 plus over three months, more than 60,000 over six months and above 120,000 over the next 12 months.

Coronavirus India update: State-wise total number of confirmed cases, deaths on May 13

The numbers sharply rose to nearly 55,000; 109,000 and 219,000 respectively for scenario-2, which was associated with an 18-28% drop in all the regular services.

But in the worst-case scenario in which 40-50% of the services are not available, the number of additional deaths ballooned to 1.5 lakhs in the three months in the short-range to nearly six lakhs over a year.

The ten countries that could potentially have the largest number of additional child deaths are Bangladesh, Brazil, Congo, Ethiopia, India, Indonesia, Nigeria, Pakistan, Uganda and Tanzania.

In countries with already weak health systems, COVID-19 is causing disruptions in medical supply chains and straining financial and human resources.

Visits to health care centres are declining due to lockdowns, curfews and transport disruptions, and due to the fear of infection among the communities. Such disruptions could result in potentially devastating increases in maternal and child deaths, the UN agency warned.

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