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
March 31,2020

Thiruvananthapuram, Mar 31: Kerala reported its second COVID-19 death after a 68-year-old man being treated for the virus, died at the Government Medical College Hospital here in the early hours on Tuesday.

The victim, Abdul Aziz, a retired ASI hailing from Pothencode here, was admitted to the isolation ward on March 23 with the symptoms of the Corona infection. He was also suffering from lung and kidney diseases.

Though his first test result for COVID-19 turned negative, the second test result confirmed positive, official sources said.

However, it was not known from where he caught the virus infection. leaving chances for a secondary contract of a COVID-19 patient.

His funeral will take place as per the protocol, the sources added.

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News Network
February 19,2020

New Delhi, Feb 19: India will switch to the world's cleanest petrol and diesel from April 1 as it leapfrogs straight to Euro-VI emission compliant fuels from Euro-IV grades now - a feat achieved in just three years and not seen in any of the large economies around the globe.

India will join the select league of nations using petrol and diesel containing just 10 parts per million of sulphur as it looks to cut vehicular emissions that are said to be one of the reasons for the choking pollution in major cities.

Sanjiv Singh, Chairman of Indian Oil Corp (IOC) - the firm that controls roughly half of the country's fuel market, said almost all refineries began producing ultra-low sulphur BS-VI (equivalent to Euro-VI grade) petrol and diesel by the end of 2019 and oil companies have now undertaken the tedious task of replacing every drop of fuel in the country with the new one.

"We are absolutely on track for supplying BS-VI fuel from April 1. Almost all refineries have begun supplying BS-VI fuel and the same has reached storage depots across the country," he said.

From storage depots, the fuel has started travelling to petrol pumps and in the next few weeks all of them will only have BS-VI grade petrol and diesel, he said. "We are 100 per cent confident that fuel that will flow from nozzles at all the petrol pumps in the country on April 1 will be BS-VI emission compliant fuel."

India adopted Euro-III equivalent (or Bharat Stage-III) fuel with a sulphur content of 350 ppm in 2010 and then took seven years to move to BS-IV that had a sulphur content of 50 ppm. From BS-IV to BS-VI it took just three years.

"It was a conscious decision to leapfrog to BS-VI as first upgrading to BS-V and then shifting to BS-VI would have prolonged the journey to 4 to 6 years. Besides, oil refineries, as well as automobile manufacturers, would have had to make investments twice - first to producing BS-V grade fuel and engines and then BS-VI ones," he said.

State-owned oil refineries spent about Rs 35,000 crore to upgrade plants that could produce ultra-low sulphur fuel. This investment is on top of Rs 60,000 crore they spent on refinery upgrades in the previous switchovers.

BS-VI has a sulphur content of just 10 ppm and emission standards are as good as CNG.

Originally, Delhi and its adjoining towns were to have BS-VI fuel supplies by April 2019 and the rest of the country was to get same supplies from April 2020.

But oil marketing companies switched over to supply of BS-VI grade fuels in the national capital territory of Delhi on April 1, 2018.

The supply of BS-VI fuels was further extended to four contiguous districts of Rajasthan and eight of Uttar Pradesh in the National Capital Region (NCR) on April 1, 2019, together with the city of Agra.

BS-VI grade fuels were made available in 7 districts of Haryana from October 1, 2019.

Singh said the new fuel will result in a reduction in NOx in BS-VI compliant vehicles by 25 per cent in petrol cars and by 70 per cent in diesel cars.

The switchover, he said, is a tedious task as every drop of old, higher-sulphur content fuel has to be flushed out in depots, pipelines and tanks before being replaced by BS-VI.

"We are confident of disruption-free switchover to BS-VI supplies across the country," he said. "What we will be supplying is the best quality available anywhere in the world. You don't have any better fuel that is supplied in any part of the world. Perhaps our BS-VI fuel will be better than equivalent fuel in some parts of the US and Europe."

India adopted a fuel upgradation programme in the early 1990s. Low lead gasoline (petrol) was introduced in 1994 in Delhi, Mumbai, Kolkata and Chennai. On February 1, 2000, unleaded gasoline was mandated nationwide.

Similarly, BS-2000 (Euro-I equivalent, BS-1) vehicle emission norms were introduced for new vehicles from April 2000. BS-II (Euro-II equivalent) emission norms for new cars were introduced in Delhi from 2000 and extended to the other metro cities in 2001.

Benzene limits have been reduced progressively from 5 per cent in 2000 to 1 per cent nationwide. Lead content in gasoline was removed in phases and only unleaded gasoline is being produced and sold from February 1, 2000.

The octane number of gasoline signifies the improved performance of the engine. Loss in octane number due to phasing out of lead was made up by installing new facilities in the refinery and changes in refinery operation. RON (Research Octane Number) of gasoline for BS-2000 spec was increased to 88. This has over time been increased to 91.

Singh said sulphur reduction will reduce Particulate Matter (PM) emissions even in the in-use older generation diesel vehicles.

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News Network
January 9,2020

Raipur, Jan 9: An outbreak of bird flu has been reported from a state-run poultry farm in Chhattisgarh's Korea district, prompting the authorities to cull over 15,000 birds and step up vigil on poultry birds within 10 km radius of the affected area, officials said on Thursday.

So far, 15,426 chickens and quails have been culled and 30,000 eggs destroyed after the highly contagious H5N1 virus was detected among birds at the poultry farm and hatchery in Baikunthpur town, located around 300 km from here, they said.

There has been no case of infection in humans so far due to the outbreak of avian influenza, they said.

"After some chickens and quails were found dead on December 7 last year in the farm, their samples were collected and sent to local laboratories for testing," Dr R S Baghel, deputy director, veterinary department, Korea, told news agency.

When the disease was not properly detected, samples were further sent to Jabalpur in Madhya Pradesh where veterinarians suggested symptoms of chronic respiratory disease, following which their line of treatment was followed.

"Despite the treatment, the abnormal deaths of birds continued," Baghel said.

Later, the samples were sent to Bhopal-based National Institute of High-Security Animal Diseases where tests were found positive for the H5N1 virus on December 23, he said.

"Immediately after getting reports of bird flu, we took permission from the Korea district administration, as per the standard procedure, and culled all 15,426 birds (chickens and quails) and destroyed 30,000 eggs in the farm and its adjoining areas," the official said.

Of the total culled birds, nearly 641 chickens were being reared by locals within one km radius of the farm. The locals were given compensation for the culling of their birds, he said.

"We have completed the culling process and sealed the farm. After sanitising the area in 10 km of its radius, we submitted a report to the state's directorate of veterinary services on Wednesday," Baghel said.

"No human has been affected due to the outbreak and the situation is under control. We are waiting for further directives from the higher authorities," he said.

The official said for the next three months, they will be conducting surveillance in 10 km radius of the affected area during which blood samples of birds will be regularly sent to Bhopal for testing.

"We will continue our observation for next three months," he added.

Meanwhile, state veterinary services director C R Prasanna said, "No human has so far been affected due to avian influenza and workers at the poultry farm at Baikunthpur have been given medicines as a precautionary measure."

Nearly 40 villages fall within the purview of 10 km radius of the affected area from where random sampling of poultry birds will be done for next three months to check whether they are infected with avian influenza, he said.

"Necessary steps are being taken to prevent bird flu from spreading to other areas," he added.

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