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Solar power to ward off energy tariff fluctuations in West Bengal



By NewsGram Staff Writer

Solar energy is the most equipped and organized available source of energy. It does not belong to any single individual but for every living creature. It is also one of the most important non-conventional sources of energy because of its non-polluting element, which also helps in reducing the greenhouse effect. Hence, it is the best form of energy, which can be used when the power tariff is touching the roof.

A government housing complex towering over Dhakuria Lake, Kolkata, is showing the way to have immunity against power tariff fluctuations, as a resident named Avijit Ghosh has decided to fix the problem of high and inconsistent power bills himself.

Ghosh is an energy technologist with Central Glass and Ceramic Research Institute (CGCRI), who conceived the plan and installed the solar power plant fighting against many odds on the rooftop of a housing apartment meant for the scientists of Council of Scientific and Industrial Research (CSIR).

After a year of observation, he was so jubilant with his successful experiment that now he wants to emulate and install it on every rooftop of the city.

Professor Indranil Manna, director IIT-Kanpur, who as the director of CGCRI encouraged Ghosh out of his way, said, “The tariff of power generated from the fossil fuel like coal and petroleum products is bound to go up with the steady depletion of the reserve, which might last another five decades. So, rooftop solar power plant is no more a fancy of a few eccentrics.”  The current director of CGCRI, Kamal Dasgupta, is equally glad by the outcome of the plant.

The authorities are constantly aiming to create the amount of power required by the city. The total estimated power produced by the plant in Kolkata was considered to be around 45,000 KWh in a year, but actual total generation was 52,269 KWh in past one year.  Almost 50,000 units from the total solar power generation were utilized in-campus and additional 2,165 units were sold to the Calcutta Electric Supply Corporation (CESC) at the prevailing rate of the month. The sale and purchase of the power is accorded within the parameters of power purchase agreement, entered into between CSIR-CGCRI & CESC for 25 years.

Development is essential, but the thing that really matters the most is the positive environmental impact that is related to the performance of the plant. Kolkata plant’s contribution to greenhouse gas emission reduction — CO2 emission avoided at Thermal Power Plant’s Generation — is around 86 M.T., which is really impressive.

The water saved at Thermal Power Plant is around 575 Kilolitres. “This is a huge environmental benefit that a solar power plant can engineer,” said Susapta Ghosh, superintendent engineer and Sujoy Roy, an electrical engineer, who also toiled a lot for plant’s fantastic performance.

The main concern over solar power is the initial investment of installing the panels. Yet the cost savings on electrical bills and the positive effect on the environment make it an increasingly attractive alternative for homes and businesses alike.

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Milky Way’s neighbouring galaxy is of same size, not bigger

With Andromeda no longer considered the Milky Way's big brother

UFO religion as a concept is now becoming a part of popular understanding.
Countless galaxies exist in the universe, each hiding secrets that humankind is yet to unearth. Pixabay
  • Astronomers discover that the other galaxy nearest to us is the same size as ours
  • The name of the other galaxy is Andromeda
  • It is heavier than sun but the same size as Milky Way

In what could put a galactic arms race to rest, astronomers have discovered that our nearest big neighbour, the Andromeda galaxy, is roughly the same size as the Milky Way.

It had been thought that Andromeda was two to three times the size of the Milky Way, and that our own galaxy would ultimately be engulfed by our bigger neighbour.

Galaxy nearest to Milky Way is not larger than it. VOA
Galaxy nearest to Milky Way is not larger than it. VOA

But the new study, published in the journal Monthly Notices of the Royal Astronomical Society, evens the score between the two galaxies.

It found the weight of the Andromeda is 800 billion times heavier than the Sun, on par with the Milky Way.

The research suggests scientists previously overestimated the amount of dark matter in the Andromeda galaxy.

Also Read: Planets Beyond Milky Way Galaxy Discovered For First Time

“We had thought there was one biggest galaxy and our own Milky Way was slightly smaller but that scenario has now completely changed,” said Prajwal Kafle from the University of Western Australia.

“By examining the orbits of high speed stars, we discovered that this galaxy has far less dark matter than previously thought, and only a third of that uncovered in previous observations,” he said.

Andromeda  is heavier than sun. VOA
Andromeda is heavier than sun. VOA

The study used a new technique to measure the speed required to escape a galaxy.

“When a rocket is launched into space, it is thrown out with a speed of 11 km per second to overcome the Earth’s gravitational pull,” he said.

“Our home galaxy, the Milky Way, is over a trillion times heavier than our tiny planet Earth so to escape its gravitational pull we have to launch with a speed of 550km/s,” Kafle said.

Andromeda is same size as the Milky way galaxy. Wikimedia Commons
Andromeda is same size as the Milky way galaxy. Wikimedia Commons

“We used this technique to tie down the mass of Andromeda,” he added.

The Milky Way and Andromeda are two giant spiral galaxies in our local Universe, and light takes a cosmologically tiny two million years to get between them.

With Andromeda no longer considered the Milky Way’s big brother, new simulations are needed to find out what will happen when the two galaxies eventually collide, suggests the study.