Business India ×
 Climate Change

Energy
Published on: June 26, 2020, 2 p.m.
Sunshine solution
  • A solar farm in Gujarat: the sun is the solution

By Sekhar Seshan. Consulting Editor, Business India

Over the past century, solar energy activist Jaideep N. Malaviya points out, global temperatures haven risen by 1.5°F (almost 1°C) human activities have released large amounts of carbon dioxide and other greenhouse gases (GHG) into the atmosphere. Most of the GHG come from burning fossil fuels to produce energy, while deforestation, industrial processes and some agricultural practices also emit gases into the atmosphere.

GHG - mainly CO2, methane, nitrous oxide, perfluorocarbons, hydrofluorocarbons, and sulphur hexafluoride - act like a blanket around Earth, trapping energy in the atmosphere and causing it to warm. “Build-up of GHG can change the earth's climate and result in dangerous effects to human health and welfare, and to ecosystems,” says Malaviya, a professional researcher, consultant and trainer in solar photovoltaics (PV) and solar thermal who is the secretary general of the Solar Thermal Federation of India (STFI).

While renewable energy sources like solar and wind are rapidly advancing to fulfil the energy demand and are likely to become substitutes for fossil fuel-based energy in future, the production of solar PV cells has a carbon footprint. The energy required to make a solar panel from mining basic raw materials is recovered in just two years; while the recycling of solar panels further aids the fight against climate change.

How much GHG is avoided from solar power? Each megawatt-hour (MWh) of electricity generated from conventional sources creates approximately 90 kg of CO2. A 1 MW solar system in India, on the other hand, will yield an average of 1,600 MWh annually, reducing around 150 tonnes of CO2 emissions every year. Taking into account the two years to pay off the embedded energy in the panel, such a 1 system will have a net saving of around 3,000 tonnes of CO2 in 25 years.

The manufacture of a complete solar energy system – comprising the solar cells, glass, aluminium frame, laminate, mounting and cabling, inverter, and takeback for recycling –  has a carbon footprint of 21 to 29 kg of CO2 per MWh. Against this, coal-based power has a carbon footprint between 500-600 kg per MWh, Malaviya explains. This is more than 20 times as much.

Of the government’s target of 450,000 MW of renewable energy by the year 2030, solar energy is set to contribute about 70 per cent - or 300,000 MW. But every MW of solar panel weighs approximately 50 tonnes. At the end of their life, these panels would create 15 million tonnes of waste by 2050. This, he points out, would cover 6,000 km of the road if stuffed in standard 40-foot containers.

Recycling them, on the other hand, would recover almost 80 per cent of raw material for use in making new panels. This will result in overall CO2 abatement of 360 billion tonnes of CO2) in their lifetime. The new 3R’s of solar panel are recycling will thus be Recycle, Reduce and ReGenerate.


Environment

The Center for Environment Concerns launches a pilot for greening road medians and urban areas

Low maintenance, sustainable green spaces

Published on Feb. 4, 2021, 10:48 a.m.

The Center for Environment Concerns launches a pilot for greening road medians and urban areas

Energy

The company provides grid compatible and reliable power to customers

Husk Power uses rice husk to generate electricity in rural India

Published on Dec. 23, 2020, 9:32 a.m.

The company provides grid compatible and reliable power to customers

Energy

The company's full-stack solution guarantees 15 per cent energy savings and zero upfront costs to the customer

Smart Joules and energy saving solutions

Published on Nov. 17, 2020, 10:17 a.m.

The company's full-stack solution guarantees 15 per cent energy savings and zero upfront costs to the customer

Green Buildings

Eight companies have already achieved CII’s Green Building Congress 2020 new standard

The GreenPro Ecolabel Standard for steel rebars will help a green built environment

Published on Nov. 5, 2020, 9:33 a.m.

Eight companies have already achieved CII’s Green Building Congress 2020 new standard

E-MAGAZINE

Healthcare

Goodyear India partners Americares India Foundation

Published on Feb. 2, 2021, 9:21 p.m.

The partnership will support COVID-19 healthcare facilities in Faridabad and Aurangabad

Environment

Tata Motors launches a 'Go Green' initiative

Published on Dec. 23, 2020, 10:34 a.m.

The company will plant a sapling for the sale of every new commercial vehicle

Women Empowerment

Tata Starbucks ties up with Educate Girls to empower women

Published on Dec. 2, 2020, 3:10 p.m.

The partnership aims to provide volunteering and educational support to those who have relocated to urban cities from villages

Environment

The public sector company is planting a tree for every retail customer visit during its TreeCheers campaign period