28/06/2022
A zero-carbon-emissions energy system will rely mostly on low-cost solar electricity, experts say. About 100 giant solar panel factories must be built by 2025 for the world to defossilize its energy supply by 2035.” We know the world needs to de-fossilize its energy systems,” says Christian Breyer, professor of solar economics at LUT University in Lappeenranta, Finland, whose research group models transition pathways to future zero-emissions energy systems. “We need to get to net-zero greenhouse gas emissions — as quickly, safely, and cost-effectively as possible. To do that, we need technologically feasible, cost-optimized transition pathways for every region of the world. Our calculations show how we can do that.” Breyer’s cost-optimized model of 2019 shows how a global energy system with net zero carbon emissions can be achieved. In the model, solar photovoltaics (PV) — solar panels — supply 69% of total global primary energy demand for all purposes. The rest comes from wind power, biomass and waste, hydropower, and geothermal power. His zero-emissions scenario doesn’t include nuclear power because it’s “simply too expensive,” Breyer told DW. “PV technology is becoming cheaper year by year; the construction costs of nuclear power plants, on the other hand, are rising.” Moreover, it’s much easier, faster, and less risky to install and operate solar power than nuclear power plants. By when must the world stop burning fossil fuels? The LUT researchers’ solar power-based model raises two questions. First, by when must the globe reach net-zero emissions of greenhouse gases if we’re going to meet the internationally agreed goal of keeping global warming below 1.5 degrees Celsius? Second, how many solar power plants would need to be built — and by when — to meet solar energy’s share of this climate goal? DW asked Piers Forster, a climate scientist at the University of Leeds in the U.K., how much more CO2 can be cumulatively pumped into the air if the 1.5C degree target limit is to be met – without later having to make massive efforts to remove CO2 out of the air through expensive “geoengineering” or “carbon drawdown” measures. His sobering answer: As of late 2020, to have a 2/3 probability of staying below 1.5C, we can release — at most — 200 billion additional tons of CO2 (GtCO2) into the air, beyond the 1,700 GtCO2 already released since the beginning of the industrial revolution. In 2019 alone, emissions totalled about 40 GtCO2. If emissions stay roughly level for the next few years – which is very likely – the remaining CO2 emissions budget will be used up by the end of 2025. After that, the world will be in “carbon overshoot,” and on track toward very dangerous climate changes. The implications? “We must get to zero emissions as soon as possible after 2025,” says Breyer. “The current political target year for zero emissions is 2050. That’s way too late.” The true cost of coal power There’s already too much carbon in the atmosphere, and therefore much of the carbon being released into the atmosphere now will have to be taken back out in future to avoid dangerous climate changes and long-term sea level rise. That’s going to be very expensive. It would be much cheaper to expand renewable energy systems more quickly and shut down coal-fired power plants sooner, Breyer says. Here’s why: Producing one MWh of coal-fired electricity causes about one metric ton of CO2 emissions, Breyer explains. Actively taking CO2 out of the air and permanently storing it may cost about €100 ($122) per ton in the long run. By comparison, one MWh of electricity cost an average of €33 on the electricity exchange in Germany in 2020. This means coal-fired power is actually about four times more expensive than electricity from PV or wind power plants – or it would be, if the financial costs of actively recapturing and storing each ton of carbon released from fossil fuels burning were included in the price of each MWh of coal-fired power, as economists have
For Solar Solution call on 7737274826...!!!
Khole Ke Hanuman Ji Mandir , Jaipur Khatu Shyam ji ( Shyam Baba ) Garh, Rajasthan, India Ramcharan Bohra Dr Naresh Kumar Dr. Naresh Desai Jantar Mantar (Delhi) PIZZA WORLD PIZZA WORLD Pizza World Jaipur Domino's Pizza Jaigarh Fort Nahargarh Fort--Most Happening Place Of Jaipur Jodhpur City, Rajasthan, India Udaipur, Rajasthan Udaipur - The City of Lakes Jaipur, Rajasthan गुलाबी नगर, जयपुर : Pink City, Jaipur Mansarover, Jaipur City Jaipur Pink Panthers Jaisalmer Marriott Resort & Spa Sam Sand Dunes, Jaisalmer Maharashtra Business Club Maharashtra Business Group New Gujrat Crockery store Ahamdabad Airport Ahamdabad Ujjawal Trivedi Ujjain Commissioner Bikaner Patrika Bikaner-The Smart City 101 Great Goals.com Jaipur PinkCity Pinkcity India Pinkcity Royals PinkCity Fashion Gulabi Nagari Fortis Healthcare Jammu and Kashmir Sachnews Jammu Kashmir Rajasthan BJP Rajpur
