Quantcast
Renewable Energy
Windorah's Solar Farm dishes taken from the roadside (Diamantina Developmental Road) on a hot summer day. Aaronazz / Wikimedia Commons

100% Renewable Electricity to Power the World by 2050? It's Happening, Study Says

By Alex Kirby

If you think a world powered by 100 percent renewable electricity—and significantly cheaper than today's—is an impossible dream, there's a surprise in store for you. A new study says it's already in the making.

A global transition to 100 percent renewable electricity, far from being a long-term vision, is happening now, the study says. It is the work of Finland's Lappeenranta University of Technology (LUT) and the Energy Watch Group (EWG), and was published at the UN climate change conference, COP23, which is meeting here.


The authors say a global electricity system based entirely on renewable energy will soon be feasible day in, day out, at every moment throughout the year, and would be more cost-effective than the existing system, based largely on fossil fuels and nuclear energy.

Current renewable energy potential and technologies, crucially including storage to guarantee a constant power supply, can generate sufficient secure power to meet the entire world's electricity demand by 2050, they argue. With political backing it could happen even sooner.

The total levelized cost of electricity—roughly, the average cost—for 100 percent renewable electricity in 2050 would be €52/MWh (approximately $68/MWh), compared with €70/MWh (approximately $92/MWh) in 2015.

There is no silver bullet in their approach. Their model—the first of its kind, they say—simply simulates the most efficient energy supply with an optimal mix of technologies and locally available renewable resources.

A transition to 100 percent renewables would bring greenhouse gas emissions in the electricity sector down to zero and drastically reduce total losses in power generation. It would create 36 million jobs by 2050, the study says, 17 million more than the sector has today.

Cost saving

"There is no reason to invest one more dollar in fossil fuel or nuclear power production," said EWG president Hans-Josef Fell. "Renewable energy provides cost-effective power supply.

"All plans for further expansion of coal, nuclear, gas and oil must be stopped. More investment needs to be channelled into renewable energies and the necessary infrastructure . Everything else will lead to unnecessary costs and increasing global warming."

"A full decarbonization of the electricity system by 2050 is possible for lower system cost than today, based on available technology. Energy transition is no longer a question of technical feasibility or economic viability, but of political will," said Christian Breyer, lead author of the study and professor of solar economy at LUT.

His last point has been made many times already. Nearly five years ago researchers said Australia could by 2023 rely entirely on renewable energy—if it could summon up enough political will.

In 2014 another study said it was only a lack of political determination that was preventing the world switching away from fossil fuels altogether. And earlier this year, in one of his last presidential statements, Barack Obama said he believed the U.S. was engaged in an "irreversible shift" to clean energy.

Losses cut

The world population is expected to grow from 7.3 to 9.7 billion people this century. Global electricity demand is likely to double by mid-century, from 24,310 TWh in 2015 to around 48,800 TWh by 2050. Because of their rapidly falling costs, solar photovoltaic (PV) power and battery storage increasingly drive most of the electricity system.

Global greenhouse gas emissions would be significantly reduced, the study says, from about 11 GtCO2eq in 2015 to zero emissions by 2050 or earlier, as the total LCOE of the power system declines.

The losses in a 100 percent renewable electricity system are around 26 percent of total electricity demand, compared with the current system in which about 58 percent of the primary energy input is lost.

The study is a challenge for policymakers and politicians, the authors say, as it refutes an argument frequently used by critics of renewable fuels—that they cannot provide a full energy supply on an uninterruptible basis.

Reposted with permission from our media associate Climate News Network.

Show Comments ()
Sponsored
Christy Williams / WWF

Celebrating the Biggest Conservation Wins of 2017

It's been a big year for conservation.

Together we assured the world that the U.S. is still an ally in the fight against climate change through the We Are Still In movement, a coalition of more than 2,500 American leaders outside of the federal government who are still committed to meeting climate goals. WWF's activists met with legislators to voice their support for international conservation funding. And we ensured that Bhutan's vast and wildlife-rich areas remain protected forever through long-term funding.

Keep reading... Show less
Pexels

Cell Phone Radiation Risks: California Issues Groundbreaking Guidelines

By Olga Naidenko

This week, California officially issued groundbreaking guidelines advising cell phone users to keep phones away from their bodies and limit use when reception is weak. State officials caution that studies link radiation from long-term cell phone use to an increased risk of brain cancer, lower sperm counts and other health problems, and note that children's developing brains could be at greater risk.

Keep reading... Show less

3 Extreme Weather Events in 2016 'Could Not Have Happened' Without Climate Change, Scientists Say

Three of 2016's extreme weather events would have been impossible without human-caused climate change, according to new research.

The Bulletin of the American Meteorological Society published a collection of papers Wednesday focused on examining the effect of climate change on 27 extreme weather events last year. The research found that climate change was a "significant driver" in 21 of these weather disasters, and that three events—the temperatures making 2016 the hottest year on record, the heat wave over Asia in the spring, and a "blob" of extremely warm water in the Pacific—"could not have happened" without climate change.

Keep reading... Show less
Alan Schmierer

These Butterflies Have Lawyers

By John R. Platt

Don't mess with Texas butterflies. They have lawyers.

Keep reading... Show less
Sponsored
Renewable Energy
The price of offshore wind energy has dropped significantly in recent years. Wikimedia Commons

Netherlands Launches Landmark Zero-Subsidy Wind Power Auction

The Netherlands has launched the world's first “zero subsidy" tender on Friday to build 700 megawatts of offshore wind. Shortly after the announcement, the country already found its first bidder.

Zero subsidy tenders have been labeled as a “game-changer" for the sector because it means that potential bidders would rely solely on wholesale electricity prices without financial aid from the government.

Keep reading... Show less
Renewable Energy
India is betting on a "green future" through clean energy and low carbon innovation. UK Department for International Development / Flickr

World's Largest Solar-Wind-Storage Plant Planned for India

A wind, solar and battery storage plant is being planned for the southeastern Indian state of Andhra Pradesh, which has faced power woes in recent months due to grid failure.

The renewable energy facility will consist of 120 megawatts of solar, 40 megawatts of wind, 20-40 megawatt-hours of battery backup and will be spread over 1,000 acres in the district of Anantapur.

Keep reading... Show less
Sponsored

How Cities Can Meat the Climate Challenge

By Kari Hamerschlag and Christopher D. Cook

Addressing a crowd of mayors gathered in his hometown last week, former President Obama called on the "new faces of American leadership" on climate change to take swift action to spare our children and grandchildren from a climate catastrophe. Twenty-five U.S. mayors signed the "Chicago Charter," affirming a commitment from their cities to meet the Paris agreement target for greenhouse gas reductions by 2025.

Keep reading... Show less
Gates of the Arctic National Park, Alaska. Plants on the Arctic tundra absorb mercury from the air, then transfer it to soil when they die. Paxson Woelber / Flickr

Mercury From Industrialized Nations Is Polluting the Arctic—Here’s How It Gets There

By Daniel Obrist

Scientists have long understood that the Arctic is affected by mercury pollution, but know less about how it happens. Remote, cold and seemingly pristine, why is such an idyllic landscape so contaminated with this highly toxic metal?

I recently returned from a two-year research project in Alaska, where I led field research into this issue alongside fellow scientists from the University of Colorado; the University of Nevada's Desert Research Institute; the University of Toulouse and the Sorbonne University in France; and the Gas Technology Institute in Illinois.

Keep reading... Show less
Sponsored

mail-copy

The best of EcoWatch, right in your inbox. Sign up for our email newsletter!