Showing posts with label clean energy. Show all posts
Showing posts with label clean energy. Show all posts

Wednesday, June 10, 2020

KING COAL DETHRONED

Coal has been a primary source of energy in the US since the 1880s and the source of most of the electricity generated in the United States since the early 1960s. Here in the US, it's been a relatively cheap, abundant and reliable source of energy. It's also the source of an enormous amount of greenhouse gases and toxic pollution.

It's now clear that coal is on its way out. According to the US Energy Information Administration, this year renewable energy sources such as wind, water and geothermal generated more electricity than coal for the first time in US history. Coal's share of the energy market has been declining for the past decade while renewables have been claiming a bigger and bigger share each year. This year the curves crossed for the first time.

Coal-fired power plant near Price, Utah
Credit: arbyreed

Despite President's Trump's repeated promises to bring back "beautiful, clean coal," and his rollback of key environmental protections, including the brain-damaging mercury emitted when coal is burned, King coal's throne has been on increasingly shaky ground due to simple economics--renewables are now both cheaper and far cleaner than coal. Trying to resuscitate this dying industry truly is tilting at windmills.

Windpower, growing rapidly in US

Nor do experts see much chance for coal to stage a counter-revolution.“Coal is on the way out, we are seeing the end of coal,” says Dennis Wamsted, analyst at the Institute for Energy Economics and Financial Analysis. "The trend is pretty clear."

With King coal on his way out, we can all breathe a bit easier. But,  as climate scientists have been telling us for decades now, replacing coal and other fossil fuels with renewables can't happen soon enough.

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REA

Friday, December 08, 2017

EUROPE COMMITS TO 100 PERCENT CLEAN ELECTRICITY BY 2050

This is just a quicklink to a remarkable piece of news.

Eurelectric, the body that represents 3,500 of Europe's electric companies, has now committed to carbon-neutral generation of all of Europe's electricity by 2050 or before. They point out that this is a win-win decision, since electricity from wind and solar is rapidly becoming cheaper than electricity generated by burning fossil fuels, and of course pumps far less climate-destabilizing methane and CO2 into the atmosphere.

Wind farm in Romania, 2011
Credit: Sandri Alexandra




Given America's seemingly unbreakable, politically driven addiction to fossil fuels, the reporter's final comment is remarkably restrained:

"It is refreshing to see a regional commitment to clean electricity in Europe. Industry leaders in the US would do well to study the European approach and adjust their thinking accordingly."

Duh!

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Friday, November 04, 2016

A 100% RENEWABLE WORLDWIDE ENERGY SYSTEM IS POSSIBLE--SEE IT IN ACTION HERE

If you've had a chance to drive or ride in a Prius, you know how you can watch the flow of energy to and from the battery, motor and brakes. it's a great feeling, for example, to see the battery being charged by the regenerative braking system--free energy!

Prius energy display/Credit: Kmf164 (at) en.wikimedia.org

Now imagine watching a similar visualization for the entire world, and a 100% sustainable one at that. Its designers call it the internet of energy. You can view it in action right here. It's great fun to play around with. 

Screenshot of renewable energy flows in European region/Credit: Neo Carbon Energy
You might think this is just a lovely fantasy, but it's not. The worldwide and region-by-region visualizations are the result of extensive and detailed research. Christian Breyer and colleagues at Lappeenranta University of Technology (LUT), in Finland, analyzed exactly what it would take to provide 100% renewable electricity worldwide using the most appropriate and efficient regional mix of solar, wind, hydro, biomass and other sources of renewable energy, along with the needed resources for transmission and storage. 

Contrary to those who argue that we must continue to depend on fossil fuels, the researchers found that renewables can provide ample energy anywhere on Earth, 24 hours a day, 7 days a week, conceivably by 2030.

The model was presented for the first time on November 4 at the World Clean Energy Conference in Geneva, Switzerland.

'The visualization shows exactly how a fully renewable electricity system operates. So let’s just build it,” urges chemical engineer Pasi Vainikka, a member of the research consortium. 

So far the group has only modeled a 100% renewable electrical system. Their next goal is to expand their work to include the entire energy system including heating, cooling and transportation. They also plan to map a feasible transition from our current unsustainable situation to a 100% sustainable future.

“Every country in the world has to find pathways to achieve the Paris agreement targets and to avoid stranded assets," says Breyer. "This model can provide the help for policy-makers, industrial decision-makers and societal stakeholders to do that."

It's do-able. Let's do it!