Here’s a quiz; no conferring. To the nearest whole number, what percentage of the world’s energy consumption was supplied by wind power in 2014, the last year for which there are reliable figures? Was it 20 per cent, 10 per cent or 5 per cent? None of the above: it was 0 per cent. That is to say, to the nearest whole number, there is still no wind power on Earth.https://www.spectator.co.uk/2017/05/wind-turbines-are-neither-clean-nor-green-and-they-provide-zero-global-energy/
Tuesday, November 26, 2019
Wind turbines are neither clean nor green, and they provide zero global energy
Thursday, November 14, 2019
Electric cars will help destroy the oceans
The future of electric cars may depend on mining critically important metals on the ocean floor.https://www.bbc.com/news/science-environment-49759626
That's the view of the engineer leading a major European investigation into new sources of key elements.
Demand is soaring for the metal cobalt - an essential ingredient in batteries and abundant in rocks on the seabed.
Laurens de Jonge, who's running the EU project, says the transition to electric cars means "we need those resources".
Wednesday, November 13, 2019
High cost of recycling wind turbines
While the turbines' steel and concrete can be disposed of without greater problems, the UBA found that the rotor blades will pose particular problems as the materials they are made of are difficult to separate properly. By 2024, about 70,000 tonnes of old blades could pile up annually in Germany alone. Moreover, the reserves set aside by operators could fall short of covering the financial needs by hundreds of millions of euros by 2038, which is why the UBA recommends reviewing the reserves' calculation base and have them reviewed by independent experts on a regular basis.https://www.cleanenergywire.org/news/mass-dismantling-old-wind-turbines-could-overburden-germanys-recycling-capacities?
Sunday, October 27, 2019
EROEI -- looking at the true energy cost of using #renewables
If there is any plan to cease using fossil fuels, all of these backup electricity providers, including nuclear, will disappear. (Nuclear also depends on fossil fuels.) Renewables will need to stand on their own. This is when the intermittency problem will become overwhelming. Fossil fuels can be stored relatively inexpensively; electricity storage costs are huge. They include both the cost of the storage system and the loss of energy that takes place when storage is used.https://ourfiniteworld.com/2019/10/24/how-renewable-energy-models-can-produce-misleading-indications/
Exploited lithium miners fighting back
Indigenous communities of the Council of Atacama Peoples block world's no.2 producer of lithium SQM in #Chile. Ending extractivism in IPs' territories means fighting for free public transport & active travel for all rather than electric cars for the few. https://t.co/LBZQJzz2xJ
— Tom Younger (@tomayounger) October 27, 2019
Monday, August 19, 2019
Renewable energy depends heavily on rare elements
To meet the demands of the Green New Deal, which proposes to convert the US economy to zero emissions, renewable power by 2030, there will be a lot more of these mines gouged into the crust of the earth. That’s because nearly every renewable energy source depends upon non-renewable and frequently hard-to-access minerals: solar panels use indium, turbines use neodymium, batteries use lithium, and all require kilotons of steel, tin, silver, and copper. The renewable-energy supply chain is a complicated hopscotch around the periodic table and around the world. To make a high-capacity solar panel, one might need copper (atomic number 29) from Chile, indium (49) from Australia, gallium (31) from China, and selenium (34) from Germany. Many of the most efficient, direct-drive wind turbines require a couple pounds of the rare-earth metal neodymium, and there’s 140 pounds of lithium in each Tesla.https://communemag.com/between-the-devil-and-the-green-new-deal/
Monday, August 5, 2019
Norwegian study shows "sustainable forest management" is not working
While SFM has been increasingly integrated into legal frameworks, it seems to remain poorly applied in practice, and most commercial logging remain stuck into the paradigm of “sustainable income”, instead of progressing towards “sustainable provision of goods and services”. Poor forest-related law enforcement in producer countries and low prices of wood or carbon credits are creating uncertainties among stakeholders, who generally prefer fast return on investment.https://redd-monitor.org/2018/01/30/norwegian-funded-study-exposes-the-myth-of-sustainable-forest-management/
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