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United States Senator, State of Alaska
Chairman, Senate Energy and Natural Resources Committee
Preface from OurEnergyPolicy In the time since our November 2019 critical minerals discussion, COVID-19 has decimated global supply chains. Factory shutdowns in China, which accounts for 40–50% of the global wind power supply chain, have caused supply shortages of wind turbine components and massive financial losses, threatening current U.S. projects. China’s outsized market share is also affecting the solar market, although some analysts say a U.S. tariff on imported solar panels may have blunted the impact. “If coronavirus has shown us anything, it’s that we are far too reliant on China and other countries for key minerals like… [more]
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Editor / Researcher
OurFiniteWorld.com
Many people are hoping for wind and solar PV to transform grid electricity in a favorable way. Is this really possible? Is it really feasible for intermittent renewables to generate a large share of grid electricity? The answer increasingly looks as if it is, “No, the costs are too great, and the return on investment would be way too low.” We are already encountering major grid problems, even with low penetrations of intermittent renewable electricity, which in the U.S. was 5.4% of 2015 electricity consumption. In fact, I have come to the rather astounding conclusion that even if wind turbines… [more]
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Senior Scientist
UFA Ventures, Inc.
There have been many voices lately saying that renewables could produce 80% or more of the world’s energy by 2050 in order to limit global warming to 2.5°C, as long as we develop sufficient energy storage and bring up efficiency and conservation. But the real issue is raw materials. It takes about 500 tons of steel and 1000 tons of concrete per MW of wind power. Even more to connect them to the grid. The United States has used 40 million tons of steel to build 48,800 wind turbines totaling 74,512 MW and costing about 150 billion dollars. Wind energy… [more]
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