Friday, September 23, 2016

Ten Reasons Intermittent Renewables (Wind and Solar PV) are a Problem

Our Finite World: "what happens to world CO2 emissions when we ramp up intermittent renewables? As far as I can tell, it tends to raise CO2 emissions. One way this happens is by ramping up China’s economy, through the additional business it generates in the making of wind turbines, solar panels, and the mining of rare earth minerals used in these devices. The benefit China gets from its renewable sales is leveraged several times, as it allows the country to build new homes, roads, and schools, and businesses to service the new manufacturing. In China, the vast majority of manufacturing is with coal."

Friday, September 2, 2016

The dark side of renewable energy

Eco-Business: "Rare earth metals, hard-to-find materials, with unfamiliar names such as lanthanum, neodymium and europium, are used in wind and solar energy projects, but dwindling supplies could hinder a roll-out of low carbon technologies and slow China’s shift away from coal power.

These compounds, which are highly toxic when mined and processed, also take a heavy environmental toll on soil and water, posing a conundrum for policymakers in China, the world’s biggest producer and consumer of rare earths.   "