Tag Archives: cement

Science magazine on Peak Sand 2017 and 2018

[ Sand is essential to make concrete, glass, silicon for computer chips, and many other products (longer list in Peak Sand), so no wonder top journal “Science” has had two articles on this topic. Sand mining also ruins ecosystems, lessens … Continue reading

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Industrial Waste Heat – more BTUs than all renewable energy resources combined

Industrial waste heat Coal, natural gas, and oil are essential for the high temperatures required in the thermal processing of metals, cement, fertilizer, glass, processed foods, and so on. About 420 trillion Btus of this is wasted, and some of … Continue reading

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Wind turbines hit limits to growth before 50% wind power penetration

Material requirements of 50% wind power in the USA hit limits to growth Also see: Davidsson, S., et al. 2014. Growth curves and sustained commissioning modelling of renewable energy Investigating resource constraints for wind energy. Energy Policy. Fizaine, F., et … Continue reading

Posted in Alternative Energy Resources, Electrification, Limits To Growth, Renewable Integration, Wind | Tagged , , , , , , , , , , , | 2 Comments