Wednesday, October 27, 2021

solar panel recycling is a problem

 https://www.greenbiz.com/article/what-will-happen-solar-panels-after-their-useful-lives-are-over

 

Part of the problem is that solar panels are complicated to recycle. They’re made of many materials, some hazardous, and assembled with adhesives and sealants that make breaking them apart challenging.

"The longevity of these panels, the way they’re put together and how they make them make it inherently difficult to, to use a term, de-manufacture," said Mark Robards, director of special projects for ECS Refining, one of the largest electronics recyclers in the U.S. The panels are torn apart mechanically and broken down with acids to separate out the crystalline silicon, the semiconducting material used by most photovoltaic manufacturers. Heat systems are used to burn up the adhesives that bind them to their armatures, and acidic hydro-metallurgical systems are used to separate precious metals.

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Oh boy.  Nothing is as easy as it seems.  For a long time I thought solar panels lasted basically forever.  Nope.

 

Sunday, October 24, 2021

Farmers can sell carbon credits if they do it right

 https://www.bbc.com/future/article/20211020-carbon-farming-a-better-use-for-half-earths-land

 

"Carbon farming, on the other hand, seeks to capture emissions, not create them. The challenge has been to make this form of regenerative farming financially viable, paying landowners to rejuvenate degraded soils by turning their fields into vast CO2 sponges.

Achieving this requires a range of regenerative techniques. Cover cropping is particularly popular – fields blanketed with grasses, cereals, legumes and other plant life that pull carbon from the air during photosynthesis, then store it in the soil below. After a couple of years and some meticulous measurements to show the changing carbon content of the soil, the sequestered carbon is certified and transferred into credits, before being sold.

For its proponents, carbon farming promises a bold new agricultural business model – one that tackles climate change, creates jobs and saves farms that might otherwise be unprofitable."

 

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I'm not sold on the idea of carbon credits, but this looks like a win-win for farmers.

 

Wednesday, October 13, 2021

Get the grid ready for its new job!

 https://www.washingtonpost.com/business/2021/10/13/electric-vehicles-grid-upgrade/

 

"Converting the nation’s fleet of automobiles and trucks to electric power is a critical piece of the battle against climate change. The Biden administration wants to see them account for half of all sales by 2030, and New York state has enacted a ban on the sale of internal combustion cars and trucks starting in 2035.

But making America’s cars go electric is no longer primarily a story about building the cars. Against this ambitious backdrop, America’s electric grid will be sorely challenged by the need to deliver clean power to those cars. Today, though, it barely functions in times of ordinary stress, and fails altogether too often for comfort, as widespread blackouts in California, Texas, Louisiana and elsewhere have shown."

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Didn't anybody notice this problem?  Are we screwing ourselves with eyes wide open?