Solar contacts: silver bullet?

Solar contacts silver and copper

The front contacts in today’s solar cells are made of screen-printed silver. Thus solar cells absorbed 11% of 2021’s silver market, and growing. Silver can be substituted with copper. But…

Solar: energy payback and embedded energy?

Energy payback of solar

…solar panel is about 65% glass, 15% aluminium, c10% polymers (mainly EVA encapsulants and PVF back-sheet), c3% copper. Photovoltaic silicon is only 5% of the panel by mass, but about…

Energy economics: an overview?

…Ammonia, Carbon Fiber, Cement, Copper, Cyanides, Desalination, Glass, H2O2, Hydrogen, Industrial Gases, Lithium Batteries, Methanol, NaOH/Cl2, Nitric Acid, Paper, Plastics, Silicon, Silver, Steel, Wood Products. As a rule of thumb,…

Energy storage: top conclusions into batteries?

Conclusions into batteries

…fluorinated polymers and battery-grade nickel; then graphite and copper. We are less worried about cobalt. Our best data-file into materials used in a lithium ion battery, and their costs, is…

Silver demand: upside and substitution?

Solar contacts silver and copper

…the silver contacts in solar cells with copper contacts, which have 99% lower metals costs, but 3-7x higher manufacturing costs, compared to the easy screen-printing methods used in today’s silver…

Energy intensity of fiber optic cables?

Energy intensity of fiber optic cables

…cable will enable 1-10 Gbps download speeds, which is 30-50x faster than a comparable copper cable (25-300 Mbps), and an order of magnitude above satellites or DSL (0.5 – 75…

Mine trucks: transport economics?

Mine Truck Economics

There are around 50,000 giant mining trucks in operation globally. The largest examples are around 16m long, 10m wide, 8m high, can carry around 350-450 tons and reach top speeds…

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