My father worked for IBM in the 1960s, and one time someone showed him a megabyte of memory. The machine filled a whole room. It reportedly cost $1MM, and it was a big deal. Checking on Amazon, you can buy a 64GB thumb drive for $13. Unpacking this, we can adjust $1MM in, say, 1965 to $8MM in 2018 dollars using the consumer price index. So, in 2018 dollars, this early megabyte of memory apparently cost $8Bil./GB. Today, it costs $0.20/GB, which is nearly an 11 order-of-magnitude difference! Could they have predicted in the 1960s that memory would become ubiquitous and near free?
What about solar power? According to LBNL’s 2018 Utility Scale Solar report, solar energy now makes up about 2% of the electricity used in the U.S.1 It is beginning to achieve market penetration but is still frequently grouped into the “Other” category in power generation pie charts. Will costs of solar power fall substantially, and will solar power become ubiquitous? There may be reasons besides cost that holds back the solar industry, but lowering cost always helps to expand a market. Continue reading “Applying Experience Curves to Utility-Scale Solar Electricity”