We see it in other goods like lightbulbs. Economies of scale is understood. The learning curve for solar/batteries has been stable for almost 50 years. A small

We see it in other goods like lightbulbs. Economies of scale is understood. The learning curve for solar/batteries has been stable for almost 50 years. A small part of the price declines is due to subsidies from the Chinese government but I don't believe it's the best explanation for the 97% price drop. But if you can answer the question "how much would batteries go up in price next year if China removed subsidies", I'd genuinely like to know the answer to that because it is important. One risk is a war between the US and China, regardless of the subsidy question. So we should get good at domestic alternatives like compressed air and pumped hydro, and work towards our own manufacturing of batteries.