Another reason the market won't fix energy consumption on its own: externalized costs (onto the consumer's power bill). What is one of the most market-effectiv

Another reason the market won't fix energy consumption on its own: externalized costs (onto the consumer's power bill). What is one of the most market-effective US regulations? Requiring a standardized EnergyGuide appliance label for average yearly energy costs. (Aka the yellow label https://www.energystar.gov/products/ask-the-experts/whats-difference-between-energy-guide-and-energy-star https://www.energystar.gov/products/ask-the-experts/whats-di... ) What did companies do before that? Installed the cheapest, least-efficient parts, put marketing copy on their boxes about how they were high efficiency, and then passed the costs onto unknowing consumers.