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America's efficient light bulb boom

Why are American households using less electricity lately? A blog post from a University of California-Berkeley business prof shines a light (sorry!) on a big reason why — efficient light bulbs have a bigger share of the market.

The big change: Per-capita power use plateaued around 2010 after decades of growth, and is now lower than it was five years ago, notes Lucas Davis of the Energy Institute at Haas.

Data: Energy Information Administration; Note: Percentages do not add up to 100% due to rounding; Chart: Andrew Witherspoon / Axios