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In-brief analysis

October 10, 2025

An increasing share of U.S. households are using electricity for heating, although natural gas remains the most common heating fuel. In 2024, 42% of U.S. households reported that electricity was their main space heating fuel, according to annual estimates from the U.S. Census Bureau’s American Community Survey. Natural gas was the main heating fuel in 47% of homes last year, a decline from 49% in 2010.

Evolving trends in home heating fuels reflect shifts in housing populations, changes in technology and policy, and decisions by households and home builders. The center of American population continues to generally move west and south, from areas with colder weather to areas with warmer weather. As that population has shifted, overall demand for space heating has declined.

Data from our Residential Energy Consumption Survey (RECS)

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Researchers at Columbia have created a chip that turns a single laser into a “frequency comb,” producing dozens of powerful light channels at once. Using a special locking mechanism to clean messy laser light, the team achieved lab-grade precision on a small silicon device. This could drastically improve data center efficiency and fuel innovations in sensing, quantum tech, and LiDAR.

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Solar energy is now the cheapest source of power worldwide, driving a massive shift toward renewables. Falling battery prices and innovations in solar materials are making clean energy more reliable than ever. Yet, grid congestion and integration remain key challenges. Experts say smart grids and sustained policy support are crucial to accelerate the transition.

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