Katherine Tweed is a freelance journalist focusing on clean energy issues including renewable energy, distributed energy resources, energy efficiency, smart home and regulatory innovation. Her freelance work has appeared in a range of outlets, including Grentech Media, IEEE Spectrum, Scientific American, WebMD, Audubon Magazine and Scholastic’s MATH magazine. She has a master’s degree in Science, Health and Environmental Reporting from New York University. She is based in New York. You can follow her on Twitter @katherinetweed.