This document summarizes a presentation given by Jay Nathwani on geothermal policies and their impacts in the United States. It discusses the current geothermal market and budget profile, outlines various federal and state policies that have supported geothermal development like tax credits and loan guarantees, and analyzes how these policies have helped double renewable energy generation from geothermal sources since 2008. It argues that continued support is needed through innovative research and policies to further reduce costs and realize the huge potential of enhanced geothermal systems.