This concentration reflects both the technology’s geographic constraints and its role as a steady baseload resource rather than a flexible, rapidly deployable option. In the electric sector, geothermal supplies closer to 0.
Geothermal Power's US Market Share and Growth Potential
7% to 1% of total utility-scale generation, depending on year-to-year variations in hydrology and plant operations. However, geothermal still competes with cheaper short-term renewables and abundant natural gas, so long-term commitments and streamlined permitting remain critical to expanding its role in a decarbonized grid.
When focusing specifically on what percent of geothermal energy is used in the US for electricity, the figure is higher because nearly all US geothermal output is converted into power. Growth Potential and Emerging Technologies Enhanced Geothermal Systems, or EGS, aim to unlock heat in deeper, less permeable rock by creating engineered reservoirs, potentially expanding the fraction of what percent of geothermal energy is used in the US far beyond today’s limited resource base.
Geothermal Power's US Market Share and Growth Potential
When assessing what percent of geothermal energy is used in the US by state, these five regions account for the overwhelming majority of production, with the rest scattered across Idaho and other geologically favorable areas. While this percentage may appear small compared with fossil fuels or renewables like wind and solar, geothermal power provides steady, low-carbon electricity and direct heat in regions where geology favors it.
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