Recent utility filings from NV Energy suggest geothermal energy has achieved price parity with solar-plus-storage systems, a development industry observers have long anticipated. Three geothermal proposals submitted to the Nevada utility came in at $105 to $107 per megawatt-hour, undercutting the capacity-weighted average of approximately $114 per megawatt-hour for 11 solar-plus-battery projects in the same filing.
The cost advantage reflects multiple factors. Solar project pricing has increased considerably compared to previous years, with one project’s levelized cost rising from approximately $85 per megawatt-hour in 2024 to $125 per megawatt-hour due to permitting delays, land costs, financing expenses, and tariff impacts. Meanwhile, geothermal technology continues advancing along its cost curve through improved drilling techniques and engineering designs.
A critical distinction exists between the two technologies’ operational characteristics. Geothermal facilities generate power continuously regardless of weather conditions, whereas solar projects paired with battery storage typically include only four hours of storage capacity. Industry participants note that expanding battery duration to cover extended periods without sunlight would further increase costs. This reliability advantage has attracted interest from major technology companies, with Google backing up to 150 megawatts of geothermal capacity and Amazon committing to 100 megawatts through contracts in Nevada.
Technological momentum continues building within the geothermal sector. Recent well designs have achieved substantial improvements in drilling efficiency, and oil industry firms have begun investing in superhot geothermal projects. Federal policy support remains substantial, with the Department of Energy targeting price reductions to $45 per megawatt-hour by 2035 through its Enhanced Geothermal Shot program. However, market valuations of geothermal companies have declined significantly despite technical progress, with publicly traded firms experiencing substantial losses this period.
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