The Houston-based geothermal developer plans to sell 55.56 million shares at $21 to $24 each, according to a Monday filing with the US Securities and Exchange Commission.
At the top of the range, Fervo would be valued at about $6.5 billion based on the outstanding shares listed in the filing.
The offering comes as energy companies try to tap rising electricity demand from data centres and fund expansion of lower-carbon power generation.
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