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Agreement with Great Plains Development Authority covers an initial phase of up to 150 MW , targeted for September 2028 and up to 2GW by 2031 Management to host business update call today , October 20th , at 11:00 a.m. ET PARSONS , Kan .-- ( BUSINESS WIRE ) -- Deep Fission , Inc. ( Nasdaq : FISN ) today announced a Master Energy Purchase Agreement with the Great Plains Development Authority ( GPDA ) , a quasi - municipal entity that owns the Great Plains Industrial Park in Parsons , Kansas . It converts the parties ' December 2025 letter of intent into a definitive contract for a commercial project at the site of Deep Fission's Department of Energy ( DOE ) pilot . The agreement binds Deep Fission to pursue the project and to supply power once licensed and operating , subject to the agreement's terms and conditions . Under the agreement GPDA will purchase electricity generated and made available by Deep Fission to satisfy the electricity requirements of industrial park tenants , up to the contracted capacity , with no minimum purchase obligation . The agreement also permits GPDA to assign its purchase obligations to qualifying tenants . The initial phase is anticipated to be 150 MW with a target date of commercial operation on September 30 , 2028 , and grow through later phases to a total of 2,000 MW pending further demand growth . " This agreement turns a shared vision into a binding commitment , " said Liz Muller , CEO and Co - Founder of Deep Fission . " Our approach is to bring firm power directly to where it's needed . Great Plains has been with us since we broke ground , and we're proud to take this next step together as we deliver reliable , clean , 24/7 power , with our Gravity reactor . " The Great Plains Industrial Park covers more than 14,000 acres in Labette County on the site of a former U.S. Army ammunition plant , with existing rail access , utilities and space for large industrial users . Deep Fission held a groundbreaking ceremony at the park in December 2025 on its pilot reactor under the U.S. Department of Energy ( DOE ) Reactor Pilot Program . " Dependable , affordable power is what draws employers to Southeast Kansas , and it's what the companies we're talking to are asking for , " said Brad Reams , Park Director , Great Plains Development Authority . " Deep Fission's Gravity reactor is designed to provide firm , carbon - free electricity right here at the park , and this agreement gives us a long - term energy plan to offer . " Deep Fission's Gravity ™ Nuclear Reactor is a pressurized water reactor that runs on standard low - enriched uranium fuel . Placing it approximately one mile underground is designed to allow the surrounding water column and rock to provide pressure control , cooling and shielding , potentially reducing the need for much of the surface infrastructure that conventional nuclear plants require . Deep Fission management will discuss the Agreement on its previously announced business update call today , Tuesday , October 20 , 2026 , at 11:00 a.m. ET . U.S. toll free : 1-877-425-9470 . International : 1-201-389-0878 . A live webcast will be available in the Investor Relations section of the Company's website at https://www.deepfission.com/investors . About Deep Fission Deep Fission is developing technology that places a small modular pressurized water reactor in a borehole approximately one mile underground . The Company's Gravity TM Nuclear Reactor approach combines established pressurized water reactor technology with a novel underground deployment model designed to simplify construction , enhance safety , and support scalable commercial deployment . Deep Fission is focused on delivering reliable , low- carbon baseload power to meet growing electricity demand from utilities , industrial customers , and data centers . The Company is currently advancing the development of its first reactor project in Parsons , Kansas , and was selected for the U.S. Department of Energy's Reactor Pilot Program . About the Great Plains Development Authority Great Plains Industrial Park provides large - scale , flexible environments located directly on the Union Pacific main line designed to support advanced industry , testing , and innovation . With significant room for expansion and a focus on