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Completed TRL 9 (started at 4, targeting 9)
NASA's Solar Electric Propulsion (SEP) project is developing critical technologies to enable cost-effective new trips to Mars and to asteroids across the inner solar system, and also to support a variety of commercial spaceflight activities. Energized by the electric power from on-board solar arrays, the electrically propelled system will use 10 times less propellant than a comparable, conventional chemical propulsion system -- such as those used to power the space shuttles to orbit. Yet that reduced fuel mass will deliver robust power capable of propelling scientific missions well beyond low-Earth orbit, sending exploration spacecraft to distant destinations or ferrying cargo to and from points of interest, laying the groundwork for new missions or resupplying those already under way.
Listed on TechPort itself — the most direct way to ask about this specific project.
This is a mature technology (TRL 9) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.
None of these are guaranteed paths for this specific project — TechPort itself doesn't have an "apply" button. Reaching out to the contact(s) above with a specific question is usually the fastest way to find out what's actually open.