NASA’s Gateway Lunar Station Powers Up, Paving Way for Artemis Moon Missions

NASA has powered up the Gateway lunar station’s Power and Propulsion Element (PPE) for the first time, proving that the spacecraft’s core power system works and bringing the Artemis-era Moon-orbiting outpost a major step closer to reality.[1][5]

This milestone, announced by NASA’s Glenn Research Center, marks the first full activation of the 60‑kilowatt-class solar electric power system that will supply electricity, propulsion, and communications for Gateway in orbit around the Moon.[1][5] Designed as the “powerhouse” of the future lunar station, the PPE will enable Gateway to maintain and adjust its orbit, support science instruments, and eventually host visiting crews as part of the Artemis campaign.[1][3][5]

What Is the Power and Propulsion Element?

The Power and Propulsion Element is a solar electric propulsion spacecraft that combines high-efficiency electric thrusters with large roll‑out solar arrays.[1][3] It will:

• Generate up to 60 kW of electrical power for Gateway systems and payloads.[1]
• Provide high‑rate communications, relaying data between the Moon, Gateway, and Earth.[1]
• Control attitude and orbit, including station‑keeping and transfers between lunar orbits.[1][3]

NASA Glenn manages PPE development, while Lanteris Space Systems in Palo Alto, California, is building the spacecraft using a scaled version of its commercial Lanteris 1300 platform.[1][2] This approach leverages commercial satellite heritage while meeting deep-space human‑rated standards.[2]

First Power-Up: Why It Matters

According to NASA, the PPE’s main electrical system was successfully powered on earlier last year, confirming that the hardware and integrated power architecture are functioning as designed.[1] This early power-on test demonstrates that the element can:

• Safely route and manage tens of kilowatts of power.
• Support the loads required for electric propulsion, communications, and attitude control.
• Interface properly with avionics and control software in a realistic flight configuration.[1]

By completing this test on the ground, teams reduce risk before launch, catching potential issues while the spacecraft is still accessible. It also validates the design choices that make PPE central to NASA’s vision of a long‑duration, sustainable presence in cislunar space.[1][3]

Advanced Electric Propulsion: The Heart of Gateway Mobility

A key feature of the PPE is its solar electric propulsion system, which will use powerful Hall‑effect thrusters instead of traditional chemical rockets.[1][3][4]

• Three 12‑kW Advanced Electric Propulsion System (AEPS) thrusters, developed by Aerojet Rocketdyne (an L3Harris company) with NASA, form the high‑power core of PPE propulsion.[1][3][4]
• Four 6‑kW Busek BHT‑6000 thrusters provide additional maneuvering capability.[1]

L3Harris announced in December 2025 that the three AEPS flight thrusters have completed testing and delivery for integration onto the PPE.[4] These will be the most powerful electric propulsion thrusters ever flown in space, enabling Gateway to reach and maintain its unique near-rectilinear halo orbit around the Moon and support Artemis IV and later missions.[3][4]

Electric propulsion offers far higher fuel efficiency than chemical propulsion, trading raw thrust for the ability to operate continuously over long periods.[2][3][4] For a logistics hub like Gateway—expected to operate for many years—this efficiency is critical.

Power from the Sun: Roll-Out Solar Arrays

To feed these systems, PPE will rely on large roll-out solar arrays manufactured by Redwire.[1]

• The arrays are complete and undergoing testing at Redwire’s facility in Goleta, California.[1]
• When deployed in space, they will provide the roughly 60 kW needed to run Gateway infrastructure and propulsion.[1][3]

These arrays are based on a flexible, lightweight design that can be stowed compactly at launch and then unrolled once in space, an evolution of technology already flown on other NASA missions.

How Industry Partners Are Shaping Gateway

The PPE showcases a deeply integrated NASA–industry partnership:

• Lanteris Space Systems supplies the spacecraft bus and integrates power and propulsion hardware, drawing on a commercial platform with more than 100 spacecraft flights behind it.[1][2]
• L3Harris / Aerojet Rocketdyne developed and delivered the 12‑kW AEPS thrusters, including extensive hot‑fire and environmental tests at NASA Glenn.[3][4]
• Busek provides additional Hall thrusters, and Redwire delivers the roll-out solar arrays.[1][3]

NASA’s Glenn Research Center oversees the PPE and manages the broader Solar Electric Propulsion project, ensuring that lessons learned on Gateway will feed into future deep-space missions.[1][3]

Gateway’s Role in the Artemis Campaign

Gateway is a small, crew-tended space station in lunar orbit that will serve as a staging point for astronauts traveling to the Moon’s surface and, eventually, to Mars.[3][5]

The first two Gateway elements—the Power and Propulsion Element and the Habitation and Logistics Outpost (HALO)—will launch together as a co‑manifested spacecraft.[3] Once in space, PPE will use its electric propulsion system to guide the combined stack into its operational orbit around the Moon, supporting Artemis IV astronaut missions.[3][4][5]

Beyond acting as a transport and logistics node, Gateway will:

• Host science payloads to monitor radiation and space weather, informing future Mars missions.[2][3]
• Provide a platform for technology demonstrations in deep space operations, autonomy, and long‑duration propulsion.[2][3]

In NASA’s architecture, Gateway is described as a “preliminary step” toward expanded in‑space infrastructure, enabling a permanent human presence in lunar orbit and paving the way for missions to Mars and beyond.[3][5]

What Comes Next

Following the successful power system startup:

• Teams at Lanteris will install the AEPS thrusters and Busek thrusters onto the PPE, integrating propulsion with the now‑verified power subsystem.[1][3][4]
• Redwire’s roll-out arrays will complete testing and be prepared for final integration.[1]
• NASA and industry will move toward full spacecraft-level testing ahead of the co‑manifested launch with HALO in support of Artemis IV.[3][4][5]

Each of these steps builds on the power-on milestone, moving Gateway from concept and component testing toward its role as the first long‑term human outpost in lunar orbit. With the PPE’s power system now awake and performing as expected, NASA is tangibly closer to operating a permanent infrastructure system in deep space—a cornerstone of the Artemis generation of exploration.[1][3][5]

Original source: NASA – Breaking News – NASA Starts Up Gateway’s Power System for First Time