NASA Lunar Surface Power — LunaGrid Ecosystem¶
Page created: session 52 (2026-04-06)
Summary¶
NASA's GCD program has built a remarkably complete lunar surface power ecosystem across 14 currently-active projects (confirmed April 2026) spanning generation, distribution, storage, conversion, wireless charging, dust mitigation, health monitoring, and robotic deployment. The architecture converges on a south-pole commercial power grid led by Astrobotic (LunaGrid). The critical remaining gap is long-duration energy storage — the Regenerative Fuel Cell (RFC) has been at TRL 3 since 2019 after 6+ years of GCD funding.
- Query: GCD + TX03 + Active → 14 projects (2026-04-04 snapshot)
- All projects led by Werkheiser (Program Director) / Thornblom (Program Manager) at GRC
- RFC partners confirmed: Giner Inc. (Newton MA, PEM electrolyzers) + Infinity Fuel Cell (Windsor CT, PEM fuel cells). Technical bottleneck: "fundamental thermodynamics limit the round-trip efficiency of this process to below 60%" — plus PEM system integration challenges across the lunar thermal cycling range.
Architecture Overview¶
GENERATION DISTRIBUTION STORAGE CUSTOMERS
─────────────────────────────────────────────────────────────────────
VSAT (TRL 6) → LunaGrid-Lite RFC (TRL 3-4, Artemis habitat
FSP (TRL 4→8) tether cable/reel critical gap) CLPS payloads
TRL 4→7 SIIMPLE batteries Commercial rovers
(Astrobotic) TRL unknown Science instruments
→ TYMPO km-scale CONVERSION:
TRL 2→5 (JPL) MIPS (TRL 5 ✓)
UMIC (TRL 3→4)
→ TULIPS 10kW
JPL study (2025-26) WIRELESS CHARGING:
WiBotic TRL 6 ✓
DUST MITIGATION:
Maxar (TRL 5 ✓) ELECTRONICS:
JPL (TRL 4→5, active) Rad-hard (TRL 6 ✓)
Generation¶
VSAT — Vertical Solar Array Technology¶
116305 (LaRC GCD, 2020–2024, TRL 3→5) → 184667 VSAT Astrobotic Testing (LaRC GCD, 2025–2026, TRL 6)
VSAT achieved TRL 5 under the main project (closed Dec 2024), then TRL 6 via the follow-on Astrobotic testing project. The system consists of autonomously deployable vertical masts carrying solar arrays at the lunar south pole, where arrays must be tall to catch low-angle sunlight. Description of [184667]: "Astrobotic's LunaGrid system is a groundbreaking solution designed to address the critical need for accessible, scalable, and reliable power on the Moon." 26 lunar missions planned over the next 6 years need VSAT-compatible power.
Supporting studies: - [184677] 10kW VSAT Study (LaRC, Completed 2025) — scale-up feasibility - [184660] VSAT Government Reference Design (LaRC, Completed 2025–2026, TRL 4→5)
Confidence: confirmed (TRL 6 from live TechPort record [184667])
FSP (Fission Surface Power)¶
Covered in detail in fission-surface-power.md. TRL 4→8, active through 2028. Provides 10kWe baseline for lunar outpost; designed to operate through lunar night without solar dependence.
Distribution¶
LunaGrid-Lite — Commercial Tether Demo¶
147018 | Astrobotic GCD | 2023–2028 | TRL 4→7 | 1,933 views
The flagship tether power demonstration: - Cable: 1 km reel deployed by a 6U CubeRover on an Astrobotic commercial lander - Target: 100–500 m initial demo, 1 kW transmission at high voltage - First ever: Robotic cable deployment in lunar gravity; first HV power transmission on lunar surface - Launch window: As early as 2026 - Critical technologies being advanced to TRL 7: High-voltage UMIC converter + cable + cable reel system - Heritage: UMIC converter advanced from GRC MIPS project [116399] (TRL 5, Completed) - PM: Soravud Piboontum (also PM of RFC [116307] — same person manages both tether demo and the key storage gap) - No library items as of 2026-02-13 (pre-launch)
The LunaGrid-Lite description confirms the broader Astrobotic LunaGrid commercial vision already has mature elements: landers, rovers, VSATs, wireless chargers, and physical connectors. The cable+reel+converter are the only TRL 4 gaps.
TYMPO — JPL Tethered Power Systems¶
116287 | JPL GCD | 2021–2026 | TRL 2→5 | 1,593 views
TYMPO (Tethered Power Systems for Lunar Mobility and Power Transmission) is JPL's complementary tether power project: - Range: 1 m to 10 km (much broader than LunaGrid-Lite's 100–500 m) - Power range: 100 W to 10 kW - Designed to work with both FSP and solar generation sources - Partners in KS, MA, TX (likely Kansas State, MIT, and industry) - Still Active through September 2026 - PM: Ansel Barchowsky, JPL
Relationship to LunaGrid-Lite: TYMPO appears to be NASA's internal GCD development of the underlying tether technology, while LunaGrid-Lite is Astrobotic's commercial demonstration of a subset of that capability. Both end September 2026 — likely coordinated phaseout once LunaGrid-Lite reaches flight readiness.
TULIPS — 10 kW System (JPL)¶
184666 | JPL GCD | 2025–2026 | TRL 0→0
TULIPS is a very new (May 2025) 10 kW power transmission system study. Partners in CA, FL, OH, PA, WA (Astrobotic Pittsburgh = PA). Destinations: Moon + Mars + Others. TRL 0→0 suggests this is a paper study or architecture definition phase. PM Nicolaas Verhoeven (JPL). The name suggests it follows TYMPO (2021-2026) as JPL's higher-power follow-on.
MIPS — Microgrid Interface Converter (Completed)¶
116399 | GRC GCD | 2020–2024 | TRL 3→5 | Completed
Established the evolvable, reconfigurable microgrid design and power interface standard for planetary surfaces. This is the reference design that UMIC builds on. TRL 5 means it was validated in relevant environment.
Canceled: Breakthrough Distributed Power Architecture¶
116289 | JPL GCD | 2021–2022 | TRL 3→6 | Canceled
A JPL proposal for a highly efficient (>95%), low-mass (1 kW/kg), high-density distributed power subsystem. Canceled despite targeting TRL 6. Short run (18 months). This is notable: a TRL 3→6 GCD project was canceled before completion. Possible reason: superseded by LunaGrid-Lite + TYMPO as the canonical approach, or JPL technical approach not viable.
Energy Storage¶
RFC — Regenerative Fuel Cell (GRC, Critical Gap)¶
116307 | GRC GCD | 2019–2027 | TRL 3→4 | 3,578 views | Active
The RFC is GRC's GCD flagship for lunar night energy storage: - Stores energy chemically as H2 + O2, discharges via H2/O2 fuel cell - 5-10x higher specific energy than Li-ion batteries for long-duration storage - Required for any surface asset that must survive the 14-day lunar night without FSP - After 6+ years of GCD funding (2019–2027), TRL is only 3 (target: 4) - Partners: AL, CT, MA, OH, TX — likely Teledyne Energy Systems (CT/AL), and possibly MIT (MA) - PM: Soravud Piboontum (same PM as LunaGrid-Lite) - Very high view count (3,578) suggests this is a tracked critical technology
Supporting project: - [116330] Bifurcated Reversible Alkaline Cell (pH Matter GCD, TRL 3→4, 2021–2025, Completed) — reversible fuel cell approach, same energy storage goal, commercial partner. pH Matter is a Columbus OH startup (spun from Ohio State). Ended Sep 2025. - [116338] Blue Moon Lunar Lander Fuel Cell (Blue Origin GCD, TRL 4→5, 2019–2022) — specific to Blue Moon lander, not a general RFC
Confidence: confirmed — RFC is a persistent gap. After 8 years of GCD funding, it is still TRL 3. This contrasts with the distribution and generation layers which have reached TRL 5-6. RFC structural slowness may reflect that the underlying electrochemistry (reversible operation, high cycle count, cryogenic O2 storage at the lunar surface) is genuinely hard.
SIIMPLE — Modular Batteries (GRC, Active)¶
184631 | GRC GCD | 2025–2027 | TRL unknown | Active
Developing modular, swappable batteries for rovers and habitats on Moon and Mars. The concept: a CubeRover could return to a VSAT charging station, swap a depleted battery for a fresh one. This is a complement to RFC (short-duration storage vs. RFC's long-duration storage). PM Jennifer Rock.
Power Conversion and Electronics¶
| Project | Lead | TRL | Period | Notes |
|---|---|---|---|---|
| [116399] MIPS | GRC | 3→5 | 2020–2024 | Microgrid interface standard; completed; heritage for UMIC |
| [184614] UMIC 2kW | GRC | 3→4 | 2025–2027 | Universal Modular Interface Converter, bidirectional AC/DC, high-voltage |
| [116358] Rad-hard Controller | Apogee Semi | 5→6 | 2020–2024 | Radiation-hardened switching power controller; industry partner |
| [184669] DTC Connector | JSC | 0→0 | 2025–2026 | Dust-tolerant connector, 6kW bi-directional, via Yank Technologies SBIR Phase III |
| [184615] Opt AC Study | GRC | 0→0 | 2025 | Completed study: optimal 1000 Hz AC frequency for lunar transmission |
| [184609] DYNAPOW Study | GRC | 0→0 | 2024–2026 | Dynamic power conversion study, completed |
Wireless Charging¶
[116292] Ultra Fast Proximity Charging | Astrobotic/WiBotic + Univ. of Washington | GCD | TRL 4→6 | 2021–2025 | Completed
Magnetic resonance proximity charging between a base station and CubeRover receiver. TRL 6 (operates in relevant environment). This is the last-meter delivery mechanism for LunaGrid — when a tether isn't practical, a rover pulls up to a charging station and charges wirelessly. Astrobotic, WiBotic (Seattle), and UW team.
Dust Mitigation for Solar Arrays¶
| Project | Lead | TRL | Period | Notes |
|---|---|---|---|---|
| [116295] Dust Mitigation for Flexible Arrays | Maxar | 3→5 | 2021–2023 | Electrostatic dust mitigation for VSAT-type arrays; completed |
| [184671] Solar Array Dust Removal | JPL | 4→5 | 2025–2026 | Active; InSight Mars experience motivates this (dust killed InSight power) |
| [184673] Dust Tolerant Connectors | GRC (via Yank Tech SBIR III) | 0→5 | 2025–2027 | 6kW resonant connectors, dust-tolerant |
Solar Array Health Monitoring¶
[184650] SIPS — Sensors and Instrumentation for Prognostics of Solar Arrays | GRC GCD | 2025–2027 | TRL 2→5 | 558 views
New (May 2025) GRC project developing ML-based health monitoring for solar arrays in space charging environments: - Incorporates sensors into arrays to monitor local plasma environment and inform array operation - Applies ML modeling to maximize power output without compromising safety across Lunar, GEO, HEO, and deep space charging conditions - Addresses solar array degradation under radiation and charging (which reduces effective power output — directly relevant to VSAT longevity) - Partners in AL, CA, OH (Marshall + JPL or Spectrolab + GRC) - PM: Jennifer L. Rock (GRC) — same PM as SIIMPLE [184631] modular batteries. Rock manages GRC's power storage and health portfolio.
Significance: SIPS is the health management layer for the VSAT+LunaGrid system. VSAT arrays sitting at the lunar south pole will degrade over multi-year deployment. SIPS provides the diagnostic capability to know when power generation is declining before mission impact. This is a required operational technology that the architecture diagram above doesn't show.
Robotic Power Infrastructure Deployment¶
[184664] RALB Redesign | LaRC GCD | 2025–2026 | TRL 5→5 | 545 views | Ends April 30, 2026
Robotically Assisted Lunar Base (RALB) power infrastructure deployment: - TRL 5→5: starts at TRL 5 and targets TRL 5 — this is a redesign for reliability/flight readiness, not TRL advancement - LaRC-led, PM Charles A. Taylor - Focused on the robotic assembly and connection of power cable/infrastructure on the lunar surface - TX mismatch: ML predicts TX08.2.1 (Mirror Systems) — likely triggered by VSAT mirror-mast language in description - April 30 closeout: One of the tracked April 30, 2026 closeout projects
Significance: The LunaGrid architecture requires robots to deploy the cable reel, connect VSAT masts, and make power connections on the lunar surface without human assistance. RALB is the program that matures the robotic deployment system to flight-ready status. TRL 5 out = validated in relevant environment = qualified for flight.
Supporting Analysis Projects¶
- [184647] Surface Power Model (GRC, Active 2025–2026) — MATLAB modeling for electrical power systems to inform lunar base design
- [184670] Broadcast Energy Transmission (GRC, Active 2025–2026, ends April 30) — TRL assessment of space-based solar power (SBSP) for lunar surface beaming; a study, not hardware
- [184615] Opt AC Study (GRC, Completed 2025) — determined if 1000 Hz AC is optimal for lunar power transmission
- [184609] DYNAPOW (GRC, Completed 2024–2026) — addressed Foundational Capability in Advanced Power and Thermal for STMD
Program Team¶
Almost all GCD TX03 projects share the same program management team: - Mary J. Werkheiser — Program Director (GCD) - Mark N. Thornblom — Program Manager (GCD)
This means the entire LunaGrid ecosystem is governed by a single Werkheiser/Thornblom team at GRC. The same team also runs BLiSS [157839], SMARTS [116383], and most other GCD projects. This tight coordination explains the cross-project architecture coherence.
Key Findings¶
1. VSAT reached TRL 6 (not just TRL 5). The original VSAT project [116305] shows TRL 5, but the follow-on Astrobotic Testing project [184667] records TRL 6 as current. The Astrobotic testing phase pushed VSAT past TRL 5. This is an underreported success.
2. RFC is the single structural gap. Every other element of the LunaGrid ecosystem has reached TRL 5-6. The RFC — essential for surviving lunar night on small commercial platforms — is still TRL 3 after 6 years. FSP covers large crewed outposts; RFC is for smaller commercial assets. Without RFC, commercial assets must either use FSP power (dependent on the NASA base) or carry primary batteries (limiting lifetime). Battery swapping (SIIMPLE) is an engineering workaround, not a solution.
3. TULIPS + TYMPO = JPL's parallel tether program. TYMPO (2021-2026, 100W-10kW, TRL 2→5) and TULIPS (2025-2026, 10kW, study) run in parallel with LunaGrid-Lite. JPL is the government technology developer; Astrobotic is the commercial deployer. This is a textbook government-industry technology transfer structure.
4. LunaGrid commercial launch window is 2026. LunaGrid-Lite targets a 2026 launch on an Astrobotic commercial lander (CP-14 or later). If this launches, it would be the first high-voltage power transmission on the lunar surface and the first commercial power grid demo. Timeline is tight given LunaGrid-Lite is still TRL 4 (as of Feb 2026).
5. System is architecturally complete except for tether and RFC. The LunaGrid commercial power system already has: landers, rovers, VSAT (TRL 6), wireless charging (TRL 6), physical connectors, rad-hard electronics (TRL 6), dust mitigation (TRL 5), microgrid interface (TRL 5). What remains is cable+reel+converter (TRL 4→7, LunaGrid-Lite) and long-duration night storage (RFC, TRL 3).
STRG Academic Research Layer (TRL 2–3)¶
The 2025 STRG 183xxx cohort funded 4 academic projects (TRL 2→3, 2025–2028) that address PSR power gaps not covered by the GCD engineering programs above. All share the same Deans/Nguyen program contacts as the TX01 propulsion track of the same cohort.
| Project | Lead | Technology | GCD gap addressed |
|---|---|---|---|
| 183693 Deployable Solar Reflectors | Stanford/JPL (Arya) | Modular mirrors on crater rims → redirect sunlight into PSR | Complements VSAT; enables direct solar input to PSR |
| 183685 Oxychalcogenide Superconducting Cable | U. Chicago (Yang) | HTS materials for zero-ohmic-loss PSR power cable | No GCD equivalent; LunaGrid-Lite uses conventional HV cable |
| 183700 Piezoelectric Power Converters | UC Berkeley (Boles) | Radiation-hard cryo-native power electronics (~40K) | Fills gap below GCD rad-hard controller [116358] |
| 183711 Adsorbent SOFC Fuel Storage | CSM (Mcguirk) | Adsorption materials replace cryogenic O₂/CH₄ tanks for fuel cells | Alternative to RFC [116307]; different chemistry approach |
Key observation: The adsorbent fuel storage project ([183711]) is an alternative research track for the RFC energy storage gap. The RFC has been at TRL 3 after 6 years; the adsorbent approach targets a different physical mechanism (sorption vs. electrochemistry) that might bypass the RFC bottleneck if proven at TRL 3 by 2028.
Full detail at: topics/psr-power-strg.md
Open Threads¶
- LunaGrid-Lite launch: Does it make 2026? Astrobotic's Peregrine mission failed. CP-14 (Griffin) is next. Track whether the 2026 launch window holds.
- RFC structural gap: Why is RFC still TRL 3 after 6 years? Read any documents from [116307] — are there fundamental technical blockers or is this a resource/priority issue?
- TULIPS scope: Is TULIPS a new JPL power architecture or an extension of TYMPO? Both end Sep 2026 — what happens after?
- SMARTS SMA radiator → LunaGrid: SMARTS reached TRL 6 with Paragon+GRC. Is this being considered as the thermal management layer for VSAT or RFC installations?
Cross-references: gcd-active-portfolio.md, fission-surface-power.md, organizations/astrobotic.md, organizations/paragon.md (SMARTS radiator connection)