Technology · Nuclear energy and propulsion

Radioisotope and Betavoltaic Power

Power sources that convert the decay heat or radiation of isotopes such as plutonium-238 into electricity, from spacecraft RTGs to long-life betavoltaic batteries.

FieldedPart of Nuclear propulsion and space power

Inputs

0 high or critical

Builders

Organizations working on it

Maturity

Fielded

Field-wide rating

Sources

Behind these records

Who Builds It3

Fielded0
- —
Limited fielding1
- City LabsDeveloper
Prototype0
- —
Development2
- Deep Space EnergyDeveloper
- Perpetual AtomicsDeveloper
Research0
- —
Concept0
- —

Sort

Organizations working on this technology. Select a sortable column heading to sort.
				Notes	Conf.
City LabsUS	Startup	Developer	Limited fielding	NanoTritium P100 betavoltaics sold under an NRC general license; BOHR betavoltaic demo satellite launched 2026.	Reported
Deep Space EnergyLV	Startup	Developer	Development	—	Reported
Perpetual AtomicsGB	Startup	Developer	Development	—	Reported

Placed by each organization's own maturity for this technology; TRL is self-reported or estimated, see confidence.

Systems4

Radioisotope and betavoltaic power: systems. Select a sortable column heading to sort.

BOHR	City Labs	Spacecraft	—	—
P100	City Labs	Component	—	—
P200	City Labs	Component	—	—
Radioisotope Thermo-Acoustic Linear Induction Generator (RTALIG)	Deep Space Energy	Component	—	—