Unlocking space missions on the Moon, Mars and Beyond
Designed for the modern space era, Zeno’s nuclear batteries provide the heat and electricity needed to survive extreme cold and darkness, enabling long-duration missions through the lunar night, in permanently shadowed regions, on Mars, and across deep space.
Opening the deep sea and seabed
Underwater infrastructure, from sensors to subsea communications cables, requires power that can endure high pressure and cold water temperatures in the depths of our oceans. Zeno’s nuclear batteries deliver long-duration power, ensuring persistent operation for critical maritime systems.
OUR technology
We are building nuclear batteries
Zeno’s nuclear batteries (also known as radioisotope power systems) use radioactive isotopes such as strontium-90 and americium-241 as fuel. As these materials naturally decay, they emit heat that can be used directly or converted into electricity using thermoelectric generators or a Stirling engine.
Governments have used nuclear batteries for decades to power critical missions from the deep sea to interstellar space – now, Zeno is bringing this technology to the commercial market.
Scalable
Generates 1 – 100s watts of power
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Sustainable
Nuclear waste material recycled into fuel
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Reliable
Runs continuously for 5+ years, in any environment
Innovative
Compact power system with patented design
OUR PRODUCTS
Three systems engineered for any mission profile
radioisotope stirling generator
RSG
radioisotope stirling generator
RSG
System Specs
Constructed from durable materials to house and protect the power system in extreme conditions; highly customizable design based on space or terrestrial application.
Heat from the radioisotope heat sources drives a piston back and forth inside a sealed Stirling engine. That motion powers a generator to produce electricity, significantly increasing power efficiency.
Designed with a novel fuel and shielding system to deliver high specific power from strontium-90 or americium-241.
System Specs
Power Output
15 - 100s Watts electric
Planned Lifespan
5+ years
Energy Conversion
Stirling engine
Radioisotope Fuel
Sr-90 or Am-241
status
Development
Q1 ’ 24
Launch
Q4 ’ 28
Radioisotope Thermoelectric Generator
RTG
Radioisotope Thermoelectric Generator
RTG
FEATURES
Constructed from durable materials to house and protect the power system in extreme conditions; highly customizable design based on space or terrestrial application.
Heat from the radioisotope creates a temperature difference across solid-state materials in the thermoelectric generator, producing electricity directly – no moving parts required.
Designed with a novel fuel and shielding system to deliver high specific power from strontium-90 or americium-241.
System Specs
Power Output
1 - 100s Watts electric
Planned Lifespan
5+ years
Energy Conversion
Thermoelectrics
Radioisotope Fuel
Sr-90 or Am-241
status
Development
Q1 ’ 24
Launch
Q4 ’ 28
radioisotope Heater unit
RHU
radioisotope Heater unit
RHU
FEATURES
Constructed from durable materials and designed to interface with instruments, components and systems.
Superalloys contain the nuclear fuel and shield particle emissions.
Designed with a novel fuel and shielding system to deliver high specific power from americium-241.
System Specs
Power Output
<10 Watts thermal
Planned Lifespan
5+ years
Heat Transfer
Conduction
Radioisotope Fuel
Am-241
status
Development
Q1 ’ 24
Launch
Q4 ’ 28